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The GNU C Library | www.imodulo.com · 2003-04-05 | |
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This appendix is a complete list of the facilities declared within the header files supplied with the GNU C library. Each entry also lists the standard or other source from which each facility is derived, and tells you where in the manual you can find more information about how to use it.
long int a64l (const char *string) stdlib.h (XPG): Encode Binary Data.
void abort (void) stdlib.h (ISO): Aborting a Program.
int abs (int number) stdlib.h (ISO): Absolute Value.
int accept (int socket, struct sockaddr *addr, socklen_t *length_ptr) sys/socket.h (BSD): Accepting Connections.
int access (const char *filename, int how) unistd.h (POSIX.1): Testing File Access.
ACCOUNTING utmp.h (SVID): Manipulating the Database.
double acos (double x) math.h (ISO): Inverse Trig Functions.
float acosf (float x) math.h (ISO): Inverse Trig Functions.
double acosh (double x) math.h (ISO): Hyperbolic Functions.
float acoshf (float x) math.h (ISO): Hyperbolic Functions.
long double acoshl (long double x) math.h (ISO): Hyperbolic Functions.
long double acosl (long double x) math.h (ISO): Inverse Trig Functions.
int addmntent (FILE *stream, const struct mntent *mnt) mntent.h (BSD): mtab.
int adjtime (const struct timeval *delta, struct timeval *olddelta) sys/time.h (BSD): High-Resolution Calendar.
int adjtimex (struct timex *timex) sys/timex.h (GNU): High-Resolution Calendar.
AF_FILE sys/socket.h (GNU): Address Formats.
AF_INET sys/socket.h (BSD): Address Formats.
AF_INET6 sys/socket.h (IPv6 Basic API): Address Formats.
AF_LOCAL sys/socket.h (POSIX): Address Formats.
AF_UNIX sys/socket.h (BSD, Unix98): Address Formats.
AF_UNSPEC sys/socket.h (BSD): Address Formats.
int aio_cancel (int fildes, struct aiocb *aiocbp) aio.h (POSIX.1b): Cancel AIO Operations.
int aio_cancel64 (int fildes, struct aiocb64 *aiocbp) aio.h (Unix98): Cancel AIO Operations.
int aio_error (const struct aiocb *aiocbp) aio.h (POSIX.1b): Status of AIO Operations.
int aio_error64 (const struct aiocb64 *aiocbp) aio.h (Unix98): Status of AIO Operations.
int aio_fsync (int op, struct aiocb *aiocbp) aio.h (POSIX.1b): Synchronizing AIO Operations.
int aio_fsync64 (int op, struct aiocb64 *aiocbp) aio.h (Unix98): Synchronizing AIO Operations.
void aio_init (const struct aioinit *init) aio.h (GNU): Configuration of AIO.
int aio_read (struct aiocb *aiocbp) aio.h (POSIX.1b): Asynchronous Reads/Writes.
int aio_read64 (struct aiocb *aiocbp) aio.h (Unix98): Asynchronous Reads/Writes.
ssize_t aio_return (const struct aiocb *aiocbp) aio.h (POSIX.1b): Status of AIO Operations.
int aio_return64 (const struct aiocb64 *aiocbp) aio.h (Unix98): Status of AIO Operations.
int aio_suspend (const struct aiocb *const list[], int nent, const struct timespec *timeout) aio.h (POSIX.1b): Synchronizing AIO Operations.
int aio_suspend64 (const struct aiocb64 *const list[], int nent, const struct timespec *timeout) aio.h (Unix98): Synchronizing AIO Operations.
int aio_write (struct aiocb *aiocbp) aio.h (POSIX.1b): Asynchronous Reads/Writes.
int aio_write64 (struct aiocb *aiocbp) aio.h (Unix98): Asynchronous Reads/Writes.
unsigned int alarm (unsigned int seconds) unistd.h (POSIX.1): Setting an Alarm.
void * alloca (size_t size); stdlib.h (GNU, BSD): Variable Size Automatic.
int alphasort (const void *a, const void *b) dirent.h (BSD/SVID): Scanning Directory Content.
int alphasort64 (const void *a, const void *b) dirent.h (GNU): Scanning Directory Content.
tcflag_t ALTWERASE termios.h (BSD): Local Modes.
int ARG_MAX limits.h (POSIX.1): General Limits.
error_t argp_err_exit_status argp.h (GNU): Argp Global Variables.
void argp_error (const struct argp_state *state, const char *fmt, ...) argp.h (GNU): Argp Helper Functions.
int ARGP_ERR_UNKNOWN argp.h (GNU): Argp Parser Functions.
void argp_failure (const struct argp_state *state, int status, int errnum, const char *fmt, ...) argp.h (GNU): Argp Helper Functions.
void argp_help (const struct argp *argp, FILE *stream, unsigned flags, char *name) argp.h (GNU): Argp Help.
ARGP_IN_ORDER argp.h (GNU): Argp Flags.
ARGP_KEY_ARG argp.h (GNU): Argp Special Keys.
ARGP_KEY_ARGS argp.h (GNU): Argp Special Keys.
ARGP_KEY_END argp.h (GNU): Argp Special Keys.
ARGP_KEY_ERROR argp.h (GNU): Argp Special Keys.
ARGP_KEY_FINI argp.h (GNU): Argp Special Keys.
ARGP_KEY_HELP_ARGS_DOC argp.h (GNU): Argp Help Filter Keys.
ARGP_KEY_HELP_DUP_ARGS_NOTE argp.h (GNU): Argp Help Filter Keys.
ARGP_KEY_HELP_EXTRA argp.h (GNU): Argp Help Filter Keys.
ARGP_KEY_HELP_HEADER argp.h (GNU): Argp Help Filter Keys.
ARGP_KEY_HELP_POST_DOC argp.h (GNU): Argp Help Filter Keys.
ARGP_KEY_HELP_PRE_DOC argp.h (GNU): Argp Help Filter Keys.
ARGP_KEY_INIT argp.h (GNU): Argp Special Keys.
ARGP_KEY_NO_ARGS argp.h (GNU): Argp Special Keys.
ARGP_KEY_SUCCESS argp.h (GNU): Argp Special Keys.
ARGP_LONG_ONLY argp.h (GNU): Argp Flags.
ARGP_NO_ARGS argp.h (GNU): Argp Flags.
ARGP_NO_ERRS argp.h (GNU): Argp Flags.
ARGP_NO_EXIT argp.h (GNU): Argp Flags.
ARGP_NO_HELP argp.h (GNU): Argp Flags.
error_t argp_parse (const struct argp *argp, int argc, char **argv, unsigned flags, int *arg_index, void *input) argp.h (GNU): Argp.
ARGP_PARSE_ARGV0 argp.h (GNU): Argp Flags.
const char * argp_program_bug_address argp.h (GNU): Argp Global Variables.
const char * argp_program_version argp.h (GNU): Argp Global Variables.
argp_program_version_hook argp.h (GNU): Argp Global Variables.
ARGP_SILENT argp.h (GNU): Argp Flags.
void argp_state_help (const struct argp_state *state, FILE *stream, unsigned flags) argp.h (GNU): Argp Helper Functions.
void argp_usage (const struct argp_state *state) argp.h (GNU): Argp Helper Functions.
error_t argz_add (char **argz, size_t *argz_len, const char *str) argz.h (GNU): Argz Functions.
error_t argz_add_sep (char **argz, size_t *argz_len, const char *str, int delim) argz.h (GNU): Argz Functions.
error_t argz_append (char **argz, size_t *argz_len, const char *buf, size_t buf_len) argz.h (GNU): Argz Functions.
size_t argz_count (const char *argz, size_t arg_len) argz.h (GNU): Argz Functions.
error_t argz_create (char *const argv[], char **argz, size_t *argz_len) argz.h (GNU): Argz Functions.
error_t argz_create_sep (const char *string, int sep, char **argz, size_t *argz_len) argz.h (GNU): Argz Functions.
error_t argz_delete (char **argz, size_t *argz_len, char *entry) argz.h (GNU): Argz Functions.
void argz_extract (char *argz, size_t argz_len, char **argv) argz.h (GNU): Argz Functions.
error_t argz_insert (char **argz, size_t *argz_len, char *before, const char *entry) argz.h (GNU): Argz Functions.
char * argz_next (char *argz, size_t argz_len, const char *entry) argz.h (GNU): Argz Functions.
error_t argz_replace (char **argz, size_t *argz_len, const char *str, const char *with, unsigned *replace_count) argz.h (GNU): Argz Functions.
void argz_stringify (char *argz, size_t len, int sep) argz.h (GNU): Argz Functions.
char * asctime (const struct tm *brokentime) time.h (ISO): Formatting Calendar Time.
char * asctime_r (const struct tm *brokentime, char *buffer) time.h (POSIX.1c): Formatting Calendar Time.
double asin (double x) math.h (ISO): Inverse Trig Functions.
float asinf (float x) math.h (ISO): Inverse Trig Functions.
double asinh (double x) math.h (ISO): Hyperbolic Functions.
float asinhf (float x) math.h (ISO): Hyperbolic Functions.
long double asinhl (long double x) math.h (ISO): Hyperbolic Functions.
long double asinl (long double x) math.h (ISO): Inverse Trig Functions.
int asprintf (char **ptr, const char *template, ...) stdio.h (GNU): Dynamic Output.
void assert (int expression) assert.h (ISO): Consistency Checking.
void assert_perror (int errnum) assert.h (GNU): Consistency Checking.
double atan (double x) math.h (ISO): Inverse Trig Functions.
double atan2 (double y, double x) math.h (ISO): Inverse Trig Functions.
float atan2f (float y, float x) math.h (ISO): Inverse Trig Functions.
long double atan2l (long double y, long double x) math.h (ISO): Inverse Trig Functions.
float atanf (float x) math.h (ISO): Inverse Trig Functions.
double atanh (double x) math.h (ISO): Hyperbolic Functions.
float atanhf (float x) math.h (ISO): Hyperbolic Functions.
long double atanhl (long double x) math.h (ISO): Hyperbolic Functions.
long double atanl (long double x) math.h (ISO): Inverse Trig Functions.
int atexit (void (*function) (void)) stdlib.h (ISO): Cleanups on Exit.
double atof (const char *string) stdlib.h (ISO): Parsing of Floats.
int atoi (const char *string) stdlib.h (ISO): Parsing of Integers.
long int atol (const char *string) stdlib.h (ISO): Parsing of Integers.
long long int atoll (const char *string) stdlib.h (ISO): Parsing of Integers.
B0 termios.h (POSIX.1): Line Speed.
B110 termios.h (POSIX.1): Line Speed.
B115200 termios.h (GNU): Line Speed.
B1200 termios.h (POSIX.1): Line Speed.
B134 termios.h (POSIX.1): Line Speed.
B150 termios.h (POSIX.1): Line Speed.
B1800 termios.h (POSIX.1): Line Speed.
B19200 termios.h (POSIX.1): Line Speed.
B200 termios.h (POSIX.1): Line Speed.
B230400 termios.h (GNU): Line Speed.
B2400 termios.h (POSIX.1): Line Speed.
B300 termios.h (POSIX.1): Line Speed.
B38400 termios.h (POSIX.1): Line Speed.
B460800 termios.h (GNU): Line Speed.
B4800 termios.h (POSIX.1): Line Speed.
B50 termios.h (POSIX.1): Line Speed.
B57600 termios.h (GNU): Line Speed.
B600 termios.h (POSIX.1): Line Speed.
B75 termios.h (POSIX.1): Line Speed.
B9600 termios.h (POSIX.1): Line Speed.
int backtrace (void **buffer, int size) execinfo.h (GNU): Backtraces.
char ** backtrace_symbols (void *const *buffer, int size) execinfo.h (GNU): Backtraces.
void backtrace_symbols_fd (void *const *buffer, int size, int fd) execinfo.h (GNU): Backtraces.
char * basename (char *path) libgen.h (XPG): Finding Tokens in a String.
char * basename (const char *filename) string.h (GNU): Finding Tokens in a String.
int BC_BASE_MAX limits.h (POSIX.2): Utility Limits.
int BC_DIM_MAX limits.h (POSIX.2): Utility Limits.
int bcmp (const void *a1, const void *a2, size_t size) string.h (BSD): String/Array Comparison.
void bcopy (const void *from, void *to, size_t size) string.h (BSD): Copying and Concatenation.
int BC_SCALE_MAX limits.h (POSIX.2): Utility Limits.
int BC_STRING_MAX limits.h (POSIX.2): Utility Limits.
int bind (int socket, struct sockaddr *addr, socklen_t length) sys/socket.h (BSD): Setting Address.
char * bindtextdomain (const char *domainname, const char *dirname) libintl.h (GNU): Locating gettext catalog.
char * bind_textdomain_codeset (const char *domainname, const char *codeset) libintl.h (GNU): Charset conversion in gettext.
blkcnt64_t sys/types.h (Unix98): Attribute Meanings.
blkcnt_t sys/types.h (Unix98): Attribute Meanings.
BOOT_TIME utmp.h (SVID): Manipulating the Database.
BOOT_TIME utmpx.h (XPG4.2): XPG Functions.
int brk (void *addr) unistd.h (BSD): Resizing the Data Segment.
tcflag_t BRKINT termios.h (POSIX.1): Input Modes.
_BSD_SOURCE(GNU): Feature Test Macros.
void * bsearch (const void *key, const void *array, size_t count, size_t size, comparison_fn_t compare) stdlib.h (ISO): Array Search Function.
wint_t btowc (int c) wchar.h (ISO): Converting a Character.
int BUFSIZ stdio.h (ISO): Controlling Buffering.
void bzero (void *block, size_t size) string.h (BSD): Copying and Concatenation.
double cabs (complex double z) complex.h (ISO): Absolute Value.
float cabsf (complex float z) complex.h (ISO): Absolute Value.
long double cabsl (complex long double z) complex.h (ISO): Absolute Value.
complex double cacos (complex double z) complex.h (ISO): Inverse Trig Functions.
complex float cacosf (complex float z) complex.h (ISO): Inverse Trig Functions.
complex double cacosh (complex double z) complex.h (ISO): Hyperbolic Functions.
complex float cacoshf (complex float z) complex.h (ISO): Hyperbolic Functions.
complex long double cacoshl (complex long double z) complex.h (ISO): Hyperbolic Functions.
complex long double cacosl (complex long double z) complex.h (ISO): Inverse Trig Functions.
void * calloc (size_t count, size_t eltsize) malloc.h, stdlib.h (ISO): Allocating Cleared Space.
char * canonicalize_file_name (const char *name) stdlib.h (GNU): Symbolic Links.
double carg (complex double z) complex.h (ISO): Operations on Complex.
float cargf (complex float z) complex.h (ISO): Operations on Complex.
long double cargl (complex long double z) complex.h (ISO): Operations on Complex.
complex double casin (complex double z) complex.h (ISO): Inverse Trig Functions.
complex float casinf (complex float z) complex.h (ISO): Inverse Trig Functions.
complex double casinh (complex double z) complex.h (ISO): Hyperbolic Functions.
complex float casinhf (complex float z) complex.h (ISO): Hyperbolic Functions.
complex long double casinhl (complex long double z) complex.h (ISO): Hyperbolic Functions.
complex long double casinl (complex long double z) complex.h (ISO): Inverse Trig Functions.
complex double catan (complex double z) complex.h (ISO): Inverse Trig Functions.
complex float catanf (complex float z) complex.h (ISO): Inverse Trig Functions.
complex double catanh (complex double z) complex.h (ISO): Hyperbolic Functions.
complex float catanhf (complex float z) complex.h (ISO): Hyperbolic Functions.
complex long double catanhl (complex long double z) complex.h (ISO): Hyperbolic Functions.
complex long double catanl (complex long double z) complex.h (ISO): Inverse Trig Functions.
nl_catd catopen (const char *cat_name, int flag) nl_types.h (X/Open): The catgets Functions.
int cbc_crypt (char *key, char *blocks, unsigned len, unsigned mode, char *ivec) rpc/des_crypt.h (SUNRPC): DES Encryption.
double cbrt (double x) math.h (BSD): Exponents and Logarithms.
float cbrtf (float x) math.h (BSD): Exponents and Logarithms.
long double cbrtl (long double x) math.h (BSD): Exponents and Logarithms.
complex double ccos (complex double z) complex.h (ISO): Trig Functions.
complex float ccosf (complex float z) complex.h (ISO): Trig Functions.
complex double ccosh (complex double z) complex.h (ISO): Hyperbolic Functions.
complex float ccoshf (complex float z) complex.h (ISO): Hyperbolic Functions.
complex long double ccoshl (complex long double z) complex.h (ISO): Hyperbolic Functions.
complex long double ccosl (complex long double z) complex.h (ISO): Trig Functions.
cc_t termios.h (POSIX.1): Mode Data Types.
tcflag_t CCTS_OFLOW termios.h (BSD): Control Modes.
double ceil (double x) math.h (ISO): Rounding Functions.
float ceilf (float x) math.h (ISO): Rounding Functions.
long double ceill (long double x) math.h (ISO): Rounding Functions.
complex double cexp (complex double z) complex.h (ISO): Exponents and Logarithms.
complex float cexpf (complex float z) complex.h (ISO): Exponents and Logarithms.
complex long double cexpl (complex long double z) complex.h (ISO): Exponents and Logarithms.
speed_t cfgetispeed (const struct termios *termios-p) termios.h (POSIX.1): Line Speed.
speed_t cfgetospeed (const struct termios *termios-p) termios.h (POSIX.1): Line Speed.
void cfmakeraw (struct termios *termios-p) termios.h (BSD): Noncanonical Input.
void cfree (void *ptr) stdlib.h (Sun): Freeing after Malloc.
int cfsetispeed (struct termios *termios-p, speed_t speed) termios.h (POSIX.1): Line Speed.
int cfsetospeed (struct termios *termios-p, speed_t speed) termios.h (POSIX.1): Line Speed.
int cfsetspeed (struct termios *termios-p, speed_t speed) termios.h (BSD): Line Speed.
CHAR_BIT limits.h (ISO): Width of Type.
CHAR_MAX limits.h (ISO): Range of Type.
CHAR_MIN limits.h (ISO): Range of Type.
int chdir (const char *filename) unistd.h (POSIX.1): Working Directory.
int CHILD_MAX limits.h (POSIX.1): General Limits.
int chmod (const char *filename, mode_t mode) sys/stat.h (POSIX.1): Setting Permissions.
int chown (const char *filename, uid_t owner, gid_t group) unistd.h (POSIX.1): File Owner.
tcflag_t CIGNORE termios.h (BSD): Control Modes.
double cimag (complex double z) complex.h (ISO): Operations on Complex.
float cimagf (complex float z) complex.h (ISO): Operations on Complex.
long double cimagl (complex long double z) complex.h (ISO): Operations on Complex.
int clearenv (void) stdlib.h (GNU): Environment Access.
void clearerr (FILE *stream) stdio.h (ISO): Error Recovery.
void clearerr_unlocked (FILE *stream) stdio.h (GNU): Error Recovery.
int CLK_TCK time.h (POSIX.1): CPU Time.
tcflag_t CLOCAL termios.h (POSIX.1): Control Modes.
clock_t clock (void) time.h (ISO): CPU Time.
int CLOCKS_PER_SEC time.h (ISO): CPU Time.
clock_t time.h (ISO): CPU Time.
complex double clog (complex double z) complex.h (ISO): Exponents and Logarithms.
complex double clog10 (complex double z) complex.h (GNU): Exponents and Logarithms.
complex float clog10f (complex float z) complex.h (GNU): Exponents and Logarithms.
complex long double clog10l (complex long double z) complex.h (GNU): Exponents and Logarithms.
complex float clogf (complex float z) complex.h (ISO): Exponents and Logarithms.
complex long double clogl (complex long double z) complex.h (ISO): Exponents and Logarithms.
int close (int filedes) unistd.h (POSIX.1): Opening and Closing Files.
int closedir (DIR *dirstream) dirent.h (POSIX.1): Reading/Closing Directory.
void closelog (void) syslog.h (BSD): closelog.
int COLL_WEIGHTS_MAX limits.h (POSIX.2): Utility Limits.
size_t confstr (int parameter, char *buf, size_t len) unistd.h (POSIX.2): String Parameters.
complex double conj (complex double z) complex.h (ISO): Operations on Complex.
complex float conjf (complex float z) complex.h (ISO): Operations on Complex.
complex long double conjl (complex long double z) complex.h (ISO): Operations on Complex.
int connect (int socket, struct sockaddr *addr, socklen_t length) sys/socket.h (BSD): Connecting.
cookie_close_function stdio.h (GNU): Hook Functions.
cookie_io_functions_t stdio.h (GNU): Streams and Cookies.
cookie_read_function stdio.h (GNU): Hook Functions.
cookie_seek_function stdio.h (GNU): Hook Functions.
cookie_write_function stdio.h (GNU): Hook Functions.
double copysign (double x, double y) math.h (ISO): FP Bit Twiddling.
float copysignf (float x, float y) math.h (ISO): FP Bit Twiddling.
long double copysignl (long double x, long double y) math.h (ISO): FP Bit Twiddling.
double cos (double x) math.h (ISO): Trig Functions.
float cosf (float x) math.h (ISO): Trig Functions.
double cosh (double x) math.h (ISO): Hyperbolic Functions.
float coshf (float x) math.h (ISO): Hyperbolic Functions.
long double coshl (long double x) math.h (ISO): Hyperbolic Functions.
long double cosl (long double x) math.h (ISO): Trig Functions.
complex double cpow (complex double base, complex double power) complex.h (ISO): Exponents and Logarithms.
complex float cpowf (complex float base, complex float power) complex.h (ISO): Exponents and Logarithms.
complex long double cpowl (complex long double base, complex long double power) complex.h (ISO): Exponents and Logarithms.
complex double cproj (complex double z) complex.h (ISO): Operations on Complex.
complex float cprojf (complex float z) complex.h (ISO): Operations on Complex.
complex long double cprojl (complex long double z) complex.h (ISO): Operations on Complex.
tcflag_t CREAD termios.h (POSIX.1): Control Modes.
double creal (complex double z) complex.h (ISO): Operations on Complex.
float crealf (complex float z) complex.h (ISO): Operations on Complex.
long double creall (complex long double z) complex.h (ISO): Operations on Complex.
int creat (const char *filename, mode_t mode) fcntl.h (POSIX.1): Opening and Closing Files.
int creat64 (const char *filename, mode_t mode) fcntl.h (Unix98): Opening and Closing Files.
tcflag_t CRTS_IFLOW termios.h (BSD): Control Modes.
char * crypt (const char *key, const char *salt) crypt.h (BSD, SVID): crypt.
char * crypt_r (const char *key, const char *salt, struct crypt_data * data) crypt.h (GNU): crypt.
tcflag_t CS5 termios.h (POSIX.1): Control Modes.
tcflag_t CS6 termios.h (POSIX.1): Control Modes.
tcflag_t CS7 termios.h (POSIX.1): Control Modes.
tcflag_t CS8 termios.h (POSIX.1): Control Modes.
complex double csin (complex double z) complex.h (ISO): Trig Functions.
complex float csinf (complex float z) complex.h (ISO): Trig Functions.
complex double csinh (complex double z) complex.h (ISO): Hyperbolic Functions.
complex float csinhf (complex float z) complex.h (ISO): Hyperbolic Functions.
complex long double csinhl (complex long double z) complex.h (ISO): Hyperbolic Functions.
complex long double csinl (complex long double z) complex.h (ISO): Trig Functions.
tcflag_t CSIZE termios.h (POSIX.1): Control Modes.
_CS_LFS64_CFLAGS unistd.h (Unix98): String Parameters.
_CS_LFS64_LDFLAGS unistd.h (Unix98): String Parameters.
_CS_LFS64_LIBS unistd.h (Unix98): String Parameters.
_CS_LFS64_LINTFLAGS unistd.h (Unix98): String Parameters.
_CS_LFS_CFLAGS unistd.h (Unix98): String Parameters.
_CS_LFS_LDFLAGS unistd.h (Unix98): String Parameters.
_CS_LFS_LIBS unistd.h (Unix98): String Parameters.
_CS_LFS_LINTFLAGS unistd.h (Unix98): String Parameters.
_CS_PATH unistd.h (POSIX.2): String Parameters.
complex double csqrt (complex double z) complex.h (ISO): Exponents and Logarithms.
complex float csqrtf (complex float z) complex.h (ISO): Exponents and Logarithms.
complex long double csqrtl (complex long double z) complex.h (ISO): Exponents and Logarithms.
tcflag_t CSTOPB termios.h (POSIX.1): Control Modes.
complex double ctan (complex double z) complex.h (ISO): Trig Functions.
complex float ctanf (complex float z) complex.h (ISO): Trig Functions.
complex double ctanh (complex double z) complex.h (ISO): Hyperbolic Functions.
complex float ctanhf (complex float z) complex.h (ISO): Hyperbolic Functions.
complex long double ctanhl (complex long double z) complex.h (ISO): Hyperbolic Functions.
complex long double ctanl (complex long double z) complex.h (ISO): Trig Functions.
char * ctermid (char *string) stdio.h (POSIX.1): Identifying the Terminal.
char * ctime (const time_t *time) time.h (ISO): Formatting Calendar Time.
char * ctime_r (const time_t *time, char *buffer) time.h (POSIX.1c): Formatting Calendar Time.
char * cuserid (char *string) stdio.h (POSIX.1): Who Logged In.
int daylight time.h (SVID): Time Zone Functions.
DBL_DIG float.h (ISO): Floating Point Parameters.
DBL_EPSILON float.h (ISO): Floating Point Parameters.
DBL_MANT_DIG float.h (ISO): Floating Point Parameters.
DBL_MAX float.h (ISO): Floating Point Parameters.
DBL_MAX_10_EXP float.h (ISO): Floating Point Parameters.
DBL_MAX_EXP float.h (ISO): Floating Point Parameters.
DBL_MIN float.h (ISO): Floating Point Parameters.
DBL_MIN_10_EXP float.h (ISO): Floating Point Parameters.
DBL_MIN_EXP float.h (ISO): Floating Point Parameters.
char * dcgettext (const char *domainname, const char *msgid, int category) libintl.h (GNU): Translation with gettext.
char * dcngettext (const char *domain, const char *msgid1, const char *msgid2, unsigned long int n, int category) libintl.h (GNU): Advanced gettext functions.
DEAD_PROCESS utmp.h (SVID): Manipulating the Database.
DEAD_PROCESS utmpx.h (XPG4.2): XPG Functions.
DES_DECRYPT rpc/des_crypt.h (SUNRPC): DES Encryption.
DES_ENCRYPT rpc/des_crypt.h (SUNRPC): DES Encryption.
DESERR_BADPARAM rpc/des_crypt.h (SUNRPC): DES Encryption.
DESERR_HWERROR rpc/des_crypt.h (SUNRPC): DES Encryption.
DESERR_NOHWDEVICE rpc/des_crypt.h (SUNRPC): DES Encryption.
DESERR_NONE rpc/des_crypt.h (SUNRPC): DES Encryption.
int DES_FAILED (int err) rpc/des_crypt.h (SUNRPC): DES Encryption.
DES_HW rpc/des_crypt.h (SUNRPC): DES Encryption.
void des_setparity (char *key) rpc/des_crypt.h (SUNRPC): DES Encryption.
DES_SW rpc/des_crypt.h (SUNRPC): DES Encryption.
dev_t sys/types.h (POSIX.1): Attribute Meanings.
char * dgettext (const char *domainname, const char *msgid) libintl.h (GNU): Translation with gettext.
double difftime (time_t time1, time_t time0) time.h (ISO): Elapsed Time.
DIR dirent.h (POSIX.1): Opening a Directory.
int dirfd (DIR *dirstream) dirent.h (GNU): Opening a Directory.
char * dirname (char *path) libgen.h (XPG): Finding Tokens in a String.
div_t div (int numerator, int denominator) stdlib.h (ISO): Integer Division.
div_t stdlib.h (ISO): Integer Division.
char * dngettext (const char *domain, const char *msgid1, const char *msgid2, unsigned long int n) libintl.h (GNU): Advanced gettext functions.
double drand48 (void) stdlib.h (SVID): SVID Random.
int drand48_r (struct drand48_data *buffer, double *result) stdlib.h (GNU): SVID Random.
double drem (double numerator, double denominator) math.h (BSD): Remainder Functions.
float dremf (float numerator, float denominator) math.h (BSD): Remainder Functions.
long double dreml (long double numerator, long double denominator) math.h (BSD): Remainder Functions.
mode_t DTTOIF (int dtype) dirent.h (BSD): Directory Entries.
int dup (int old) unistd.h (POSIX.1): Duplicating Descriptors.
int dup2 (int old, int new) unistd.h (POSIX.1): Duplicating Descriptors.
int E2BIG errno.h (POSIX.1: Argument list too long): Error Codes.
int EACCES errno.h (POSIX.1: Permission denied): Error Codes.
int EADDRINUSE errno.h (BSD: Address already in use): Error Codes.
int EADDRNOTAVAIL errno.h (BSD: Cannot assign requested address): Error Codes.
int EADV errno.h (Linux???: Advertise error): Error Codes.
int EAFNOSUPPORT errno.h (BSD: Address family not supported by protocol): Error Codes.
int EAGAIN errno.h (POSIX.1: Resource temporarily unavailable): Error Codes.
int EALREADY errno.h (BSD: Operation already in progress): Error Codes.
int EAUTH errno.h (BSD: Authentication error): Error Codes.
int EBACKGROUND errno.h (GNU: Inappropriate operation for background process): Error Codes.
int EBADE errno.h (Linux???: Invalid exchange): Error Codes.
int EBADF errno.h (POSIX.1: Bad file descriptor): Error Codes.
int EBADFD errno.h (Linux???: File descriptor in bad state): Error Codes.
int EBADMSG errno.h (XOPEN: Bad message): Error Codes.
int EBADR errno.h (Linux???: Invalid request descriptor): Error Codes.
int EBADRPC errno.h (BSD: RPC struct is bad): Error Codes.
int EBADRQC errno.h (Linux???: Invalid request code): Error Codes.
int EBADSLT errno.h (Linux???: Invalid slot): Error Codes.
int EBFONT errno.h (Linux???: Bad font file format): Error Codes.
int EBUSY errno.h (POSIX.1: Device or resource busy): Error Codes.
int ECANCELED errno.h (POSIX.1: Operation canceled): Error Codes.
int ecb_crypt (char *key, char *blocks, unsigned len, unsigned mode) rpc/des_crypt.h (SUNRPC): DES Encryption.
int ECHILD errno.h (POSIX.1: No child processes): Error Codes.
tcflag_t ECHO termios.h (POSIX.1): Local Modes.
tcflag_t ECHOCTL termios.h (BSD): Local Modes.
tcflag_t ECHOE termios.h (POSIX.1): Local Modes.
tcflag_t ECHOK termios.h (POSIX.1): Local Modes.
tcflag_t ECHOKE termios.h (BSD): Local Modes.
tcflag_t ECHONL termios.h (POSIX.1): Local Modes.
tcflag_t ECHOPRT termios.h (BSD): Local Modes.
int ECHRNG errno.h (Linux???: Channel number out of range): Error Codes.
int ECOMM errno.h (Linux???: Communication error on send): Error Codes.
int ECONNABORTED errno.h (BSD: Software caused connection abort): Error Codes.
int ECONNREFUSED errno.h (BSD: Connection refused): Error Codes.
int ECONNRESET errno.h (BSD: Connection reset by peer): Error Codes.
char * ecvt (double value, int ndigit, int *decpt, int *neg) stdlib.h (SVID, Unix98): System V Number Conversion.
char * ecvt_r (double value, int ndigit, int *decpt, int *neg, char *buf, size_t len) stdlib.h (GNU): System V Number Conversion.
int ED errno.h (GNU: ?): Error Codes.
int EDEADLK errno.h (POSIX.1: Resource deadlock avoided): Error Codes.
int EDEADLOCK errno.h (Linux???: File locking deadlock error): Error Codes.
int EDESTADDRREQ errno.h (BSD: Destination address required): Error Codes.
int EDIED errno.h (GNU: Translator died): Error Codes.
int EDOM errno.h (ISO: Numerical argument out of domain): Error Codes.
int EDOTDOT errno.h (Linux???: RFS specific error): Error Codes.
int EDQUOT errno.h (BSD: Disk quota exceeded): Error Codes.
int EEXIST errno.h (POSIX.1: File exists): Error Codes.
int EFAULT errno.h (POSIX.1: Bad address): Error Codes.
int EFBIG errno.h (POSIX.1: File too large): Error Codes.
int EFTYPE errno.h (BSD: Inappropriate file type or format): Error Codes.
int EGRATUITOUS errno.h (GNU: Gratuitous error): Error Codes.
int EGREGIOUS errno.h (GNU: You really blew it this time): Error Codes.
int EHOSTDOWN errno.h (BSD: Host is down): Error Codes.
int EHOSTUNREACH errno.h (BSD: No route to host): Error Codes.
int EIDRM errno.h (XOPEN: Identifier removed): Error Codes.
int EIEIO errno.h (GNU: Computer bought the farm): Error Codes.
int EILSEQ errno.h (ISO: Invalid or incomplete multibyte or wide character): Error Codes.
int EINPROGRESS errno.h (BSD: Operation now in progress): Error Codes.
int EINTR errno.h (POSIX.1: Interrupted system call): Error Codes.
int EINVAL errno.h (POSIX.1: Invalid argument): Error Codes.
int EIO errno.h (POSIX.1: Input/output error): Error Codes.
int EISCONN errno.h (BSD: Transport endpoint is already connected): Error Codes.
int EISDIR errno.h (POSIX.1: Is a directory): Error Codes.
int EISNAM errno.h (Linux???: Is a named type file): Error Codes.
int EL2HLT errno.h (Obsolete: Level 2 halted): Error Codes.
int EL2NSYNC errno.h (Obsolete: Level 2 not synchronized): Error Codes.
int EL3HLT errno.h (Obsolete: Level 3 halted): Error Codes.
int EL3RST errno.h (Obsolete: Level 3 reset): Error Codes.
int ELIBACC errno.h (Linux???: Can not access a needed shared library): Error Codes.
int ELIBBAD errno.h (Linux???: Accessing a corrupted shared library): Error Codes.
int ELIBEXEC errno.h (Linux???: Cannot exec a shared library directly): Error Codes.
int ELIBMAX errno.h (Linux???: Attempting to link in too many shared libraries): Error Codes.
int ELIBSCN errno.h (Linux???: .lib section in a.out corrupted): Error Codes.
int ELNRNG errno.h (Linux???: Link number out of range): Error Codes.
int ELOOP errno.h (BSD: Too many levels of symbolic links): Error Codes.
int EMEDIUMTYPE errno.h (Linux???: Wrong medium type): Error Codes.
int EMFILE errno.h (POSIX.1: Too many open files): Error Codes.
int EMLINK errno.h (POSIX.1: Too many links): Error Codes.
EMPTY utmp.h (SVID): Manipulating the Database.
EMPTY utmpx.h (XPG4.2): XPG Functions.
int EMSGSIZE errno.h (BSD: Message too long): Error Codes.
int EMULTIHOP errno.h (XOPEN: Multihop attempted): Error Codes.
int ENAMETOOLONG errno.h (POSIX.1: File name too long): Error Codes.
int ENAVAIL errno.h (Linux???: No XENIX semaphores available): Error Codes.
void encrypt (char *block, int edflag) crypt.h (BSD, SVID): DES Encryption.
void encrypt_r (char *block, int edflag, struct crypt_data * data) crypt.h (GNU): DES Encryption.
void endfsent (void) fstab.h (BSD): fstab.
void endgrent (void) grp.h (SVID, BSD): Scanning All Groups.
void endhostent (void) netdb.h (BSD): Host Names.
int endmntent (FILE *stream) mntent.h (BSD): mtab.
void endnetent (void) netdb.h (BSD): Networks Database.
void endnetgrent (void) netdb.h (BSD): Lookup Netgroup.
void endprotoent (void) netdb.h (BSD): Protocols Database.
void endpwent (void) pwd.h (SVID, BSD): Scanning All Users.
void endservent (void) netdb.h (BSD): Services Database.
void endutent (void) utmp.h (SVID): Manipulating the Database.
void endutxent (void) utmpx.h (XPG4.2): XPG Functions.
int ENEEDAUTH errno.h (BSD: Need authenticator): Error Codes.
int ENETDOWN errno.h (BSD: Network is down): Error Codes.
int ENETRESET errno.h (BSD: Network dropped connection on reset): Error Codes.
int ENETUNREACH errno.h (BSD: Network is unreachable): Error Codes.
int ENFILE errno.h (POSIX.1: Too many open files in system): Error Codes.
int ENOANO errno.h (Linux???: No anode): Error Codes.
int ENOBUFS errno.h (BSD: No buffer space available): Error Codes.
int ENOCSI errno.h (Linux???: No CSI structure available): Error Codes.
int ENODATA errno.h (XOPEN: No data available): Error Codes.
int ENODEV errno.h (POSIX.1: No such device): Error Codes.
int ENOENT errno.h (POSIX.1: No such file or directory): Error Codes.
int ENOEXEC errno.h (POSIX.1: Exec format error): Error Codes.
int ENOLCK errno.h (POSIX.1: No locks available): Error Codes.
int ENOLINK errno.h (XOPEN: Link has been severed): Error Codes.
int ENOMEDIUM errno.h (Linux???: No medium found): Error Codes.
int ENOMEM errno.h (POSIX.1: Cannot allocate memory): Error Codes.
int ENOMSG errno.h (XOPEN: No message of desired type): Error Codes.
int ENONET errno.h (Linux???: Machine is not on the network): Error Codes.
int ENOPKG errno.h (Linux???: Package not installed): Error Codes.
int ENOPROTOOPT errno.h (BSD: Protocol not available): Error Codes.
int ENOSPC errno.h (POSIX.1: No space left on device): Error Codes.
int ENOSR errno.h (XOPEN: Out of streams resources): Error Codes.
int ENOSTR errno.h (XOPEN: Device not a stream): Error Codes.
int ENOSYS errno.h (POSIX.1: Function not implemented): Error Codes.
int ENOTBLK errno.h (BSD: Block device required): Error Codes.
int ENOTCONN errno.h (BSD: Transport endpoint is not connected): Error Codes.
int ENOTDIR errno.h (POSIX.1: Not a directory): Error Codes.
int ENOTEMPTY errno.h (POSIX.1: Directory not empty): Error Codes.
int ENOTNAM errno.h (Linux???: Not a XENIX named type file): Error Codes.
int ENOTSOCK errno.h (BSD: Socket operation on non-socket): Error Codes.
int ENOTSUP errno.h (POSIX.1: Not supported): Error Codes.
int ENOTTY errno.h (POSIX.1: Inappropriate ioctl for device): Error Codes.
int ENOTUNIQ errno.h (Linux???: Name not unique on network): Error Codes.
char ** environ unistd.h (POSIX.1): Environment Access.
error_t envz_add (char **envz, size_t *envz_len, const char *name, const char *value) envz.h (GNU): Envz Functions.
char * envz_entry (const char *envz, size_t envz_len, const char *name) envz.h (GNU): Envz Functions.
char * envz_get (const char *envz, size_t envz_len, const char *name) envz.h (GNU): Envz Functions.
error_t envz_merge (char **envz, size_t *envz_len, const char *envz2, size_t envz2_len, int override) envz.h (GNU): Envz Functions.
void envz_strip (char **envz, size_t *envz_len) envz.h (GNU): Envz Functions.
int ENXIO errno.h (POSIX.1: No such device or address): Error Codes.
int EOF stdio.h (ISO): EOF and Errors.
int EOPNOTSUPP errno.h (BSD: Operation not supported): Error Codes.
int EOVERFLOW errno.h (XOPEN: Value too large for defined data type): Error Codes.
int EPERM errno.h (POSIX.1: Operation not permitted): Error Codes.
int EPFNOSUPPORT errno.h (BSD: Protocol family not supported): Error Codes.
int EPIPE errno.h (POSIX.1: Broken pipe): Error Codes.
int EPROCLIM errno.h (BSD: Too many processes): Error Codes.
int EPROCUNAVAIL errno.h (BSD: RPC bad procedure for program): Error Codes.
int EPROGMISMATCH errno.h (BSD: RPC program version wrong): Error Codes.
int EPROGUNAVAIL errno.h (BSD: RPC program not available): Error Codes.
int EPROTO errno.h (XOPEN: Protocol error): Error Codes.
int EPROTONOSUPPORT errno.h (BSD: Protocol not supported): Error Codes.
int EPROTOTYPE errno.h (BSD: Protocol wrong type for socket): Error Codes.
int EQUIV_CLASS_MAX limits.h (POSIX.2): Utility Limits.
double erand48 (unsigned short int xsubi[3]) stdlib.h (SVID): SVID Random.
int erand48_r (unsigned short int xsubi[3], struct drand48_data *buffer, double *result) stdlib.h (GNU): SVID Random.
int ERANGE errno.h (ISO: Numerical result out of range): Error Codes.
int EREMCHG errno.h (Linux???: Remote address changed): Error Codes.
int EREMOTE errno.h (BSD: Object is remote): Error Codes.
int EREMOTEIO errno.h (Linux???: Remote I/O error): Error Codes.
int ERESTART errno.h (Linux???: Interrupted system call should be restarted): Error Codes.
double erf (double x) math.h (SVID): Special Functions.
double erfc (double x) math.h (SVID): Special Functions.
float erfcf (float x) math.h (SVID): Special Functions.
long double erfcl (long double x) math.h (SVID): Special Functions.
float erff (float x) math.h (SVID): Special Functions.
long double erfl (long double x) math.h (SVID): Special Functions.
int EROFS errno.h (POSIX.1: Read-only file system): Error Codes.
int ERPCMISMATCH errno.h (BSD: RPC version wrong): Error Codes.
void err (int status, const char *format, ...) err.h (BSD): Error Messages.
volatile int errno errno.h (ISO): Checking for Errors.
void error (int status, int errnum, const char *format, ...) error.h (GNU): Error Messages.
void error_at_line (int status, int errnum, const char *fname, unsigned int lineno, const char *format, ...) error.h (GNU): Error Messages.
unsigned int error_message_count error.h (GNU): Error Messages.
int error_one_per_line error.h (GNU): Error Messages.
void (* error_print_progname ) (void) error.h (GNU): Error Messages.
void errx (int status, const char *format, ...) err.h (BSD): Error Messages.
int ESHUTDOWN errno.h (BSD: Cannot send after transport endpoint shutdown): Error Codes.
int ESOCKTNOSUPPORT errno.h (BSD: Socket type not supported): Error Codes.
int ESPIPE errno.h (POSIX.1: Illegal seek): Error Codes.
int ESRCH errno.h (POSIX.1: No such process): Error Codes.
int ESRMNT errno.h (Linux???: Srmount error): Error Codes.
int ESTALE errno.h (BSD: Stale NFS file handle): Error Codes.
int ESTRPIPE errno.h (Linux???: Streams pipe error): Error Codes.
int ETIME errno.h (XOPEN: Timer expired): Error Codes.
int ETIMEDOUT errno.h (BSD: Connection timed out): Error Codes.
int ETOOMANYREFS errno.h (BSD: Too many references: cannot splice): Error Codes.
int ETXTBSY errno.h (BSD: Text file busy): Error Codes.
int EUCLEAN errno.h (Linux???: Structure needs cleaning): Error Codes.
int EUNATCH errno.h (Linux???: Protocol driver not attached): Error Codes.
int EUSERS errno.h (BSD: Too many users): Error Codes.
int EWOULDBLOCK errno.h (BSD: Operation would block): Error Codes.
int EXDEV errno.h (POSIX.1: Invalid cross-device link): Error Codes.
int execl (const char *filename, const char *arg0, ...) unistd.h (POSIX.1): Executing a File.
int execle (const char *filename, const char *arg0, char *const env[], ...) unistd.h (POSIX.1): Executing a File.
int execlp (const char *filename, const char *arg0, ...) unistd.h (POSIX.1): Executing a File.
int execv (const char *filename, char *const argv[]) unistd.h (POSIX.1): Executing a File.
int execve (const char *filename, char *const argv[], char *const env[]) unistd.h (POSIX.1): Executing a File.
int execvp (const char *filename, char *const argv[]) unistd.h (POSIX.1): Executing a File.
int EXFULL errno.h (Linux???: Exchange full): Error Codes.
void _Exit (int status) stdlib.h (ISO): Termination Internals.
void _exit (int status) unistd.h (POSIX.1): Termination Internals.
void exit (int status) stdlib.h (ISO): Normal Termination.
int EXIT_FAILURE stdlib.h (ISO): Exit Status.
int EXIT_SUCCESS stdlib.h (ISO): Exit Status.
double exp (double x) math.h (ISO): Exponents and Logarithms.
double exp10 (double x) math.h (GNU): Exponents and Logarithms.
float exp10f (float x) math.h (GNU): Exponents and Logarithms.
long double exp10l (long double x) math.h (GNU): Exponents and Logarithms.
double exp2 (double x) math.h (ISO): Exponents and Logarithms.
float exp2f (float x) math.h (ISO): Exponents and Logarithms.
long double exp2l (long double x) math.h (ISO): Exponents and Logarithms.
float expf (float x) math.h (ISO): Exponents and Logarithms.
long double expl (long double x) math.h (ISO): Exponents and Logarithms.
double expm1 (double x) math.h (ISO): Exponents and Logarithms.
float expm1f (float x) math.h (ISO): Exponents and Logarithms.
long double expm1l (long double x) math.h (ISO): Exponents and Logarithms.
int EXPR_NEST_MAX limits.h (POSIX.2): Utility Limits.
double fabs (double number) math.h (ISO): Absolute Value.
float fabsf (float number) math.h (ISO): Absolute Value.
long double fabsl (long double number) math.h (ISO): Absolute Value.
size_t __fbufsize (FILE *stream) stdio_ext.h (GNU): Controlling Buffering.
int fchdir (int filedes) unistd.h (XPG): Working Directory.
int fchmod (int filedes, int mode) sys/stat.h (BSD): Setting Permissions.
int fchown (int filedes, int owner, int group) unistd.h (BSD): File Owner.
int fclean (FILE *stream) stdio.h (GNU): Cleaning Streams.
int fclose (FILE *stream) stdio.h (ISO): Closing Streams.
int fcloseall (void) stdio.h (GNU): Closing Streams.
int fcntl (int filedes, int command, ...) fcntl.h (POSIX.1): Control Operations.
char * fcvt (double value, int ndigit, int *decpt, int *neg) stdlib.h (SVID, Unix98): System V Number Conversion.
char * fcvt_r (double value, int ndigit, int *decpt, int *neg, char *buf, size_t len) stdlib.h (SVID, Unix98): System V Number Conversion.
int fdatasync (int fildes) unistd.h (POSIX): Synchronizing I/O.
int FD_CLOEXEC fcntl.h (POSIX.1): Descriptor Flags.
void FD_CLR (int filedes, fd_set *set) sys/types.h (BSD): Waiting for I/O.
double fdim (double x, double y) math.h (ISO): Misc FP Arithmetic.
float fdimf (float x, float y) math.h (ISO): Misc FP Arithmetic.
long double fdiml (long double x, long double y) math.h (ISO): Misc FP Arithmetic.
int FD_ISSET (int filedes, fd_set *set) sys/types.h (BSD): Waiting for I/O.
FILE * fdopen (int filedes, const char *opentype) stdio.h (POSIX.1): Descriptors and Streams.
void FD_SET (int filedes, fd_set *set) sys/types.h (BSD): Waiting for I/O.
fd_set sys/types.h (BSD): Waiting for I/O.
int FD_SETSIZE sys/types.h (BSD): Waiting for I/O.
int F_DUPFD fcntl.h (POSIX.1): Duplicating Descriptors.
void FD_ZERO (fd_set *set) sys/types.h (BSD): Waiting for I/O.
int feclearexcept (int excepts) fenv.h (ISO): Status bit operations.
int fedisableexcept (int excepts) fenv.h (GNU): Control Functions.
FE_DIVBYZERO fenv.h (ISO): Status bit operations.
FE_DOWNWARD fenv.h (ISO): Rounding.
int feenableexcept (int excepts) fenv.h (GNU): Control Functions.
int fegetenv (fenv_t *envp) fenv.h (ISO): Control Functions.
int fegetexcept (int excepts) fenv.h (GNU): Control Functions.
int fegetexceptflag (fexcept_t *flagp, int excepts) fenv.h (ISO): Status bit operations.
int fegetround (void) fenv.h (ISO): Rounding.
int feholdexcept (fenv_t *envp) fenv.h (ISO): Control Functions.
FE_INEXACT fenv.h (ISO): Status bit operations.
FE_INVALID fenv.h (ISO): Status bit operations.
int feof (FILE *stream) stdio.h (ISO): EOF and Errors.
int feof_unlocked (FILE *stream) stdio.h (GNU): EOF and Errors.
FE_OVERFLOW fenv.h (ISO): Status bit operations.
int feraiseexcept (int excepts) fenv.h (ISO): Status bit operations.
int ferror (FILE *stream) stdio.h (ISO): EOF and Errors.
int ferror_unlocked (FILE *stream) stdio.h (GNU): EOF and Errors.
int fesetenv (const fenv_t *envp) fenv.h (ISO): Control Functions.
int fesetexceptflag (const fexcept_t *flagp, int fenv.h (ISO): Status bit operations.
int fesetround (int round) fenv.h (ISO): Rounding.
int fetestexcept (int excepts) fenv.h (ISO): Status bit operations.
FE_TONEAREST fenv.h (ISO): Rounding.
FE_TOWARDZERO fenv.h (ISO): Rounding.
FE_UNDERFLOW fenv.h (ISO): Status bit operations.
int feupdateenv (const fenv_t *envp) fenv.h (ISO): Control Functions.
FE_UPWARD fenv.h (ISO): Rounding.
int fflush (FILE *stream) stdio.h (ISO): Flushing Buffers.
int fflush_unlocked (FILE *stream) stdio.h (POSIX): Flushing Buffers.
int fgetc (FILE *stream) stdio.h (ISO): Character Input.
int fgetc_unlocked (FILE *stream) stdio.h (POSIX): Character Input.
int F_GETFD fcntl.h (POSIX.1): Descriptor Flags.
int F_GETFL fcntl.h (POSIX.1): Getting File Status Flags.
struct group * fgetgrent (FILE *stream) grp.h (SVID): Scanning All Groups.
int fgetgrent_r (FILE *stream, struct group *result_buf, char *buffer, size_t buflen, struct group **result) grp.h (GNU): Scanning All Groups.
int F_GETLK fcntl.h (POSIX.1): File Locks.
int F_GETOWN fcntl.h (BSD): Interrupt Input.
int fgetpos (FILE *stream, fpos_t *position) stdio.h (ISO): Portable Positioning.
int fgetpos64 (FILE *stream, fpos64_t *position) stdio.h (Unix98): Portable Positioning.
struct passwd * fgetpwent (FILE *stream) pwd.h (SVID): Scanning All Users.
int fgetpwent_r (FILE *stream, struct passwd *result_buf, char *buffer, size_t buflen, struct passwd **result) pwd.h (GNU): Scanning All Users.
char * fgets (char *s, int count, FILE *stream) stdio.h (ISO): Line Input.
char * fgets_unlocked (char *s, int count, FILE *stream) stdio.h (GNU): Line Input.
wint_t fgetwc (FILE *stream) wchar.h (ISO): Character Input.
wint_t fgetwc_unlocked (FILE *stream) wchar.h (GNU): Character Input.
wchar_t * fgetws (wchar_t *ws, int count, FILE *stream) wchar.h (ISO): Line Input.
wchar_t * fgetws_unlocked (wchar_t *ws, int count, FILE *stream) wchar.h (GNU): Line Input.
FILE stdio.h (ISO): Streams.
int FILENAME_MAX stdio.h (ISO): Limits for Files.
int fileno (FILE *stream) stdio.h (POSIX.1): Descriptors and Streams.
int fileno_unlocked (FILE *stream) stdio.h (GNU): Descriptors and Streams.
int finite (double x) math.h (BSD): Floating Point Classes.
int finitef (float x) math.h (BSD): Floating Point Classes.
int finitel (long double x) math.h (BSD): Floating Point Classes.
int __flbf (FILE *stream) stdio_ext.h (GNU): Controlling Buffering.
void flockfile (FILE *stream) stdio.h (POSIX): Streams and Threads.
double floor (double x) math.h (ISO): Rounding Functions.
float floorf (float x) math.h (ISO): Rounding Functions.
long double floorl (long double x) math.h (ISO): Rounding Functions.
FLT_DIG float.h (ISO): Floating Point Parameters.
FLT_EPSILON float.h (ISO): Floating Point Parameters.
FLT_MANT_DIG float.h (ISO): Floating Point Parameters.
FLT_MAX float.h (ISO): Floating Point Parameters.
FLT_MAX_10_EXP float.h (ISO): Floating Point Parameters.
FLT_MAX_EXP float.h (ISO): Floating Point Parameters.
FLT_MIN float.h (ISO): Floating Point Parameters.
FLT_MIN_10_EXP float.h (ISO): Floating Point Parameters.
FLT_MIN_EXP float.h (ISO): Floating Point Parameters.
FLT_RADIX float.h (ISO): Floating Point Parameters.
FLT_ROUNDS float.h (ISO): Floating Point Parameters.
void _flushlbf (void) stdio_ext.h (GNU): Flushing Buffers.
tcflag_t FLUSHO termios.h (BSD): Local Modes.
double fma (double x, double y, double z) math.h (ISO): Misc FP Arithmetic.
float fmaf (float x, float y, float z) math.h (ISO): Misc FP Arithmetic.
long double fmal (long double x, long double y, long double z) math.h (ISO): Misc FP Arithmetic.
double fmax (double x, double y) math.h (ISO): Misc FP Arithmetic.
float fmaxf (float x, float y) math.h (ISO): Misc FP Arithmetic.
long double fmaxl (long double x, long double y) math.h (ISO): Misc FP Arithmetic.
FILE * fmemopen (void *buf, size_t size, const char *opentype) stdio.h (GNU): String Streams.
double fmin (double x, double y) math.h (ISO): Misc FP Arithmetic.
float fminf (float x, float y) math.h (ISO): Misc FP Arithmetic.
long double fminl (long double x, long double y) math.h (ISO): Misc FP Arithmetic.
double fmod (double numerator, double denominator) math.h (ISO): Remainder Functions.
float fmodf (float numerator, float denominator) math.h (ISO): Remainder Functions.
long double fmodl (long double numerator, long double denominator) math.h (ISO): Remainder Functions.
int fmtmsg (long int classification, const char *label, int severity, const char *text, const char *action, const char *tag) fmtmsg.h (XPG): Printing Formatted Messages.
int fnmatch (const char *pattern, const char *string, int flags) fnmatch.h (POSIX.2): Wildcard Matching.
FNM_CASEFOLD fnmatch.h (GNU): Wildcard Matching.
FNM_EXTMATCH fnmatch.h (GNU): Wildcard Matching.
FNM_FILE_NAME fnmatch.h (GNU): Wildcard Matching.
FNM_LEADING_DIR fnmatch.h (GNU): Wildcard Matching.
FNM_NOESCAPE fnmatch.h (POSIX.2): Wildcard Matching.
FNM_PATHNAME fnmatch.h (POSIX.2): Wildcard Matching.
FNM_PERIOD fnmatch.h (POSIX.2): Wildcard Matching.
int F_OK unistd.h (POSIX.1): Testing File Access.
FILE * fopen (const char *filename, const char *opentype) stdio.h (ISO): Opening Streams.
FILE * fopen64 (const char *filename, const char *opentype) stdio.h (Unix98): Opening Streams.
FILE * fopencookie (void *cookie, const char *opentype, cookie_io_functions_t io-functions) stdio.h (GNU): Streams and Cookies.
int FOPEN_MAX stdio.h (ISO): Opening Streams.
pid_t fork (void) unistd.h (POSIX.1): Creating a Process.
int forkpty (int *amaster, char *name, struct termios *termp, struct winsize *winp) pty.h (BSD): Pseudo-Terminal Pairs.
long int fpathconf (int filedes, int parameter) unistd.h (POSIX.1): Pathconf.
int fpclassify (float-typex) math.h (ISO): Floating Point Classes.
FPE_DECOVF_TRAP signal.h (BSD): Program Error Signals.
FPE_FLTDIV_FAULT signal.h (BSD): Program Error Signals.
FPE_FLTDIV_TRAP signal.h (BSD): Program Error Signals.
FPE_FLTOVF_FAULT signal.h (BSD): Program Error Signals.
FPE_FLTOVF_TRAP signal.h (BSD): Program Error Signals.
FPE_FLTUND_FAULT signal.h (BSD): Program Error Signals.
FPE_FLTUND_TRAP signal.h (BSD): Program Error Signals.
FPE_INTDIV_TRAP signal.h (BSD): Program Error Signals.
FPE_INTOVF_TRAP signal.h (BSD): Program Error Signals.
size_t __fpending (FILE *stream) The __fpending stdio_ext.h (GNU): Controlling Buffering.
FPE_SUBRNG_TRAP signal.h (BSD): Program Error Signals.
int FP_ILOGB0 math.h (ISO): Exponents and Logarithms.
int FP_ILOGBNAN math.h (ISO): Exponents and Logarithms.
fpos64_t stdio.h (Unix98): Portable Positioning.
fpos_t stdio.h (ISO): Portable Positioning.
int fprintf (FILE *stream, const char *template, ...) stdio.h (ISO): Formatted Output Functions.
void __fpurge (FILE *stream) stdio_ext.h (GNU): Flushing Buffers.
int fputc (int c, FILE *stream) stdio.h (ISO): Simple Output.
int fputc_unlocked (int c, FILE *stream) stdio.h (POSIX): Simple Output.
int fputs (const char *s, FILE *stream) stdio.h (ISO): Simple Output.
int fputs_unlocked (const char *s, FILE *stream) stdio.h (GNU): Simple Output.
wint_t fputwc (wchar_t wc, FILE *stream) wchar.h (ISO): Simple Output.
wint_t fputwc_unlocked (wint_t wc, FILE *stream) wchar.h (POSIX): Simple Output.
int fputws (const wchar_t *ws, FILE *stream) wchar.h (ISO): Simple Output.
int fputws_unlocked (const wchar_t *ws, FILE *stream) wchar.h (GNU): Simple Output.
F_RDLCK fcntl.h (POSIX.1): File Locks.
size_t fread (void *data, size_t size, size_t count, FILE *stream) stdio.h (ISO): Block Input/Output.
int __freadable (FILE *stream) stdio_ext.h (GNU): Opening Streams.
int __freading (FILE *stream) stdio_ext.h (GNU): Opening Streams.
size_t fread_unlocked (void *data, size_t size, size_t count, FILE *stream) stdio.h (GNU): Block Input/Output.
void free (void *ptr) malloc.h, stdlib.h (ISO): Freeing after Malloc.
__free_hook malloc.h (GNU): Hooks for Malloc.
FILE * freopen (const char *filename, const char *opentype, FILE *stream) stdio.h (ISO): Opening Streams.
FILE * freopen64 (const char *filename, const char *opentype, FILE *stream) stdio.h (Unix98): Opening Streams.
double frexp (double value, int *exponent) math.h (ISO): Normalization Functions.
float frexpf (float value, int *exponent) math.h (ISO): Normalization Functions.
long double frexpl (long double value, int *exponent) math.h (ISO): Normalization Functions.
int fscanf (FILE *stream, const char *template, ...) stdio.h (ISO): Formatted Input Functions.
int fseek (FILE *stream, long int offset, int whence) stdio.h (ISO): File Positioning.
int fseeko (FILE *stream, off_t offset, int whence) stdio.h (Unix98): File Positioning.
int fseeko64 (FILE *stream, off64_t offset, int whence) stdio.h (Unix98): File Positioning.
int F_SETFD fcntl.h (POSIX.1): Descriptor Flags.
int F_SETFL fcntl.h (POSIX.1): Getting File Status Flags.
int F_SETLK fcntl.h (POSIX.1): File Locks.
int F_SETLKW fcntl.h (POSIX.1): File Locks.
int __fsetlocking (FILE *stream, int type) stdio_ext.h (GNU): Streams and Threads.
int F_SETOWN fcntl.h (BSD): Interrupt Input.
int fsetpos (FILE *stream, const fpos_t *position) stdio.h (ISO): Portable Positioning.
int fsetpos64 (FILE *stream, const fpos64_t *position) stdio.h (Unix98): Portable Positioning.
int fstat (int filedes, struct stat *buf) sys/stat.h (POSIX.1): Reading Attributes.
int fstat64 (int filedes, struct stat64 *buf) sys/stat.h (Unix98): Reading Attributes.
int fsync (int fildes) unistd.h (POSIX): Synchronizing I/O.
long int ftell (FILE *stream) stdio.h (ISO): File Positioning.
off_t ftello (FILE *stream) stdio.h (Unix98): File Positioning.
off64_t ftello64 (FILE *stream) stdio.h (Unix98): File Positioning.
int ftruncate (int fd, off_t length) unistd.h (POSIX): File Size.
int ftruncate64 (int id, off64_t length) unistd.h (Unix98): File Size.
int ftrylockfile (FILE *stream) stdio.h (POSIX): Streams and Threads.
int ftw (const char *filename, __ftw_func_t func, int descriptors) ftw.h (SVID): Working with Directory Trees.
int ftw64 (const char *filename, __ftw64_func_t func, int descriptors) ftw.h (Unix98): Working with Directory Trees.
__ftw64_func_t ftw.h (GNU): Working with Directory Trees.
__ftw_func_t ftw.h (GNU): Working with Directory Trees.
F_UNLCK fcntl.h (POSIX.1): File Locks.
void funlockfile (FILE *stream) stdio.h (POSIX): Streams and Threads.
int futimes (int *fd, struct timeval tvp[2]) sys/time.h (BSD): File Times.
int fwide (FILE *stream, int mode) wchar.h (ISO): Streams and I18N.
int fwprintf (FILE *stream, const wchar_t *template, ...) wchar.h (ISO): Formatted Output Functions.
int __fwritable (FILE *stream) stdio_ext.h (GNU): Opening Streams.
size_t fwrite (const void *data, size_t size, size_t count, FILE *stream) stdio.h (ISO): Block Input/Output.
size_t fwrite_unlocked (const void *data, size_t size, size_t count, FILE *stream) stdio.h (GNU): Block Input/Output.
int __fwriting (FILE *stream) stdio_ext.h (GNU): Opening Streams.
F_WRLCK fcntl.h (POSIX.1): File Locks.
int fwscanf (FILE *stream, const wchar_t *template, ...) wchar.h (ISO): Formatted Input Functions.
double gamma (double x) math.h (SVID): Special Functions.
float gammaf (float x) math.h (SVID): Special Functions.
long double gammal (long double x) math.h (SVID): Special Functions.
void (*__gconv_end_fct) (struct gconv_step *) gconv.h (GNU): glibc iconv Implementation.
int (*__gconv_fct) (struct __gconv_step *, struct __gconv_step_data *, const char **, const char *, size_t *, int) gconv.h (GNU): glibc iconv Implementation.
int (*__gconv_init_fct) (struct __gconv_step *) gconv.h (GNU): glibc iconv Implementation.
char * gcvt (double value, int ndigit, char *buf) stdlib.h (SVID, Unix98): System V Number Conversion.
long int get_avphys_pages (void) sys/sysinfo.h (GNU): Query Memory Parameters.
int getc (FILE *stream) stdio.h (ISO): Character Input.
int getchar (void) stdio.h (ISO): Character Input.
int getchar_unlocked (void) stdio.h (POSIX): Character Input.
int getcontext (ucontext_t *ucp) ucontext.h (SVID): System V contexts.
int getc_unlocked (FILE *stream) stdio.h (POSIX): Character Input.
char * get_current_dir_name (void) unistd.h (GNU): Working Directory.
char * getcwd (char *buffer, size_t size) unistd.h (POSIX.1): Working Directory.
struct tm * getdate (const char *string) time.h (Unix98): General Time String Parsing.
getdate_err time.h (Unix98): General Time String Parsing.
int getdate_r (const char *string, struct tm *tp) time.h (GNU): General Time String Parsing.
ssize_t getdelim (char **lineptr, size_t *n, int delimiter, FILE *stream) stdio.h (GNU): Line Input.
int getdomainnname (char *name, size_t length) unistd.h (???): Host Identification.
gid_t getegid (void) unistd.h (POSIX.1): Reading Persona.
char * getenv (const char *name) stdlib.h (ISO): Environment Access.
uid_t geteuid (void) unistd.h (POSIX.1): Reading Persona.
struct fstab * getfsent (void) fstab.h (BSD): fstab.
struct fstab * getfsfile (const char *name) fstab.h (BSD): fstab.
struct fstab * getfsspec (const char *name) fstab.h (BSD): fstab.
gid_t getgid (void) unistd.h (POSIX.1): Reading Persona.
struct group * getgrent (void) grp.h (SVID, BSD): Scanning All Groups.
int getgrent_r (struct group *result_buf, char *buffer, size_t buflen, struct group **result) grp.h (GNU): Scanning All Groups.
struct group * getgrgid (gid_t gid) grp.h (POSIX.1): Lookup Group.
int getgrgid_r (gid_t gid, struct group *result_buf, char *buffer, size_t buflen, struct group **result) grp.h (POSIX.1c): Lookup Group.
struct group * getgrnam (const char *name) grp.h (SVID, BSD): Lookup Group.
int getgrnam_r (const char *name, struct group *result_buf, char *buffer, size_t buflen, struct group **result) grp.h (POSIX.1c): Lookup Group.
int getgrouplist (const char *user, gid_t group, gid_t *groups, int *ngroups) grp.h (BSD): Setting Groups.
int getgroups (int count, gid_t *groups) unistd.h (POSIX.1): Reading Persona.
struct hostent * gethostbyaddr (const char *addr, size_t length, int format) netdb.h (BSD): Host Names.
int gethostbyaddr_r (const char *addr, size_t length, int format, struct hostent *restrict result_buf, char *restrict buf, size_t buflen, struct hostent **restrict result, int *restrict h_errnop) netdb.h (GNU): Host Names.
struct hostent * gethostbyname (const char *name) netdb.h (BSD): Host Names.
struct hostent * gethostbyname2 (const char *name, int af) netdb.h (IPv6 Basic API): Host Names.
int gethostbyname2_r (const char *name, int af, struct hostent *restrict result_buf, char *restrict buf, size_t buflen, struct hostent **restrict result, int *restrict h_errnop) netdb.h (GNU): Host Names.
int gethostbyname_r (const char *restrict name, struct hostent *restrict result_buf, char *restrict buf, size_t buflen, struct hostent **restrict result, int *restrict h_errnop) netdb.h (GNU): Host Names.
struct hostent * gethostent (void) netdb.h (BSD): Host Names.
long int gethostid (void) unistd.h (BSD): Host Identification.
int gethostname (char *name, size_t size) unistd.h (BSD): Host Identification.
int getitimer (int which, struct itimerval *old) sys/time.h (BSD): Setting an Alarm.
ssize_t getline (char **lineptr, size_t *n, FILE *stream) stdio.h (GNU): Line Input.
int getloadavg (double loadavg[], int nelem) stdlib.h (BSD): Processor Resources.
char * getlogin (void) unistd.h (POSIX.1): Who Logged In.
struct mntent * getmntent (FILE *stream) mntent.h (BSD): mtab.
struct mntent * getmntent_r (FILE *stream, struct mentent *result, char *buffer, int bufsize) mntent.h (BSD): mtab.
struct netent * getnetbyaddr (unsigned long int net, int type) netdb.h (BSD): Networks Database.
struct netent * getnetbyname (const char *name) netdb.h (BSD): Networks Database.
struct netent * getnetent (void) netdb.h (BSD): Networks Database.
int getnetgrent (char **hostp, char **userp, char **domainp) netdb.h (BSD): Lookup Netgroup.
int getnetgrent_r (char **hostp, char **userp, char **domainp, char *buffer, int buflen) netdb.h (GNU): Lookup Netgroup.
int get_nprocs (void) sys/sysinfo.h (GNU): Processor Resources.
int get_nprocs_conf (void) sys/sysinfo.h (GNU): Processor Resources.
int getopt (int argc, char **argv, const char *options) unistd.h (POSIX.2): Using Getopt.
int getopt_long (int argc, char *const *argv, const char *shortopts, const struct option *longopts, int *indexptr) getopt.h (GNU): Getopt Long Options.
int getopt_long_only (int argc, char *const *argv, const char *shortopts, const struct option *longopts, int *indexptr) getopt.h (GNU): Getopt Long Options.
int getpagesize (void) unistd.h (BSD): Query Memory Parameters.
char * getpass (const char *prompt) unistd.h (BSD): getpass.
int getpeername (int socket, struct sockaddr *addr, socklen_t *length-ptr) sys/socket.h (BSD): Who is Connected.
int getpgid (pid_t pid) unistd.h (SVID): Process Group Functions.
pid_t getpgrp (pid_t pid) unistd.h (BSD): Process Group Functions.
pid_t getpgrp (void) unistd.h (POSIX.1): Process Group Functions.
long int get_phys_pages (void) sys/sysinfo.h (GNU): Query Memory Parameters.
pid_t getpid (void) unistd.h (POSIX.1): Process Identification.
pid_t getppid (void) unistd.h (POSIX.1): Process Identification.
int getpriority (int class, int id) sys/resource.h (BSD,POSIX): Traditional Scheduling Functions.
struct protoent * getprotobyname (const char *name) netdb.h (BSD): Protocols Database.
struct protoent * getprotobynumber (int protocol) netdb.h (BSD): Protocols Database.
struct protoent * getprotoent (void) netdb.h (BSD): Protocols Database.
int getpt (void) stdlib.h (GNU): Allocation.
struct passwd * getpwent (void) pwd.h (POSIX.1): Scanning All Users.
int getpwent_r (struct passwd *result_buf, char *buffer, int buflen, struct passwd **result) pwd.h (GNU): Scanning All Users.
struct passwd * getpwnam (const char *name) pwd.h (POSIX.1): Lookup User.
int getpwnam_r (const char *name, struct passwd *result_buf, char *buffer, size_t buflen, struct passwd **result) pwd.h (POSIX.1c): Lookup User.
struct passwd * getpwuid (uid_t uid) pwd.h (POSIX.1): Lookup User.
int getpwuid_r (uid_t uid, struct passwd *result_buf, char *buffer, size_t buflen, struct passwd **result) pwd.h (POSIX.1c): Lookup User.
int getrlimit (int resource, struct rlimit *rlp) sys/resource.h (BSD): Limits on Resources.
int getrlimit64 (int resource, struct rlimit64 *rlp) sys/resource.h (Unix98): Limits on Resources.
int getrusage (int processes, struct rusage *rusage) sys/resource.h (BSD): Resource Usage.
char * gets (char *s) stdio.h (ISO): Line Input.
struct servent * getservbyname (const char *name, const char *proto) netdb.h (BSD): Services Database.
struct servent * getservbyport (int port, const char *proto) netdb.h (BSD): Services Database.
struct servent * getservent (void) netdb.h (BSD): Services Database.
pid_t getsid (pid_t pid) unistd.h (SVID): Process Group Functions.
int getsockname (int socket, struct sockaddr *addr, socklen_t *length-ptr) sys/socket.h (BSD): Reading Address.
int getsockopt (int socket, int level, int optname, void *optval, socklen_t *optlen-ptr) sys/socket.h (BSD): Socket Option Functions.
int getsubopt (char **optionp, const char* const *tokens, char **valuep) stdlib.h (stdlib.h): Suboptions.
char * gettext (const char *msgid) libintl.h (GNU): Translation with gettext.
int gettimeofday (struct timeval *tp, struct timezone *tzp) sys/time.h (BSD): High-Resolution Calendar.
uid_t getuid (void) unistd.h (POSIX.1): Reading Persona.
mode_t getumask (void) sys/stat.h (GNU): Setting Permissions.
struct utmp * getutent (void) utmp.h (SVID): Manipulating the Database.
int getutent_r (struct utmp *buffer, struct utmp **result) utmp.h (GNU): Manipulating the Database.
struct utmp * getutid (const struct utmp *id) utmp.h (SVID): Manipulating the Database.
int getutid_r (const struct utmp *id, struct utmp *buffer, struct utmp **result) utmp.h (GNU): Manipulating the Database.
struct utmp * getutline (const struct utmp *line) utmp.h (SVID): Manipulating the Database.
int getutline_r (const struct utmp *line, struct utmp *buffer, struct utmp **result) utmp.h (GNU): Manipulating the Database.
int getutmp (const struct utmpx *utmpx, struct utmp *utmp) utmp.h (GNU): XPG Functions.
int getutmpx (const struct utmp *utmp, struct utmpx *utmpx) utmp.h (GNU): XPG Functions.
struct utmpx * getutxent (void) utmpx.h (XPG4.2): XPG Functions.
struct utmpx * getutxid (const struct utmpx *id) utmpx.h (XPG4.2): XPG Functions.
struct utmpx * getutxline (const struct utmpx *line) utmpx.h (XPG4.2): XPG Functions.
int getw (FILE *stream) stdio.h (SVID): Character Input.
wint_t getwc (FILE *stream) wchar.h (ISO): Character Input.
wint_t getwchar (void) wchar.h (ISO): Character Input.
wint_t getwchar_unlocked (void) wchar.h (GNU): Character Input.
wint_t getwc_unlocked (FILE *stream) wchar.h (GNU): Character Input.
char * getwd (char *buffer) unistd.h (BSD): Working Directory.
gid_t sys/types.h (POSIX.1): Reading Persona.
int glob (const char *pattern, int flags, int (*errfunc) (const char *filename, int error-code), glob_t *vector-ptr) glob.h (POSIX.2): Calling Glob.
int glob64 (const char *pattern, int flags, int (*errfunc) (const char *filename, int error-code), glob64_t *vector-ptr) glob.h (GNU): Calling Glob.
glob64_t glob.h (GNU): Calling Glob.
GLOB_ABORTED glob.h (POSIX.2): Calling Glob.
GLOB_ALTDIRFUNC glob.h (GNU): More Flags for Globbing.
GLOB_APPEND glob.h (POSIX.2): Flags for Globbing.
GLOB_BRACE glob.h (GNU): More Flags for Globbing.
GLOB_DOOFFS glob.h (POSIX.2): Flags for Globbing.
GLOB_ERR glob.h (POSIX.2): Flags for Globbing.
void globfree (glob_t *pglob) glob.h (POSIX.2): More Flags for Globbing.
void globfree64 (glob64_t *pglob) glob.h (GNU): More Flags for Globbing.
GLOB_MAGCHAR glob.h (GNU): More Flags for Globbing.
GLOB_MARK glob.h (POSIX.2): Flags for Globbing.
GLOB_NOCHECK glob.h (POSIX.2): Flags for Globbing.
GLOB_NOESCAPE glob.h (POSIX.2): Flags for Globbing.
GLOB_NOMAGIC glob.h (GNU): More Flags for Globbing.
GLOB_NOMATCH glob.h (POSIX.2): Calling Glob.
GLOB_NOSORT glob.h (POSIX.2): Flags for Globbing.
GLOB_NOSPACE glob.h (POSIX.2): Calling Glob.
GLOB_ONLYDIR glob.h (GNU): More Flags for Globbing.
GLOB_PERIOD glob.h (GNU): More Flags for Globbing.
glob_t glob.h (POSIX.2): Calling Glob.
GLOB_TILDE glob.h (GNU): More Flags for Globbing.
GLOB_TILDE_CHECK glob.h (GNU): More Flags for Globbing.
struct tm * gmtime (const time_t *time) time.h (ISO): Broken-down Time.
struct tm * gmtime_r (const time_t *time, struct tm *resultp) time.h (POSIX.1c): Broken-down Time.
_GNU_SOURCE(GNU): Feature Test Macros.
int grantpt (int filedes) stdlib.h (SVID, XPG4.2): Allocation.
int gsignal (int signum) signal.h (SVID): Signaling Yourself.
int gtty (int filedes, struct sgttyb *attributes) sgtty.h (BSD): BSD Terminal Modes.
char * hasmntopt (const struct mntent *mnt, const char *opt) mntent.h (BSD): mtab.
int hcreate (size_t nel) search.h (SVID): Hash Search Function.
int hcreate_r (size_t nel, struct hsearch_data *htab) search.h (GNU): Hash Search Function.
void hdestroy (void) search.h (SVID): Hash Search Function.
void hdestroy_r (struct hsearch_data *htab) search.h (GNU): Hash Search Function.
HOST_NOT_FOUND netdb.h (BSD): Host Names.
ENTRY * hsearch (ENTRY item, ACTION action) search.h (SVID): Hash Search Function.
int hsearch_r (ENTRY item, ACTION action, ENTRY **retval, struct hsearch_data *htab) search.h (GNU): Hash Search Function.
uint32_t htonl (uint32_t hostlong) netinet/in.h (BSD): Byte Order.
uint16_t htons (uint16_t hostshort) netinet/in.h (BSD): Byte Order.
double HUGE_VAL math.h (ISO): Math Error Reporting.
float HUGE_VALF math.h (ISO): Math Error Reporting.
long double HUGE_VALL math.h (ISO): Math Error Reporting.
tcflag_t HUPCL termios.h (POSIX.1): Control Modes.
double hypot (double x, double y) math.h (ISO): Exponents and Logarithms.
float hypotf (float x, float y) math.h (ISO): Exponents and Logarithms.
long double hypotl (long double x, long double y) math.h (ISO): Exponents and Logarithms.
tcflag_t ICANON termios.h (POSIX.1): Local Modes.
size_t iconv (iconv_t cd, char **inbuf, size_t *inbytesleft, char **outbuf, size_t *outbytesleft) iconv.h (XPG2): Generic Conversion Interface.
int iconv_close (iconv_t cd) iconv.h (XPG2): Generic Conversion Interface.
iconv_t iconv_open (const char *tocode, const char *fromcode) iconv.h (XPG2): Generic Conversion Interface.
iconv_t iconv.h (XPG2): Generic Conversion Interface.
tcflag_t ICRNL termios.h (POSIX.1): Input Modes.
tcflag_t IEXTEN termios.h (POSIX.1): Local Modes.
void if_freenameindex (struct if_nameindex *ptr) net/if.h (IPv6 basic API): Interface Naming.
char * if_indextoname (unsigned int ifindex, char *ifname) net/if.h (IPv6 basic API): Interface Naming.
struct if_nameindex * if_nameindex (void) net/if.h (IPv6 basic API): Interface Naming.
unsigned int if_nametoindex (const char *ifname) net/if.h (IPv6 basic API): Interface Naming.
size_t IFNAMSIZ net/if.h (net/if.h): Interface Naming.
int IFTODT (mode_t mode) dirent.h (BSD): Directory Entries.
tcflag_t IGNBRK termios.h (POSIX.1): Input Modes.
tcflag_t IGNCR termios.h (POSIX.1): Input Modes.
tcflag_t IGNPAR termios.h (POSIX.1): Input Modes.
int ilogb (double x) math.h (ISO): Exponents and Logarithms.
int ilogbf (float x) math.h (ISO): Exponents and Logarithms.
int ilogbl (long double x) math.h (ISO): Exponents and Logarithms.
intmax_t imaxabs (intmax_t number) inttypes.h (ISO): Absolute Value.
tcflag_t IMAXBEL termios.h (BSD): Input Modes.
imaxdiv_t imaxdiv (intmax_t numerator, intmax_t denominator) inttypes.h (ISO): Integer Division.
imaxdiv_t inttypes.h (ISO): Integer Division.
struct in6_addr in6addr_any netinet/in.h (IPv6 basic API): Host Address Data Type.
struct in6_addr in6addr_loopback netinet/in.h (IPv6 basic API): Host Address Data Type.
uint32_t INADDR_ANY netinet/in.h (BSD): Host Address Data Type.
uint32_t INADDR_BROADCAST netinet/in.h (BSD): Host Address Data Type.
uint32_t INADDR_LOOPBACK netinet/in.h (BSD): Host Address Data Type.
uint32_t INADDR_NONE netinet/in.h (BSD): Host Address Data Type.
char * index (const char *string, int c) string.h (BSD): Search Functions.
uint32_t inet_addr (const char *name) arpa/inet.h (BSD): Host Address Functions.
int inet_aton (const char *name, struct in_addr *addr) arpa/inet.h (BSD): Host Address Functions.
uint32_t inet_lnaof (struct in_addr addr) arpa/inet.h (BSD): Host Address Functions.
struct in_addr inet_makeaddr (uint32_t net, uint32_t local) arpa/inet.h (BSD): Host Address Functions.
uint32_t inet_netof (struct in_addr addr) arpa/inet.h (BSD): Host Address Functions.
uint32_t inet_network (const char *name) arpa/inet.h (BSD): Host Address Functions.
char * inet_ntoa (struct in_addr addr) arpa/inet.h (BSD): Host Address Functions.
const char * inet_ntop (int af, const void *cp, char *buf, size_t len) arpa/inet.h (IPv6 basic API): Host Address Functions.
int inet_pton (int af, const char *cp, void *buf) arpa/inet.h (IPv6 basic API): Host Address Functions.
float INFINITY math.h (ISO): Infinity and NaN.
int initgroups (const char *user, gid_t group) grp.h (BSD): Setting Groups.
INIT_PROCESS utmp.h (SVID): Manipulating the Database.
INIT_PROCESS utmpx.h (XPG4.2): XPG Functions.
void * initstate (unsigned int seed, void *state, size_t size) stdlib.h (BSD): BSD Random.
int initstate_r (unsigned int seed, char *restrict statebuf, size_t statelen, struct random_data *restrict buf) stdlib.h (GNU): BSD Random.
tcflag_t INLCR termios.h (POSIX.1): Input Modes.
int innetgr (const char *netgroup, const char *host, const char *user, const char *domain) netdb.h (BSD): Netgroup Membership.
ino64_t sys/types.h (Unix98): Attribute Meanings.
ino_t sys/types.h (POSIX.1): Attribute Meanings.
tcflag_t INPCK termios.h (POSIX.1): Input Modes.
INT_MAX limits.h (ISO): Range of Type.
INT_MIN limits.h (ISO): Range of Type.
int ioctl (int filedes, int command, ...) sys/ioctl.h (BSD): IOCTLs.
int _IOFBF stdio.h (ISO): Controlling Buffering.
int _IOLBF stdio.h (ISO): Controlling Buffering.
int _IONBF stdio.h (ISO): Controlling Buffering.
int IPPORT_RESERVED netinet/in.h (BSD): Ports.
int IPPORT_USERRESERVED netinet/in.h (BSD): Ports.
int isalnum (int c) ctype.h (ISO): Classification of Characters.
int isalpha (int c) ctype.h (ISO): Classification of Characters.
int isascii (int c) ctype.h (SVID, BSD): Classification of Characters.
int isatty (int filedes) unistd.h (POSIX.1): Is It a Terminal.
int isblank (int c) ctype.h (GNU): Classification of Characters.
int iscntrl (int c) ctype.h (ISO): Classification of Characters.
int isdigit (int c) ctype.h (ISO): Classification of Characters.
int isfinite (float-typex) math.h (ISO): Floating Point Classes.
int isgraph (int c) ctype.h (ISO): Classification of Characters.
int isgreater (real-floatingx, real-floatingy) math.h (ISO): FP Comparison Functions.
int isgreaterequal (real-floatingx, real-floatingy) math.h (ISO): FP Comparison Functions.
tcflag_t ISIG termios.h (POSIX.1): Local Modes.
int isinf (double x) math.h (BSD): Floating Point Classes.
int isinff (float x) math.h (BSD): Floating Point Classes.
int isinfl (long double x) math.h (BSD): Floating Point Classes.
int isless (real-floatingx, real-floatingy) math.h (ISO): FP Comparison Functions.
int islessequal (real-floatingx, real-floatingy) math.h (ISO): FP Comparison Functions.
int islessgreater (real-floatingx, real-floatingy) math.h (ISO): FP Comparison Functions.
int islower (int c) ctype.h (ISO): Classification of Characters.
int isnan (float-typex) math.h (ISO): Floating Point Classes.
int isnan (double x) math.h (BSD): Floating Point Classes.
int isnanf (float x) math.h (BSD): Floating Point Classes.
int isnanl (long double x) math.h (BSD): Floating Point Classes.
int isnormal (float-typex) math.h (ISO): Floating Point Classes.
_ISOC99_SOURCE(GNU): Feature Test Macros.
int isprint (int c) ctype.h (ISO): Classification of Characters.
int ispunct (int c) ctype.h (ISO): Classification of Characters.
int isspace (int c) ctype.h (ISO): Classification of Characters.
tcflag_t ISTRIP termios.h (POSIX.1): Input Modes.
int isunordered (real-floatingx, real-floatingy) math.h (ISO): FP Comparison Functions.
int isupper (int c) ctype.h (ISO): Classification of Characters.
int iswalnum (wint_t wc) wctype.h (ISO): Classification of Wide Characters.
int iswalpha (wint_t wc) wctype.h (ISO): Classification of Wide Characters.
int iswblank (wint_t wc) wctype.h (GNU): Classification of Wide Characters.
int iswcntrl (wint_t wc) wctype.h (ISO): Classification of Wide Characters.
int iswctype (wint_t wc, wctype_t desc) wctype.h (ISO): Classification of Wide Characters.
int iswdigit (wint_t wc) wctype.h (ISO): Classification of Wide Characters.
int iswgraph (wint_t wc) wctype.h (ISO): Classification of Wide Characters.
int iswlower (wint_t wc) ctype.h (ISO): Classification of Wide Characters.
int iswprint (wint_t wc) wctype.h (ISO): Classification of Wide Characters.
int iswpunct (wint_t wc) wctype.h (ISO): Classification of Wide Characters.
int iswspace (wint_t wc) wctype.h (ISO): Classification of Wide Characters.
int iswupper (wint_t wc) wctype.h (ISO): Classification of Wide Characters.
int iswxdigit (wint_t wc) wctype.h (ISO): Classification of Wide Characters.
int isxdigit (int c) ctype.h (ISO): Classification of Characters.
ITIMER_PROF sys/time.h (BSD): Setting an Alarm.
ITIMER_REAL sys/time.h (BSD): Setting an Alarm.
ITIMER_VIRTUAL sys/time.h (BSD): Setting an Alarm.
tcflag_t IXANY termios.h (BSD): Input Modes.
tcflag_t IXOFF termios.h (POSIX.1): Input Modes.
tcflag_t IXON termios.h (POSIX.1): Input Modes.
double j0 (double x) math.h (SVID): Special Functions.
float j0f (float x) math.h (SVID): Special Functions.
long double j0l (long double x) math.h (SVID): Special Functions.
double j1 (double x) math.h (SVID): Special Functions.
float j1f (float x) math.h (SVID): Special Functions.
long double j1l (long double x) math.h (SVID): Special Functions.
jmp_buf setjmp.h (ISO): Non-Local Details.
double jn (int n, double x) math.h (SVID): Special Functions.
float jnf (int n, float x) math.h (SVID): Special Functions.
long double jnl (int n, long double x) math.h (SVID): Special Functions.
long int jrand48 (unsigned short int xsubi[3]) stdlib.h (SVID): SVID Random.
int jrand48_r (unsigned short int xsubi[3], struct drand48_data *buffer, long int *result) stdlib.h (GNU): SVID Random.
int kill (pid_t pid, int signum) signal.h (POSIX.1): Signaling Another Process.
int killpg (int pgid, int signum) signal.h (BSD): Signaling Another Process.
char * l64a (long int n) stdlib.h (XPG): Encode Binary Data.
long int labs (long int number) stdlib.h (ISO): Absolute Value.
LANG locale.h (ISO): Locale Categories.
LC_ALL locale.h (ISO): Locale Categories.
LC_COLLATE locale.h (ISO): Locale Categories.
LC_CTYPE locale.h (ISO): Locale Categories.
LC_MESSAGES locale.h (XOPEN): Locale Categories.
LC_MONETARY locale.h (ISO): Locale Categories.
LC_NUMERIC locale.h (ISO): Locale Categories.
void lcong48 (unsigned short int param[7]) stdlib.h (SVID): SVID Random.
int lcong48_r (unsigned short int param[7], struct drand48_data *buffer) stdlib.h (GNU): SVID Random.
int L_ctermid stdio.h (POSIX.1): Identifying the Terminal.
LC_TIME locale.h (ISO): Locale Categories.
int L_cuserid stdio.h (POSIX.1): Who Logged In.
double ldexp (double value, int exponent) math.h (ISO): Normalization Functions.
float ldexpf (float value, int exponent) math.h (ISO): Normalization Functions.
long double ldexpl (long double value, int exponent) math.h (ISO): Normalization Functions.
ldiv_t ldiv (long int numerator, long int denominator) stdlib.h (ISO): Integer Division.
ldiv_t stdlib.h (ISO): Integer Division.
void * lfind (const void *key, void *base, size_t *nmemb, size_t size, comparison_fn_t compar) search.h (SVID): Array Search Function.
double lgamma (double x) math.h (SVID): Special Functions.
float lgammaf (float x) math.h (SVID): Special Functions.
float lgammaf_r (float x, int *signp) math.h (XPG): Special Functions.
long double lgammal (long double x) math.h (SVID): Special Functions.
long double lgammal_r (long double x, int *signp) math.h (XPG): Special Functions.
double lgamma_r (double x, int *signp) math.h (XPG): Special Functions.
L_INCR sys/file.h (BSD): File Positioning.
int LINE_MAX limits.h (POSIX.2): Utility Limits.
int link (const char *oldname, const char *newname) unistd.h (POSIX.1): Hard Links.
int LINK_MAX limits.h (POSIX.1): Limits for Files.
int lio_listio (int mode, struct aiocb *const list[], int nent, struct sigevent *sig) aio.h (POSIX.1b): Asynchronous Reads/Writes.
int lio_listio64 (int mode, struct aiocb *const list, int nent, struct sigevent *sig) aio.h (Unix98): Asynchronous Reads/Writes.
int listen (int socket, unsigned int n) sys/socket.h (BSD): Listening.
long long int llabs (long long int number) stdlib.h (ISO): Absolute Value.
lldiv_t lldiv (long long int numerator, long long int denominator) stdlib.h (ISO): Integer Division.
lldiv_t stdlib.h (ISO): Integer Division.
long long int llrint (double x) math.h (ISO): Rounding Functions.
long long int llrintf (float x) math.h (ISO): Rounding Functions.
long long int llrintl (long double x) math.h (ISO): Rounding Functions.
long long int llround (double x) math.h (ISO): Rounding Functions.
long long int llroundf (float x) math.h (ISO): Rounding Functions.
long long int llroundl (long double x) math.h (ISO): Rounding Functions.
struct lconv * localeconv (void) locale.h (ISO): The Lame Way to Locale Data.
struct tm * localtime (const time_t *time) time.h (ISO): Broken-down Time.
struct tm * localtime_r (const time_t *time, struct tm *resultp) time.h (POSIX.1c): Broken-down Time.
double log (double x) math.h (ISO): Exponents and Logarithms.
double log10 (double x) math.h (ISO): Exponents and Logarithms.
float log10f (float x) math.h (ISO): Exponents and Logarithms.
long double log10l (long double x) math.h (ISO): Exponents and Logarithms.
double log1p (double x) math.h (ISO): Exponents and Logarithms.
float log1pf (float x) math.h (ISO): Exponents and Logarithms.
long double log1pl (long double x) math.h (ISO): Exponents and Logarithms.
double log2 (double x) math.h (ISO): Exponents and Logarithms.
float log2f (float x) math.h (ISO): Exponents and Logarithms.
long double log2l (long double x) math.h (ISO): Exponents and Logarithms.
double logb (double x) math.h (ISO): Exponents and Logarithms.
float logbf (float x) math.h (ISO): Exponents and Logarithms.
long double logbl (long double x) math.h (ISO): Exponents and Logarithms.
float logf (float x) math.h (ISO): Exponents and Logarithms.
void login (const struct utmp *entry) utmp.h (BSD): Logging In and Out.
LOGIN_PROCESS utmp.h (SVID): Manipulating the Database.
LOGIN_PROCESS utmpx.h (XPG4.2): XPG Functions.
int login_tty (int filedes) utmp.h (BSD): Logging In and Out.
long double logl (long double x) math.h (ISO): Exponents and Logarithms.
int logout (const char *ut_line) utmp.h (BSD): Logging In and Out.
void logwtmp (const char *ut_line, const char *ut_name, const char *ut_host) utmp.h (BSD): Logging In and Out.
void longjmp (jmp_buf state, int value) setjmp.h (ISO): Non-Local Details.
LONG_LONG_MAX limits.h (GNU): Range of Type.
LONG_LONG_MIN limits.h (GNU): Range of Type.
LONG_MAX limits.h (ISO): Range of Type.
LONG_MIN limits.h (ISO): Range of Type.
long int lrand48 (void) stdlib.h (SVID): SVID Random.
int lrand48_r (struct drand48_data *buffer, double *result) stdlib.h (GNU): SVID Random.
long int lrint (double x) math.h (ISO): Rounding Functions.
long int lrintf (float x) math.h (ISO): Rounding Functions.
long int lrintl (long double x) math.h (ISO): Rounding Functions.
long int lround (double x) math.h (ISO): Rounding Functions.
long int lroundf (float x) math.h (ISO): Rounding Functions.
long int lroundl (long double x) math.h (ISO): Rounding Functions.
void * lsearch (const void *key, void *base, size_t *nmemb, size_t size, comparison_fn_t compar) search.h (SVID): Array Search Function.
off_t lseek (int filedes, off_t offset, int whence) unistd.h (POSIX.1): File Position Primitive.
off64_t lseek64 (int filedes, off64_t offset, int whence) unistd.h (Unix98): File Position Primitive.
L_SET sys/file.h (BSD): File Positioning.
int lstat (const char *filename, struct stat *buf) sys/stat.h (BSD): Reading Attributes.
int lstat64 (const char *filename, struct stat64 *buf) sys/stat.h (Unix98): Reading Attributes.
int L_tmpnam stdio.h (ISO): Temporary Files.
int lutimes (const char *filename, struct timeval tvp[2]) sys/time.h (BSD): File Times.
L_XTND sys/file.h (BSD): File Positioning.
int madvise (void *addr, size_t length, int advice) sys/mman.h (POSIX): Memory-mapped I/O.
void makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...) ucontext.h (SVID): System V contexts.
struct mallinfo mallinfo (void) malloc.h (SVID): Statistics of Malloc.
void * malloc (size_t size) malloc.h, stdlib.h (ISO): Basic Allocation.
__malloc_hook malloc.h (GNU): Hooks for Malloc.
__malloc_initialize_hook malloc.h (GNU): Hooks for Malloc.
int MAX_CANON limits.h (POSIX.1): Limits for Files.
int MAX_INPUT limits.h (POSIX.1): Limits for Files.
int MAXNAMLEN dirent.h (BSD): Limits for Files.
int MAXSYMLINKS sys/param.h (BSD): Symbolic Links.
int MB_CUR_MAX stdlib.h (ISO): Selecting the Conversion.
int mblen (const char *string, size_t size) stdlib.h (ISO): Non-reentrant Character Conversion.
int MB_LEN_MAX limits.h (ISO): Selecting the Conversion.
size_t mbrlen (const char *restrict s, size_t n, mbstate_t *ps) wchar.h (ISO): Converting a Character.
size_t mbrtowc (wchar_t *restrict pwc, const char *restrict s, size_t n, mbstate_t *restrict ps) wchar.h (ISO): Converting a Character.
int mbsinit (const mbstate_t *ps) wchar.h (ISO): Keeping the state.
size_t mbsnrtowcs (wchar_t *restrict dst, const char **restrict src, size_t nmc, size_t len, mbstate_t *restrict ps) wchar.h (GNU): Converting Strings.
size_t mbsrtowcs (wchar_t *restrict dst, const char **restrict src, size_t len, mbstate_t *restrict ps) wchar.h (ISO): Converting Strings.
mbstate_t wchar.h (ISO): Keeping the state.
size_t mbstowcs (wchar_t *wstring, const char *string, size_t size) stdlib.h (ISO): Non-reentrant String Conversion.
int mbtowc (wchar_t *restrict result, const char *restrict string, size_t size) stdlib.h (ISO): Non-reentrant Character Conversion.
int mcheck (void (*abortfn) (enum mcheck_status status)) mcheck.h (GNU): Heap Consistency Checking.
tcflag_t MDMBUF termios.h (BSD): Control Modes.
void * memalign (size_t boundary, size_t size) malloc.h (BSD): Aligned Memory Blocks.
__memalign_hook malloc.h (GNU): Hooks for Malloc.
void * memccpy (void *restrict to, const void *restrict from, int c, size_t size) string.h (SVID): Copying and Concatenation.
void * memchr (const void *block, int c, size_t size) string.h (ISO): Search Functions.
int memcmp (const void *a1, const void *a2, size_t size) string.h (ISO): String/Array Comparison.
void * memcpy (void *restrict to, const void *restrict from, size_t size) string.h (ISO): Copying and Concatenation.
void * memfrob (void *mem, size_t length) string.h (GNU): Trivial Encryption.
void * memmem (const void *haystack, size_t haystack-len, const void *needle, size_t needle-len) string.h (GNU): Search Functions.
void * memmove (void *to, const void *from, size_t size) string.h (ISO): Copying and Concatenation.
void * mempcpy (void *restrict to, const void *restrict from, size_t size) string.h (GNU): Copying and Concatenation.
void * memrchr (const void *block, int c, size_t size) string.h (GNU): Search Functions.
void * memset (void *block, int c, size_t size) string.h (ISO): Copying and Concatenation.
int mkdir (const char *filename, mode_t mode) sys/stat.h (POSIX.1): Creating Directories.
char * mkdtemp (char *template) stdlib.h (BSD): Temporary Files.
int mkfifo (const char *filename, mode_t mode) sys/stat.h (POSIX.1): FIFO Special Files.
int mknod (const char *filename, int mode, int dev) sys/stat.h (BSD): Making Special Files.
int mkstemp (char *template) stdlib.h (BSD): Temporary Files.
char * mktemp (char *template) stdlib.h (Unix): Temporary Files.
time_t mktime (struct tm *brokentime) time.h (ISO): Broken-down Time.
int mlock (const void *addr, size_t len) sys/mman.h (POSIX.1b): Page Lock Functions.
int mlockall (int flags) sys/mman.h (POSIX.1b): Page Lock Functions.
void * mmap (void *address, size_t length,int protect, int flags, int filedes, off_t offset) sys/mman.h (POSIX): Memory-mapped I/O.
void * mmap64 (void *address, size_t length,int protect, int flags, int filedes, off64_t offset) sys/mman.h (LFS): Memory-mapped I/O.
mode_t sys/types.h (POSIX.1): Attribute Meanings.
double modf (double value, double *integer-part) math.h (ISO): Rounding Functions.
float modff (float value, float *integer-part) math.h (ISO): Rounding Functions.
long double modfl (long double value, long double *integer-part) math.h (ISO): Rounding Functions.
int mount (const char *special_file, const char *dir, const char *fstype, unsigned long int options, const void *data) sys/mount.h (SVID, BSD): Mount-Unmount-Remount.
long int mrand48 (void) stdlib.h (SVID): SVID Random.
int mrand48_r (struct drand48_data *buffer, double *result) stdlib.h (GNU): SVID Random.
void * mremap (void *address, size_t length, size_t new_length, int flag) sys/mman.h (GNU): Memory-mapped I/O.
int MSG_DONTROUTE sys/socket.h (BSD): Socket Data Options.
int MSG_OOB sys/socket.h (BSD): Socket Data Options.
int MSG_PEEK sys/socket.h (BSD): Socket Data Options.
int msync (void *address, size_t length, int flags) sys/mman.h (POSIX): Memory-mapped I/O.
void mtrace (void) mcheck.h (GNU): Tracing malloc.
int munlock (const void *addr, size_t len) sys/mman.h (POSIX.1b): Page Lock Functions.
int munlockall (void) sys/mman.h (POSIX.1b): Page Lock Functions.
int munmap (void *addr, size_t length) sys/mman.h (POSIX): Memory-mapped I/O.
void muntrace (void) mcheck.h (GNU): Tracing malloc.
int NAME_MAX limits.h (POSIX.1): Limits for Files.
float NAN math.h (GNU): Infinity and NaN.
double nan (const char *tagp) math.h (ISO): FP Bit Twiddling.
float nanf (const char *tagp) math.h (ISO): FP Bit Twiddling.
long double nanl (const char *tagp) math.h (ISO): FP Bit Twiddling.
int nanosleep (const struct timespec *requested_time, struct timespec *remaining) time.h (POSIX.1): Sleeping.
int NCCS termios.h (POSIX.1): Mode Data Types.
double nearbyint (double x) math.h (ISO): Rounding Functions.
float nearbyintf (float x) math.h (ISO): Rounding Functions.
long double nearbyintl (long double x) math.h (ISO): Rounding Functions.
NEW_TIME utmp.h (SVID): Manipulating the Database.
NEW_TIME utmpx.h (XPG4.2): XPG Functions.
double nextafter (double x, double y) math.h (ISO): FP Bit Twiddling.
float nextafterf (float x, float y) math.h (ISO): FP Bit Twiddling.
long double nextafterl (long double x, long double y) math.h (ISO): FP Bit Twiddling.
double nexttoward (double x, long double y) math.h (ISO): FP Bit Twiddling.
float nexttowardf (float x, long double y) math.h (ISO): FP Bit Twiddling.
long double nexttowardl (long double x, long double y) math.h (ISO): FP Bit Twiddling.
int nftw (const char *filename, __nftw_func_t func, int descriptors, int flag) ftw.h (XPG4.2): Working with Directory Trees.
int nftw64 (const char *filename, __nftw64_func_t func, int descriptors, int flag) ftw.h (Unix98): Working with Directory Trees.
__nftw64_func_t ftw.h (GNU): Working with Directory Trees.
__nftw_func_t ftw.h (GNU): Working with Directory Trees.
char * ngettext (const char *msgid1, const char *msgid2, unsigned long int n) libintl.h (GNU): Advanced gettext functions.
int NGROUPS_MAX limits.h (POSIX.1): General Limits.
int nice (int increment) unistd.h (BSD): Traditional Scheduling Functions.
nlink_t sys/types.h (POSIX.1): Attribute Meanings.
char * nl_langinfo (nl_item item) langinfo.h (XOPEN): The Elegant and Fast Way.
NO_ADDRESS netdb.h (BSD): Host Names.
tcflag_t NOFLSH termios.h (POSIX.1): Local Modes.
tcflag_t NOKERNINFO termios.h (BSD): Local Modes.
NO_RECOVERY netdb.h (BSD): Host Names.
long int nrand48 (unsigned short int xsubi[3]) stdlib.h (SVID): SVID Random.
int nrand48_r (unsigned short int xsubi[3], struct drand48_data *buffer, long int *result) stdlib.h (GNU): SVID Random.
int NSIG signal.h (BSD): Standard Signals.
uint32_t ntohl (uint32_t netlong) netinet/in.h (BSD): Byte Order.
uint16_t ntohs (uint16_t netshort) netinet/in.h (BSD): Byte Order.
int ntp_adjtime (struct timex *tptr) sys/timex.h (GNU): High Accuracy Clock.
int ntp_gettime (struct ntptimeval *tptr) sys/timex.h (GNU): High Accuracy Clock.
void * NULL stddef.h (ISO): Null Pointer Constant.
int O_ACCMODE fcntl.h (POSIX.1): Access Modes.
int O_APPEND fcntl.h (POSIX.1): Operating Modes.
int O_ASYNC fcntl.h (BSD): Operating Modes.
void obstack_1grow (struct obstack *obstack-ptr, char c) obstack.h (GNU): Growing Objects.
void obstack_1grow_fast (struct obstack *obstack-ptr, char c) obstack.h (GNU): Extra Fast Growing.
int obstack_alignment_mask (struct obstack *obstack-ptr) obstack.h (GNU): Obstacks Data Alignment.
void * obstack_alloc (struct obstack *obstack-ptr, int size) obstack.h (GNU): Allocation in an Obstack.
obstack_alloc_failed_handler obstack.h (GNU): Preparing for Obstacks.
void * obstack_base (struct obstack *obstack-ptr) obstack.h (GNU): Status of an Obstack.
void obstack_blank (struct obstack *obstack-ptr, int size) obstack.h (GNU): Growing Objects.
void obstack_blank_fast (struct obstack *obstack-ptr, int size) obstack.h (GNU): Extra Fast Growing.
int obstack_chunk_size (struct obstack *obstack-ptr) obstack.h (GNU): Obstack Chunks.
void * obstack_copy (struct obstack *obstack-ptr, void *address, int size) obstack.h (GNU): Allocation in an Obstack.
void * obstack_copy0 (struct obstack *obstack-ptr, void *address, int size) obstack.h (GNU): Allocation in an Obstack.
void * obstack_finish (struct obstack *obstack-ptr) obstack.h (GNU): Growing Objects.
void obstack_free (struct obstack *obstack-ptr, void *object) obstack.h (GNU): Freeing Obstack Objects.
void obstack_grow (struct obstack *obstack-ptr, void *data, int size) obstack.h (GNU): Growing Objects.
void obstack_grow0 (struct obstack *obstack-ptr, void *data, int size) obstack.h (GNU): Growing Objects.
int obstack_init (struct obstack *obstack-ptr) obstack.h (GNU): Preparing for Obstacks.
void obstack_int_grow (struct obstack *obstack-ptr, int data) obstack.h (GNU): Growing Objects.
void obstack_int_grow_fast (struct obstack *obstack-ptr, int data) obstack.h (GNU): Extra Fast Growing.
void * obstack_next_free (struct obstack *obstack-ptr) obstack.h (GNU): Status of an Obstack.
int obstack_object_size (struct obstack *obstack-ptr) obstack.h (GNU): Growing Objects.
int obstack_object_size (struct obstack *obstack-ptr) obstack.h (GNU): Status of an Obstack.
int obstack_printf (struct obstack *obstack, const char *template, ...) stdio.h (GNU): Dynamic Output.
void obstack_ptr_grow (struct obstack *obstack-ptr, void *data) obstack.h (GNU): Growing Objects.
void obstack_ptr_grow_fast (struct obstack *obstack-ptr, void *data) obstack.h (GNU): Extra Fast Growing.
int obstack_room (struct obstack *obstack-ptr) obstack.h (GNU): Extra Fast Growing.
int obstack_vprintf (struct obstack *obstack, const char *template, va_list ap) stdio.h (GNU): Variable Arguments Output.
int O_CREAT fcntl.h (POSIX.1): Open-time Flags.
int O_EXCL fcntl.h (POSIX.1): Open-time Flags.
int O_EXEC fcntl.h (GNU): Access Modes.
int O_EXLOCK fcntl.h (BSD): Open-time Flags.
off64_t sys/types.h (Unix98): File Position Primitive.
size_t offsetof (type, member) stddef.h (ISO): Structure Measurement.
off_t sys/types.h (POSIX.1): File Position Primitive.
int O_FSYNC fcntl.h (BSD): Operating Modes.
int O_IGNORE_CTTY fcntl.h (GNU): Open-time Flags.
OLD_TIME utmp.h (SVID): Manipulating the Database.
OLD_TIME utmpx.h (XPG4.2): XPG Functions.
int O_NDELAY fcntl.h (BSD): Operating Modes.
int on_exit (void (*function)(int status, void *arg), void *arg) stdlib.h (SunOS): Cleanups on Exit.
tcflag_t ONLCR termios.h (BSD): Output Modes.
int O_NOATIME fcntl.h (GNU): Operating Modes.
int O_NOCTTY fcntl.h (POSIX.1): Open-time Flags.
tcflag_t ONOEOT termios.h (BSD): Output Modes.
int O_NOLINK fcntl.h (GNU): Open-time Flags.
int O_NONBLOCK fcntl.h (POSIX.1): Open-time Flags.
int O_NONBLOCK fcntl.h (POSIX.1): Operating Modes.
int O_NOTRANS fcntl.h (GNU): Open-time Flags.
int open (const char *filename, int flags[, mode_t mode]) fcntl.h (POSIX.1): Opening and Closing Files.
int open64 (const char *filename, int flags[, mode_t mode]) fcntl.h (Unix98): Opening and Closing Files.
DIR * opendir (const char *dirname) dirent.h (POSIX.1): Opening a Directory.
void openlog (const char *ident, int option, int facility) syslog.h (BSD): openlog.
int OPEN_MAX limits.h (POSIX.1): General Limits.
FILE * open_memstream (char **ptr, size_t *sizeloc) stdio.h (GNU): String Streams.
FILE * open_obstack_stream (struct obstack *obstack) stdio.h (GNU): Obstack Streams.
int openpty (int *amaster, int *aslave, char *name, struct termios *termp, struct winsize *winp) pty.h (BSD): Pseudo-Terminal Pairs.
tcflag_t OPOST termios.h (POSIX.1): Output Modes.
char * optarg unistd.h (POSIX.2): Using Getopt.
int opterr unistd.h (POSIX.2): Using Getopt.
int optind unistd.h (POSIX.2): Using Getopt.
OPTION_ALIAS argp.h (GNU): Argp Option Flags.
OPTION_ARG_OPTIONAL argp.h (GNU): Argp Option Flags.
OPTION_DOC argp.h (GNU): Argp Option Flags.
OPTION_HIDDEN argp.h (GNU): Argp Option Flags.
OPTION_NO_USAGE argp.h (GNU): Argp Option Flags.
int optopt unistd.h (POSIX.2): Using Getopt.
int O_RDONLY fcntl.h (POSIX.1): Access Modes.
int O_RDWR fcntl.h (POSIX.1): Access Modes.
int O_READ fcntl.h (GNU): Access Modes.
int O_SHLOCK fcntl.h (BSD): Open-time Flags.
int O_SYNC fcntl.h (BSD): Operating Modes.
int O_TRUNC fcntl.h (POSIX.1): Open-time Flags.
int O_WRITE fcntl.h (GNU): Access Modes.
int O_WRONLY fcntl.h (POSIX.1): Access Modes.
tcflag_t OXTABS termios.h (BSD): Output Modes.
PA_CHAR printf.h (GNU): Parsing a Template String.
PA_DOUBLE printf.h (GNU): Parsing a Template String.
PA_FLAG_LONG printf.h (GNU): Parsing a Template String.
PA_FLAG_LONG_DOUBLE printf.h (GNU): Parsing a Template String.
PA_FLAG_LONG_LONG printf.h (GNU): Parsing a Template String.
int PA_FLAG_MASK printf.h (GNU): Parsing a Template String.
PA_FLAG_PTR printf.h (GNU): Parsing a Template String.
PA_FLAG_SHORT printf.h (GNU): Parsing a Template String.
PA_FLOAT printf.h (GNU): Parsing a Template String.
PA_INT printf.h (GNU): Parsing a Template String.
PA_LAST printf.h (GNU): Parsing a Template String.
PA_POINTER printf.h (GNU): Parsing a Template String.
tcflag_t PARENB termios.h (POSIX.1): Control Modes.
tcflag_t PARMRK termios.h (POSIX.1): Input Modes.
tcflag_t PARODD termios.h (POSIX.1): Control Modes.
size_t parse_printf_format (const char *template, size_t n, int *argtypes) printf.h (GNU): Parsing a Template String.
PA_STRING printf.h (GNU): Parsing a Template String.
long int pathconf (const char *filename, int parameter) unistd.h (POSIX.1): Pathconf.
int PATH_MAX limits.h (POSIX.1): Limits for Files.
int pause () unistd.h (POSIX.1): Using Pause.
_PC_ASYNC_IO unistd.h (POSIX.1): Pathconf.
_PC_CHOWN_RESTRICTED unistd.h (POSIX.1): Pathconf.
_PC_FILESIZEBITS unistd.h (LFS): Pathconf.
_PC_LINK_MAX unistd.h (POSIX.1): Pathconf.
int pclose (FILE *stream) stdio.h (POSIX.2, SVID, BSD): Pipe to a Subprocess.
_PC_MAX_CANON unistd.h (POSIX.1): Pathconf.
_PC_MAX_INPUT unistd.h (POSIX.1): Pathconf.
_PC_NAME_MAX unistd.h (POSIX.1): Pathconf.
_PC_NO_TRUNC unistd.h (POSIX.1): Pathconf.
_PC_PATH_MAX unistd.h (POSIX.1): Pathconf.
_PC_PIPE_BUF unistd.h (POSIX.1): Pathconf.
_PC_PRIO_IO unistd.h (POSIX.1): Pathconf.
_PC_REC_INCR_XFER_SIZE unistd.h (POSIX.1): Pathconf.
_PC_REC_MAX_XFER_SIZE unistd.h (POSIX.1): Pathconf.
_PC_REC_MIN_XFER_SIZE unistd.h (POSIX.1): Pathconf.
_PC_REC_XFER_ALIGN unistd.h (POSIX.1): Pathconf.
_PC_SOCK_MAXBUF unistd.h (POSIX.1g): Pathconf.
_PC_SYNC_IO unistd.h (POSIX.1): Pathconf.
_PC_VDISABLE unistd.h (POSIX.1): Pathconf.
tcflag_t PENDIN termios.h (BSD): Local Modes.
void perror (const char *message) stdio.h (ISO): Error Messages.
int PF_FILE sys/socket.h (GNU): Local Namespace Details.
int PF_INET sys/socket.h (BSD): Internet Namespace.
int PF_INET6 sys/socket.h (X/Open): Internet Namespace.
int PF_LOCAL sys/socket.h (POSIX): Local Namespace Details.
int PF_UNIX sys/socket.h (BSD): Local Namespace Details.
pid_t sys/types.h (POSIX.1): Process Identification.
int pipe (int filedes[2]) unistd.h (POSIX.1): Creating a Pipe.
int PIPE_BUF limits.h (POSIX.1): Limits for Files.
FILE * popen (const char *command, const char *mode) stdio.h (POSIX.2, SVID, BSD): Pipe to a Subprocess.
_POSIX2_BC_BASE_MAX limits.h (POSIX.2): Utility Minimums.
_POSIX2_BC_DIM_MAX limits.h (POSIX.2): Utility Minimums.
_POSIX2_BC_SCALE_MAX limits.h (POSIX.2): Utility Minimums.
_POSIX2_BC_STRING_MAX limits.h (POSIX.2): Utility Minimums.
int _POSIX2_C_DEV unistd.h (POSIX.2): System Options.
_POSIX2_COLL_WEIGHTS_MAX limits.h (POSIX.2): Utility Minimums.
long int _POSIX2_C_VERSION unistd.h (POSIX.2): Version Supported.
_POSIX2_EQUIV_CLASS_MAX limits.h (POSIX.2): Utility Minimums.
_POSIX2_EXPR_NEST_MAX limits.h (POSIX.2): Utility Minimums.
int _POSIX2_FORT_DEV unistd.h (POSIX.2): System Options.
int _POSIX2_FORT_RUN unistd.h (POSIX.2): System Options.
_POSIX2_LINE_MAX limits.h (POSIX.2): Utility Minimums.
int _POSIX2_LOCALEDEF unistd.h (POSIX.2): System Options.
_POSIX2_RE_DUP_MAX limits.h (POSIX.2): Minimums.
int _POSIX2_SW_DEV unistd.h (POSIX.2): System Options.
_POSIX_AIO_LISTIO_MAX limits.h (POSIX.1): Minimums.
_POSIX_AIO_MAX limits.h (POSIX.1): Minimums.
_POSIX_ARG_MAX limits.h (POSIX.1): Minimums.
_POSIX_CHILD_MAX limits.h (POSIX.1): Minimums.
int _POSIX_CHOWN_RESTRICTED unistd.h (POSIX.1): Options for Files.
_POSIX_C_SOURCE(POSIX.2): Feature Test Macros.
int _POSIX_JOB_CONTROL unistd.h (POSIX.1): System Options.
_POSIX_LINK_MAX limits.h (POSIX.1): File Minimums.
_POSIX_MAX_CANON limits.h (POSIX.1): File Minimums.
_POSIX_MAX_INPUT limits.h (POSIX.1): File Minimums.
int posix_memalign (void **memptr, size_t alignment, size_t size) stdlib.h (POSIX): Aligned Memory Blocks.
_POSIX_NAME_MAX limits.h (POSIX.1): File Minimums.
_POSIX_NGROUPS_MAX limits.h (POSIX.1): Minimums.
int _POSIX_NO_TRUNC unistd.h (POSIX.1): Options for Files.
_POSIX_OPEN_MAX limits.h (POSIX.1): Minimums.
_POSIX_PATH_MAX limits.h (POSIX.1): File Minimums.
_POSIX_PIPE_BUF limits.h (POSIX.1): File Minimums.
POSIX_REC_INCR_XFER_SIZE limits.h (POSIX.1): File Minimums.
POSIX_REC_MAX_XFER_SIZE limits.h (POSIX.1): File Minimums.
POSIX_REC_MIN_XFER_SIZE limits.h (POSIX.1): File Minimums.
POSIX_REC_XFER_ALIGN limits.h (POSIX.1): File Minimums.
int _POSIX_SAVED_IDS unistd.h (POSIX.1): System Options.
_POSIX_SOURCE(POSIX.1): Feature Test Macros.
_POSIX_SSIZE_MAX limits.h (POSIX.1): Minimums.
_POSIX_STREAM_MAX limits.h (POSIX.1): Minimums.
_POSIX_TZNAME_MAX limits.h (POSIX.1): Minimums.
unsigned char _POSIX_VDISABLE unistd.h (POSIX.1): Options for Files.
long int _POSIX_VERSION unistd.h (POSIX.1): Version Supported.
double pow (double base, double power) math.h (ISO): Exponents and Logarithms.
double pow10 (double x) math.h (GNU): Exponents and Logarithms.
float pow10f (float x) math.h (GNU): Exponents and Logarithms.
long double pow10l (long double x) math.h (GNU): Exponents and Logarithms.
float powf (float base, float power) math.h (ISO): Exponents and Logarithms.
long double powl (long double base, long double power) math.h (ISO): Exponents and Logarithms.
ssize_t pread (int filedes, void *buffer, size_t size, off_t offset) unistd.h (Unix98): I/O Primitives.
ssize_t pread64 (int filedes, void *buffer, size_t size, off64_t offset) unistd.h (Unix98): I/O Primitives.
int printf (const char *template, ...) stdio.h (ISO): Formatted Output Functions.
printf_arginfo_function printf.h (GNU): Defining the Output Handler.
printf_function printf.h (GNU): Defining the Output Handler.
int printf_size (FILE *fp, const struct printf_info *info, const void *const *args) printf.h (GNU): Predefined Printf Handlers.
int printf_size_info (const struct printf_info *info, size_t n, int *argtypes) printf.h (GNU): Predefined Printf Handlers.
PRIO_MAX sys/resource.h (BSD): Traditional Scheduling Functions.
PRIO_MIN sys/resource.h (BSD): Traditional Scheduling Functions.
PRIO_PGRP sys/resource.h (BSD): Traditional Scheduling Functions.
PRIO_PROCESS sys/resource.h (BSD): Traditional Scheduling Functions.
PRIO_USER sys/resource.h (BSD): Traditional Scheduling Functions.
char * program_invocation_name errno.h (GNU): Error Messages.
char * program_invocation_short_name errno.h (GNU): Error Messages.
void psignal (int signum, const char *message) signal.h (BSD): Signal Messages.
int pthread_atfork (void (*prepare)(void), void (*parent)(void), void (*child)(void)) pthread.h (POSIX): Threads and Fork.
int pthread_attr_destroy (pthread_attr_t *attr) pthread.h (POSIX): Thread Attributes.
int pthread_attr_getattr (const pthread_attr_t *obj, int *value) pthread.h (POSIX): Thread Attributes.
int pthread_attr_init (pthread_attr_t *attr) pthread.h (POSIX): Thread Attributes.
int pthread_attr_setattr (pthread_attr_t *obj, int value) pthread.h (POSIX): Thread Attributes.
int pthread_cancel (pthread_t thread) pthread.h (POSIX): Basic Thread Operations.
void pthread_cleanup_pop (int execute) pthread.h (POSIX): Cleanup Handlers.
void pthread_cleanup_pop_restore_np (int execute) pthread.h (GNU): Cleanup Handlers.
void pthread_cleanup_push (void (*routine) (void *), void *arg) pthread.h (POSIX): Cleanup Handlers.
void pthread_cleanup_push_defer_np (void (*routine) (void *), void *arg) pthread.h (GNU): Cleanup Handlers.
int pthread_condattr_init (pthread_condattr_t *attr) pthread.h (POSIX): Condition Variables.
int pthread_cond_broadcast (pthread_cond_t *cond) pthread.h (POSIX): Condition Variables.
int pthread_cond_destroy (pthread_cond_t *cond) pthread.h (POSIX): Condition Variables.
int pthread_cond_init (pthread_cond_t *cond, pthread_condattr_t *cond_attr) pthread.h (POSIX): Condition Variables.
int pthread_cond_signal (pthread_cond_t *cond) pthread.h (POSIX): Condition Variables.
int pthread_cond_timedwait (pthread_cond_t *cond, pthread_mutex_t *mutex, const struct timespec *abstime) pthread.h (POSIX): Condition Variables.
int pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex) pthread.h (POSIX): Condition Variables.
int pthread_create (pthread_t * thread, pthread_attr_t * attr, void * (*start_routine)(void *), void * arg) pthread.h (POSIX): Basic Thread Operations.
int pthread_detach (pthread_t th) pthread.h (POSIX): Miscellaneous Thread Functions.
int pthread_equal (pthread_t thread1, pthread_t thread2) pthread.h (POSIX): Miscellaneous Thread Functions.
void pthread_exit (void *retval) pthread.h (POSIX): Basic Thread Operations.
int pthread_getconcurrency () pthread.h (POSIX): Miscellaneous Thread Functions.
int pthread_getschedparam (pthread_t target_thread, int *policy, struct sched_param *param) pthread.h (POSIX): Miscellaneous Thread Functions.
void * pthread_getspecific (pthread_key_t key) pthread.h (POSIX): Thread-Specific Data.
int pthread_join (pthread_t th, void **thread_return) pthread.h (POSIX): Basic Thread Operations.
int pthread_key_create (pthread_key_t *key, void (*destr_function) (void *)) pthread.h (POSIX): Thread-Specific Data.
int pthread_key_delete (pthread_key_t key) pthread.h (POSIX): Thread-Specific Data.
int pthread_kill (pthread_t thread, int signo) pthread.h (POSIX): Threads and Signal Handling.
void pthread_kill_other_threads_np (void) pthread.h (GNU): Miscellaneous Thread Functions.
int pthread_mutexattr_destroy (pthread_mutexattr_t *attr) pthread.h (POSIX): Mutexes.
int pthread_mutexattr_gettype (const pthread_mutexattr_t *attr, int *type) pthread.h (POSIX): Mutexes.
int pthread_mutexattr_init (pthread_mutexattr_t *attr) pthread.h (POSIX): Mutexes.
int pthread_mutexattr_settype (pthread_mutexattr_t *attr, int type) pthread.h (POSIX): Mutexes.
int pthread_mutex_destroy (pthread_mutex_t *mutex) pthread.h (POSIX): Mutexes.
int pthread_mutex_init (pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr) pthread.h (POSIX): Mutexes.
int pthread_mutex_lock (pthread_mutex_t *mutex)) pthread.h (POSIX): Mutexes.
int pthread_mutex_timedlock (pthread_mutex_t *mutex, const struct timespec *abstime) pthread.h (POSIX): Mutexes.
int pthread_mutex_trylock (pthread_mutex_t *mutex) pthread.h (POSIX): Mutexes.
int pthread_mutex_unlock (pthread_mutex_t *mutex) pthread.h (POSIX): Mutexes.
int pthread_once (pthread_once_t *once_control, void (*init_routine) (void)) pthread.h (POSIX): Miscellaneous Thread Functions.
pthread_t pthread_self (void) pthread.h (POSIX): Miscellaneous Thread Functions.
int pthread_setcancelstate (int state, int *oldstate) pthread.h (POSIX): Cancellation.
int pthread_setcanceltype (int type, int *oldtype) pthread.h (POSIX): Cancellation.
int pthread_setconcurrency (int level) pthread.h (POSIX): Miscellaneous Thread Functions.
int pthread_setschedparam (pthread_t target_thread, int policy, const struct sched_param *param) pthread.h (POSIX): Miscellaneous Thread Functions.
int pthread_setspecific (pthread_key_t key, const void *pointer) pthread.h (POSIX): Thread-Specific Data.
int pthread_sigmask (int how, const sigset_t *newmask, sigset_t *oldmask) pthread.h (POSIX): Threads and Signal Handling.
void pthread_testcancel (void) pthread.h (POSIX): Cancellation.
char * P_tmpdir stdio.h (SVID): Temporary Files.
ptrdiff_t stddef.h (ISO): Important Data Types.
char * ptsname (int filedes) stdlib.h (SVID, XPG4.2): Allocation.
int ptsname_r (int filedes, char *buf, size_t len) stdlib.h (GNU): Allocation.
int putc (int c, FILE *stream) stdio.h (ISO): Simple Output.
int putchar (int c) stdio.h (ISO): Simple Output.
int putchar_unlocked (int c) stdio.h (POSIX): Simple Output.
int putc_unlocked (int c, FILE *stream) stdio.h (POSIX): Simple Output.
int putenv (char *string) stdlib.h (SVID): Environment Access.
int putpwent (const struct passwd *p, FILE *stream) pwd.h (SVID): Writing a User Entry.
int puts (const char *s) stdio.h (ISO): Simple Output.
struct utmp * pututline (const struct utmp *utmp) utmp.h (SVID): Manipulating the Database.
struct utmpx * pututxline (const struct utmpx *utmp) utmpx.h (XPG4.2): XPG Functions.
int putw (int w, FILE *stream) stdio.h (SVID): Simple Output.
wint_t putwc (wchar_t wc, FILE *stream) wchar.h (ISO): Simple Output.
wint_t putwchar (wchar_t wc) wchar.h (ISO): Simple Output.
wint_t putwchar_unlocked (wchar_t wc) wchar.h (GNU): Simple Output.
wint_t putwc_unlocked (wchar_t wc, FILE *stream) wchar.h (GNU): Simple Output.
ssize_t pwrite (int filedes, const void *buffer, size_t size, off_t offset) unistd.h (Unix98): I/O Primitives.
ssize_t pwrite64 (int filedes, const void *buffer, size_t size, off64_t offset) unistd.h (Unix98): I/O Primitives.
char * qecvt (long double value, int ndigit, int *decpt, int *neg) stdlib.h (GNU): System V Number Conversion.
char * qecvt_r (long double value, int ndigit, int *decpt, int *neg, char *buf, size_t len) stdlib.h (GNU): System V Number Conversion.
char * qfcvt (long double value, int ndigit, int *decpt, int *neg) stdlib.h (GNU): System V Number Conversion.
char * qfcvt_r (long double value, int ndigit, int *decpt, int *neg, char *buf, size_t len) stdlib.h (GNU): System V Number Conversion.
char * qgcvt (long double value, int ndigit, char *buf) stdlib.h (GNU): System V Number Conversion.
void qsort (void *array, size_t count, size_t size, comparison_fn_t compare) stdlib.h (ISO): Array Sort Function.
int raise (int signum) signal.h (ISO): Signaling Yourself.
int rand (void) stdlib.h (ISO): ISO Random.
int RAND_MAX stdlib.h (ISO): ISO Random.
long int random (void) stdlib.h (BSD): BSD Random.
int random_r (struct random_data *restrict buf, int32_t *restrict result) stdlib.h (GNU): BSD Random.
int rand_r (unsigned int *seed) stdlib.h (POSIX.1): ISO Random.
void * rawmemchr (const void *block, int c) string.h (GNU): Search Functions.
ssize_t read (int filedes, void *buffer, size_t size) unistd.h (POSIX.1): I/O Primitives.
struct dirent * readdir (DIR *dirstream) dirent.h (POSIX.1): Reading/Closing Directory.
struct dirent64 * readdir64 (DIR *dirstream) dirent.h (LFS): Reading/Closing Directory.
int readdir64_r (DIR *dirstream, struct dirent64 *entry, struct dirent64 **result) dirent.h (LFS): Reading/Closing Directory.
int readdir_r (DIR *dirstream, struct dirent *entry, struct dirent **result) dirent.h (GNU): Reading/Closing Directory.
int readlink (const char *filename, char *buffer, size_t size) unistd.h (BSD): Symbolic Links.
ssize_t readv (int filedes, const struct iovec *vector, int count) sys/uio.h (BSD): Scatter-Gather.
void * realloc (void *ptr, size_t newsize) malloc.h, stdlib.h (ISO): Changing Block Size.
__realloc_hook malloc.h (GNU): Hooks for Malloc.
char * realpath (const char *restrict name, char *restrict resolved) stdlib.h (XPG): Symbolic Links.
int recv (int socket, void *buffer, size_t size, int flags) sys/socket.h (BSD): Receiving Data.
int recvfrom (int socket, void *buffer, size_t size, int flags, struct sockaddr *addr, socklen_t *length-ptr) sys/socket.h (BSD): Receiving Datagrams.
int recvmsg (int socket, struct msghdr *message, int flags) sys/socket.h (BSD): Receiving Datagrams.
int RE_DUP_MAX limits.h (POSIX.2): General Limits.
_REENTRANT(GNU): Feature Test Macros.
REG_BADBR regex.h (POSIX.2): POSIX Regexp Compilation.
REG_BADPAT regex.h (POSIX.2): POSIX Regexp Compilation.
REG_BADRPT regex.h (POSIX.2): POSIX Regexp Compilation.
int regcomp (regex_t *compiled, const char *pattern, int cflags) regex.h (POSIX.2): POSIX Regexp Compilation.
REG_EBRACE regex.h (POSIX.2): POSIX Regexp Compilation.
REG_EBRACK regex.h (POSIX.2): POSIX Regexp Compilation.
REG_ECOLLATE regex.h (POSIX.2): POSIX Regexp Compilation.
REG_ECTYPE regex.h (POSIX.2): POSIX Regexp Compilation.
REG_EESCAPE regex.h (POSIX.2): POSIX Regexp Compilation.
REG_EPAREN regex.h (POSIX.2): POSIX Regexp Compilation.
REG_ERANGE regex.h (POSIX.2): POSIX Regexp Compilation.
size_t regerror (int errcode, regex_t *compiled, char *buffer, size_t length) regex.h (POSIX.2): Regexp Cleanup.
REG_ESPACE regex.h (POSIX.2): Matching POSIX Regexps.
REG_ESPACE regex.h (POSIX.2): POSIX Regexp Compilation.
REG_ESUBREG regex.h (POSIX.2): POSIX Regexp Compilation.
int regexec (regex_t *compiled, char *string, size_t nmatch, regmatch_t matchptr[], int eflags) regex.h (POSIX.2): Matching POSIX Regexps.
regex_t regex.h (POSIX.2): POSIX Regexp Compilation.
REG_EXTENDED regex.h (POSIX.2): Flags for POSIX Regexps.
void regfree (regex_t *compiled) regex.h (POSIX.2): Regexp Cleanup.
REG_ICASE regex.h (POSIX.2): Flags for POSIX Regexps.
int register_printf_function (int spec, printf_function handler-function, printf_arginfo_function arginfo-function) printf.h (GNU): Registering New Conversions.
regmatch_t regex.h (POSIX.2): Regexp Subexpressions.
REG_NEWLINE regex.h (POSIX.2): Flags for POSIX Regexps.
REG_NOMATCH regex.h (POSIX.2): Matching POSIX Regexps.
REG_NOSUB regex.h (POSIX.2): Flags for POSIX Regexps.
REG_NOTBOL regex.h (POSIX.2): Matching POSIX Regexps.
REG_NOTEOL regex.h (POSIX.2): Matching POSIX Regexps.
regoff_t regex.h (POSIX.2): Regexp Subexpressions.
double remainder (double numerator, double denominator) math.h (BSD): Remainder Functions.
float remainderf (float numerator, float denominator) math.h (BSD): Remainder Functions.
long double remainderl (long double numerator, long double denominator) math.h (BSD): Remainder Functions.
int remove (const char *filename) stdio.h (ISO): Deleting Files.
int rename (const char *oldname, const char *newname) stdio.h (ISO): Renaming Files.
void rewind (FILE *stream) stdio.h (ISO): File Positioning.
void rewinddir (DIR *dirstream) dirent.h (POSIX.1): Random Access Directory.
char * rindex (const char *string, int c) string.h (BSD): Search Functions.
double rint (double x) math.h (ISO): Rounding Functions.
float rintf (float x) math.h (ISO): Rounding Functions.
long double rintl (long double x) math.h (ISO): Rounding Functions.
int RLIM_INFINITY sys/resource.h (BSD): Limits on Resources.
RLIMIT_AS sys/resource.h (Unix98): Limits on Resources.
RLIMIT_CORE sys/resource.h (BSD): Limits on Resources.
RLIMIT_CPU sys/resource.h (BSD): Limits on Resources.
RLIMIT_DATA sys/resource.h (BSD): Limits on Resources.
RLIMIT_FSIZE sys/resource.h (BSD): Limits on Resources.
RLIMIT_MEMLOCK sys/resource.h (BSD): Limits on Resources.
RLIMIT_NOFILE sys/resource.h (BSD): Limits on Resources.
RLIMIT_NPROC sys/resource.h (BSD): Limits on Resources.
RLIMIT_RSS sys/resource.h (BSD): Limits on Resources.
RLIMIT_STACK sys/resource.h (BSD): Limits on Resources.
RLIM_NLIMITS sys/resource.h (BSD): Limits on Resources.
int rmdir (const char *filename) unistd.h (POSIX.1): Deleting Files.
int R_OK unistd.h (POSIX.1): Testing File Access.
double round (double x) math.h (ISO): Rounding Functions.
float roundf (float x) math.h (ISO): Rounding Functions.
long double roundl (long double x) math.h (ISO): Rounding Functions.
int rpmatch (const char *response) stdlib.h (stdlib.h): Yes-or-No Questions.
RUN_LVL utmp.h (SVID): Manipulating the Database.
RUN_LVL utmpx.h (XPG4.2): XPG Functions.
RUSAGE_CHILDREN sys/resource.h (BSD): Resource Usage.
RUSAGE_SELF sys/resource.h (BSD): Resource Usage.
int SA_NOCLDSTOP signal.h (POSIX.1): Flags for Sigaction.
int SA_ONSTACK signal.h (BSD): Flags for Sigaction.
int SA_RESTART signal.h (BSD): Flags for Sigaction.
int sbrk (ptrdiff_t delta) unistd.h (BSD): Resizing the Data Segment.
_SC_2_C_DEV unistd.h (POSIX.2): Constants for Sysconf.
_SC_2_FORT_DEV unistd.h (POSIX.2): Constants for Sysconf.
_SC_2_FORT_RUN unistd.h (POSIX.2): Constants for Sysconf.
_SC_2_LOCALEDEF unistd.h (POSIX.2): Constants for Sysconf.
_SC_2_SW_DEV unistd.h (POSIX.2): Constants for Sysconf.
_SC_2_VERSION unistd.h (POSIX.2): Constants for Sysconf.
_SC_AIO_LISTIO_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_AIO_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_AIO_PRIO_DELTA_MAX unistd.h (POSIX.1): Constants for Sysconf.
double scalb (double value, int exponent) math.h (BSD): Normalization Functions.
float scalbf (float value, int exponent) math.h (BSD): Normalization Functions.
long double scalbl (long double value, int exponent) math.h (BSD): Normalization Functions.
long long int scalbln (double x, long int n) math.h (BSD): Normalization Functions.
long long int scalblnf (float x, long int n) math.h (BSD): Normalization Functions.
long long int scalblnl (long double x, long int n) math.h (BSD): Normalization Functions.
long long int scalbn (double x, int n) math.h (BSD): Normalization Functions.
long long int scalbnf (float x, int n) math.h (BSD): Normalization Functions.
long long int scalbnl (long double x, int n) math.h (BSD): Normalization Functions.
int scandir (const char *dir, struct dirent ***namelist, int (*selector) (const struct dirent *), int (*cmp) (const void *, const void *)) dirent.h (BSD/SVID): Scanning Directory Content.
int scandir64 (const char *dir, struct dirent64 ***namelist, int (*selector) (const struct dirent64 *), int (*cmp) (const void *, const void *)) dirent.h (GNU): Scanning Directory Content.
int scanf (const char *template, ...) stdio.h (ISO): Formatted Input Functions.
_SC_ARG_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_ASYNCHRONOUS_IO unistd.h (POSIX.1): Constants for Sysconf.
_SC_ATEXIT_MAX unistd.h (GNU): Constants for Sysconf.
_SC_AVPHYS_PAGES unistd.h (GNU): Constants for Sysconf.
_SC_BC_BASE_MAX unistd.h (POSIX.2): Constants for Sysconf.
_SC_BC_DIM_MAX unistd.h (POSIX.2): Constants for Sysconf.
_SC_BC_SCALE_MAX unistd.h (POSIX.2): Constants for Sysconf.
_SC_BC_STRING_MAX unistd.h (POSIX.2): Constants for Sysconf.
_SC_CHAR_BIT unistd.h (X/Open): Constants for Sysconf.
_SC_CHARCLASS_NAME_MAX unistd.h (GNU): Constants for Sysconf.
_SC_CHAR_MAX unistd.h (X/Open): Constants for Sysconf.
_SC_CHAR_MIN unistd.h (X/Open): Constants for Sysconf.
_SC_CHILD_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_CLK_TCK unistd.h (POSIX.1): Constants for Sysconf.
_SC_COLL_WEIGHTS_MAX unistd.h (POSIX.2): Constants for Sysconf.
_SC_DELAYTIMER_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_EQUIV_CLASS_MAX unistd.h (POSIX.2): Constants for Sysconf.
_SC_EXPR_NEST_MAX unistd.h (POSIX.2): Constants for Sysconf.
_SC_FSYNC unistd.h (POSIX.1): Constants for Sysconf.
_SC_GETGR_R_SIZE_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_GETPW_R_SIZE_MAX unistd.h (POSIX.1): Constants for Sysconf.
SCHAR_MAX limits.h (ISO): Range of Type.
SCHAR_MIN limits.h (ISO): Range of Type.
int sched_getparam (pid_t pid, const struct sched_param *param) sched.h (POSIX): Basic Scheduling Functions.
int sched_get_priority_max (int *policy); sched.h (POSIX): Basic Scheduling Functions.
int sched_get_priority_min (int *policy); sched.h (POSIX): Basic Scheduling Functions.
int sched_getscheduler (pid_t pid) sched.h (POSIX): Basic Scheduling Functions.
int sched_rr_get_interval (pid_t pid, struct timespec *interval) sched.h (POSIX): Basic Scheduling Functions.
int sched_setparam (pid_t pid, const struct sched_param *param) sched.h (POSIX): Basic Scheduling Functions.
int sched_setscheduler (pid_t pid, int policy, const struct sched_param *param) sched.h (POSIX): Basic Scheduling Functions.
int sched_yield (void) sched.h (POSIX): Basic Scheduling Functions.
_SC_INT_MAX unistd.h (X/Open): Constants for Sysconf.
_SC_INT_MIN unistd.h (X/Open): Constants for Sysconf.
_SC_JOB_CONTROL unistd.h (POSIX.1): Constants for Sysconf.
_SC_LINE_MAX unistd.h (POSIX.2): Constants for Sysconf.
_SC_LOGIN_NAME_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_LONG_BIT unistd.h (X/Open): Constants for Sysconf.
_SC_MAPPED_FILES unistd.h (POSIX.1): Constants for Sysconf.
_SC_MB_LEN_MAX unistd.h (X/Open): Constants for Sysconf.
_SC_MEMLOCK unistd.h (POSIX.1): Constants for Sysconf.
_SC_MEMLOCK_RANGE unistd.h (POSIX.1): Constants for Sysconf.
_SC_MEMORY_PROTECTION unistd.h (POSIX.1): Constants for Sysconf.
_SC_MESSAGE_PASSING unistd.h (POSIX.1): Constants for Sysconf.
_SC_MQ_OPEN_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_MQ_PRIO_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_NGROUPS_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_NL_ARGMAX unistd.h (X/Open): Constants for Sysconf.
_SC_NL_LANGMAX unistd.h (X/Open): Constants for Sysconf.
_SC_NL_MSGMAX unistd.h (X/Open): Constants for Sysconf.
_SC_NL_NMAX unistd.h (X/Open): Constants for Sysconf.
_SC_NL_SETMAX unistd.h (X/Open): Constants for Sysconf.
_SC_NL_TEXTMAX unistd.h (X/Open): Constants for Sysconf.
_SC_NPROCESSORS_CONF unistd.h (GNU): Constants for Sysconf.
_SC_NPROCESSORS_ONLN unistd.h (GNU): Constants for Sysconf.
_SC_NZERO unistd.h (X/Open): Constants for Sysconf.
_SC_OPEN_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_PAGESIZE unistd.h (GNU): Constants for Sysconf.
_SC_PHYS_PAGES unistd.h (GNU): Constants for Sysconf.
_SC_PII unistd.h (POSIX.1g): Constants for Sysconf.
_SC_PII_INTERNET unistd.h (POSIX.1g): Constants for Sysconf.
_SC_PII_INTERNET_DGRAM unistd.h (POSIX.1g): Constants for Sysconf.
_SC_PII_INTERNET_STREAM unistd.h (POSIX.1g): Constants for Sysconf.
_SC_PII_OSI unistd.h (POSIX.1g): Constants for Sysconf.
_SC_PII_OSI_CLTS unistd.h (POSIX.1g): Constants for Sysconf.
_SC_PII_OSI_COTS unistd.h (POSIX.1g): Constants for Sysconf.
_SC_PII_OSI_M unistd.h (POSIX.1g): Constants for Sysconf.
_SC_PII_SOCKET unistd.h (POSIX.1g): Constants for Sysconf.
_SC_PII_XTI unistd.h (POSIX.1g): Constants for Sysconf.
_SC_PRIORITIZED_IO unistd.h (POSIX.1): Constants for Sysconf.
_SC_PRIORITY_SCHEDULING unistd.h (POSIX.1): Constants for Sysconf.
_SC_REALTIME_SIGNALS unistdh.h (POSIX.1): Constants for Sysconf.
_SC_RTSIG_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_SAVED_IDS unistd.h (POSIX.1): Constants for Sysconf.
_SC_SCHAR_MAX unistd.h (X/Open): Constants for Sysconf.
_SC_SCHAR_MIN unistd.h (X/Open): Constants for Sysconf.
_SC_SELECT unistd.h (POSIX.1g): Constants for Sysconf.
_SC_SEMAPHORES unistd.h (POSIX.1): Constants for Sysconf.
_SC_SEM_NSEMS_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_SEM_VALUE_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_SHARED_MEMORY_OBJECTS unistd.h (POSIX.1): Constants for Sysconf.
_SC_SHRT_MAX unistd.h (X/Open): Constants for Sysconf.
_SC_SHRT_MIN unistd.h (X/Open): Constants for Sysconf.
_SC_SIGQUEUE_MAX unistd.h (POSIX.1): Constants for Sysconf.
SC_SSIZE_MAX unistd.h (X/Open): Constants for Sysconf.
_SC_STREAM_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_SYNCHRONIZED_IO unistd.h (POSIX.1): Constants for Sysconf.
_SC_THREAD_ATTR_STACKADDR unistd.h (POSIX.1): Constants for Sysconf.
_SC_THREAD_ATTR_STACKSIZE unistd.h (POSIX.1): Constants for Sysconf.
_SC_THREAD_DESTRUCTOR_ITERATIONS unistd.h (POSIX.1): Constants for Sysconf.
_SC_THREAD_KEYS_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_THREAD_PRIO_INHERIT unistd.h (POSIX.1): Constants for Sysconf.
_SC_THREAD_PRIO_PROTECT unistd.h (POSIX.1): Constants for Sysconf.
_SC_THREAD_PRIORITY_SCHEDULING unistd.h (POSIX.1): Constants for Sysconf.
_SC_THREAD_PROCESS_SHARED unistd.h (POSIX.1): Constants for Sysconf.
_SC_THREADS unistd.h (POSIX.1): Constants for Sysconf.
_SC_THREAD_SAFE_FUNCTIONS unistd.h (POSIX.1): Constants for Sysconf.
_SC_THREAD_STACK_MIN unistd.h (POSIX.1): Constants for Sysconf.
_SC_THREAD_THREADS_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_TIMER_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_TIMERS unistd.h (POSIX.1): Constants for Sysconf.
_SC_T_IOV_MAX unistd.h (POSIX.1g): Constants for Sysconf.
_SC_TTY_NAME_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_TZNAME_MAX unistd.h (POSIX.1): Constants for Sysconf.
_SC_UCHAR_MAX unistd.h (X/Open): Constants for Sysconf.
_SC_UINT_MAX unistd.h (X/Open): Constants for Sysconf.
_SC_UIO_MAXIOV unistd.h (POSIX.1g): Constants for Sysconf.
_SC_ULONG_MAX unistd.h (X/Open): Constants for Sysconf.
_SC_USHRT_MAX unistd.h (X/Open): Constants for Sysconf.
_SC_VERSION unistd.h (POSIX.1): Constants for Sysconf.
_SC_VERSION unistd.h (POSIX.2): Constants for Sysconf.
_SC_WORD_BIT unistd.h (X/Open): Constants for Sysconf.
_SC_XOPEN_CRYPT unistd.h (X/Open): Constants for Sysconf.
_SC_XOPEN_ENH_I18N unistd.h (X/Open): Constants for Sysconf.
_SC_XOPEN_LEGACY unistd.h (X/Open): Constants for Sysconf.
_SC_XOPEN_REALTIME unistd.h (X/Open): Constants for Sysconf.
_SC_XOPEN_REALTIME_THREADS unistd.h (X/Open): Constants for Sysconf.
_SC_XOPEN_SHM unistd.h (X/Open): Constants for Sysconf.
_SC_XOPEN_UNIX unistd.h (X/Open): Constants for Sysconf.
_SC_XOPEN_VERSION unistd.h (X/Open): Constants for Sysconf.
_SC_XOPEN_XCU_VERSION unistd.h (X/Open): Constants for Sysconf.
_SC_XOPEN_XPG2 unistd.h (X/Open): Constants for Sysconf.
_SC_XOPEN_XPG3 unistd.h (X/Open): Constants for Sysconf.
_SC_XOPEN_XPG4 unistd.h (X/Open): Constants for Sysconf.
unsigned short int * seed48 (unsigned short int seed16v[3]) stdlib.h (SVID): SVID Random.
int seed48_r (unsigned short int seed16v[3], struct drand48_data *buffer) stdlib.h (GNU): SVID Random.
int SEEK_CUR stdio.h (ISO): File Positioning.
void seekdir (DIR *dirstream, off_t pos) dirent.h (BSD): Random Access Directory.
int SEEK_END stdio.h (ISO): File Positioning.
int SEEK_SET stdio.h (ISO): File Positioning.
int select (int nfds, fd_set *read-fds, fd_set *write-fds, fd_set *except-fds, struct timeval *timeout) sys/types.h (BSD): Waiting for I/O.
int sem_destroy (sem_t * sem) semaphore.h (POSIX): POSIX Semaphores.
int sem_getvalue (sem_t * sem, int * sval) semaphore.h (POSIX): POSIX Semaphores.
int sem_init (sem_t *sem, int pshared, unsigned int value) semaphore.h (POSIX): POSIX Semaphores.
int sem_post (sem_t * sem) semaphore.h (POSIX): POSIX Semaphores.
int sem_trywait (sem_t * sem) semaphore.h (POSIX): POSIX Semaphores.
int sem_wait (sem_t * sem) semaphore.h (POSIX): POSIX Semaphores.
int send (int socket, void *buffer, size_t size, int flags) sys/socket.h (BSD): Sending Data.
int sendmsg (int socket, const struct msghdr *message, int flags) sys/socket.h (BSD): Receiving Datagrams.
int sendto (int socket, void *buffer. size_t size, int flags, struct sockaddr *addr, socklen_t length) sys/socket.h (BSD): Sending Datagrams.
void setbuf (FILE *stream, char *buf) stdio.h (ISO): Controlling Buffering.
void setbuffer (FILE *stream, char *buf, size_t size) stdio.h (BSD): Controlling Buffering.
int setcontext (const ucontext_t *ucp) ucontext.h (SVID): System V contexts.
int setdomainname (const char *name, size_t length) unistd.h (???): Host Identification.
int setegid (gid_t newgid) unistd.h (POSIX.1): Setting Groups.
int setenv (const char *name, const char *value, int replace) stdlib.h (BSD): Environment Access.
int seteuid (uid_t neweuid) unistd.h (POSIX.1): Setting User ID.
int setfsent (void) fstab.h (BSD): fstab.
int setgid (gid_t newgid) unistd.h (POSIX.1): Setting Groups.
void setgrent (void) grp.h (SVID, BSD): Scanning All Groups.
int setgroups (size_t count, gid_t *groups) grp.h (BSD): Setting Groups.
void sethostent (int stayopen) netdb.h (BSD): Host Names.
int sethostid (long int id) unistd.h (BSD): Host Identification.
int sethostname (const char *name, size_t length) unistd.h (BSD): Host Identification.
int setitimer (int which, struct itimerval *new, struct itimerval *old) sys/time.h (BSD): Setting an Alarm.
int setjmp (jmp_buf state) setjmp.h (ISO): Non-Local Details.
void setkey (const char *key) crypt.h (BSD, SVID): DES Encryption.
void setkey_r (const char *key, struct crypt_data * data) crypt.h (GNU): DES Encryption.
void setlinebuf (FILE *stream) stdio.h (BSD): Controlling Buffering.
char * setlocale (int category, const char *locale) locale.h (ISO): Setting the Locale.
int setlogmask (int mask) syslog.h (BSD): setlogmask.
FILE * setmntent (const char *file, const char *mode) mntent.h (BSD): mtab.
void setnetent (int stayopen) netdb.h (BSD): Networks Database.
int setnetgrent (const char *netgroup) netdb.h (BSD): Lookup Netgroup.
int setpgid (pid_t pid, pid_t pgid) unistd.h (POSIX.1): Process Group Functions.
int setpgrp (pid_t pid, pid_t pgid) unistd.h (BSD): Process Group Functions.
int setpriority (int class, int id, int niceval) sys/resource.h (BSD,POSIX): Traditional Scheduling Functions.
void setprotoent (int stayopen) netdb.h (BSD): Protocols Database.
void setpwent (void) pwd.h (SVID, BSD): Scanning All Users.
int setregid (gid_t rgid, gid_t egid) unistd.h (BSD): Setting Groups.
int setreuid (uid_t ruid, uid_t euid) unistd.h (BSD): Setting User ID.
int setrlimit (int resource, const struct rlimit *rlp) sys/resource.h (BSD): Limits on Resources.
int setrlimit64 (int resource, const struct rlimit64 *rlp) sys/resource.h (Unix98): Limits on Resources.
void setservent (int stayopen) netdb.h (BSD): Services Database.
pid_t setsid (void) unistd.h (POSIX.1): Process Group Functions.
int setsockopt (int socket, int level, int optname, void *optval, socklen_t optlen) sys/socket.h (BSD): Socket Option Functions.
void * setstate (void *state) stdlib.h (BSD): BSD Random.
int setstate_r (char *restrict statebuf, struct random_data *restrict buf) stdlib.h (GNU): BSD Random.
int settimeofday (const struct timeval *tp, const struct timezone *tzp) sys/time.h (BSD): High-Resolution Calendar.
int setuid (uid_t newuid) unistd.h (POSIX.1): Setting User ID.
void setutent (void) utmp.h (SVID): Manipulating the Database.
void setutxent (void) utmpx.h (XPG4.2): XPG Functions.
int setvbuf (FILE *stream, char *buf, int mode, size_t size) stdio.h (ISO): Controlling Buffering.
SHRT_MAX limits.h (ISO): Range of Type.
SHRT_MIN limits.h (ISO): Range of Type.
int shutdown (int socket, int how) sys/socket.h (BSD): Closing a Socket.
S_IEXEC sys/stat.h (BSD): Permission Bits.
S_IFBLK sys/stat.h (BSD): Testing File Type.
S_IFCHR sys/stat.h (BSD): Testing File Type.
S_IFDIR sys/stat.h (BSD): Testing File Type.
S_IFIFO sys/stat.h (BSD): Testing File Type.
S_IFLNK sys/stat.h (BSD): Testing File Type.
int S_IFMT sys/stat.h (BSD): Testing File Type.
S_IFREG sys/stat.h (BSD): Testing File Type.
S_IFSOCK sys/stat.h (BSD): Testing File Type.
int SIGABRT signal.h (ISO): Program Error Signals.
int sigaction (int signum, const struct sigaction *restrict action, struct sigaction *restrict old-action) signal.h (POSIX.1): Advanced Signal Handling.
int sigaddset (sigset_t *set, int signum) signal.h (POSIX.1): Signal Sets.
int SIGALRM signal.h (POSIX.1): Alarm Signals.
int sigaltstack (const stack_t *restrict stack, stack_t *restrict oldstack) signal.h (XPG): Signal Stack.
sig_atomic_t signal.h (ISO): Atomic Types.
SIG_BLOCK signal.h (POSIX.1): Process Signal Mask.
int sigblock (int mask) signal.h (BSD): Blocking in BSD.
int SIGBUS signal.h (BSD): Program Error Signals.
int SIGCHLD signal.h (POSIX.1): Job Control Signals.
int SIGCLD signal.h (SVID): Job Control Signals.
int SIGCONT signal.h (POSIX.1): Job Control Signals.
int sigdelset (sigset_t *set, int signum) signal.h (POSIX.1): Signal Sets.
int sigemptyset (sigset_t *set) signal.h (POSIX.1): Signal Sets.
int SIGEMT signal.h (BSD): Program Error Signals.
sighandler_t SIG_ERR signal.h (ISO): Basic Signal Handling.
int sigfillset (sigset_t *set) signal.h (POSIX.1): Signal Sets.
int SIGFPE signal.h (ISO): Program Error Signals.
sighandler_t signal.h (GNU): Basic Signal Handling.
int SIGHUP signal.h (POSIX.1): Termination Signals.
int SIGILL signal.h (ISO): Program Error Signals.
int SIGINFO signal.h (BSD): Miscellaneous Signals.
int SIGINT signal.h (ISO): Termination Signals.
int siginterrupt (int signum, int failflag) signal.h (BSD): BSD Handler.
int SIGIO signal.h (BSD): Asynchronous I/O Signals.
int SIGIOT signal.h (Unix): Program Error Signals.
int sigismember (const sigset_t *set, int signum) signal.h (POSIX.1): Signal Sets.
sigjmp_buf setjmp.h (POSIX.1): Non-Local Exits and Signals.
int SIGKILL signal.h (POSIX.1): Termination Signals.
void siglongjmp (sigjmp_buf state, int value) setjmp.h (POSIX.1): Non-Local Exits and Signals.
int SIGLOST signal.h (GNU): Operation Error Signals.
int sigmask (int signum) signal.h (BSD): Blocking in BSD.
sighandler_t signal (int signum, sighandler_t action) signal.h (ISO): Basic Signal Handling.
int signbit (float-typex) math.h (ISO): FP Bit Twiddling.
long long int significand (double x) math.h (BSD): Normalization Functions.
long long int significandf (float x) math.h (BSD): Normalization Functions.
long long int significandl (long double x) math.h (BSD): Normalization Functions.
int sigpause (int mask) signal.h (BSD): Blocking in BSD.
int sigpending (sigset_t *set) signal.h (POSIX.1): Checking for Pending Signals.
int SIGPIPE signal.h (POSIX.1): Operation Error Signals.
int SIGPOLL signal.h (SVID): Asynchronous I/O Signals.
int sigprocmask (int how, const sigset_t *restrict set, sigset_t *restrict oldset) signal.h (POSIX.1): Process Signal Mask.
int SIGPROF signal.h (BSD): Alarm Signals.
int SIGQUIT signal.h (POSIX.1): Termination Signals.
int SIGSEGV signal.h (ISO): Program Error Signals.
int sigsetjmp (sigjmp_buf state, int savesigs) setjmp.h (POSIX.1): Non-Local Exits and Signals.
SIG_SETMASK signal.h (POSIX.1): Process Signal Mask.
int sigsetmask (int mask) signal.h (BSD): Blocking in BSD.
sigset_t signal.h (POSIX.1): Signal Sets.
int sigstack (const struct sigstack *stack, struct sigstack *oldstack) signal.h (BSD): Signal Stack.
int SIGSTOP signal.h (POSIX.1): Job Control Signals.
int sigsuspend (const sigset_t *set) signal.h (POSIX.1): Sigsuspend.
int SIGSYS signal.h (Unix): Program Error Signals.
int SIGTERM signal.h (ISO): Termination Signals.
int SIGTRAP signal.h (BSD): Program Error Signals.
int SIGTSTP signal.h (POSIX.1): Job Control Signals.
int SIGTTIN signal.h (POSIX.1): Job Control Signals.
int SIGTTOU signal.h (POSIX.1): Job Control Signals.
SIG_UNBLOCK signal.h (POSIX.1): Process Signal Mask.
int SIGURG signal.h (BSD): Asynchronous I/O Signals.
int SIGUSR1 signal.h (POSIX.1): Miscellaneous Signals.
int SIGUSR2 signal.h (POSIX.1): Miscellaneous Signals.
int sigvec (int signum, const struct sigvec *action,struct sigvec *old-action) signal.h (BSD): BSD Handler.
int SIGVTALRM signal.h (BSD): Alarm Signals.
int sigwait (const sigset_t *set, int *sig) pthread.h (POSIX): Threads and Signal Handling.
int SIGWINCH signal.h (BSD): Miscellaneous Signals.
int SIGXCPU signal.h (BSD): Operation Error Signals.
int SIGXFSZ signal.h (BSD): Operation Error Signals.
double sin (double x) math.h (ISO): Trig Functions.
void sincos (double x, double *sinx, double *cosx) math.h (GNU): Trig Functions.
void sincosf (float x, float *sinx, float *cosx) math.h (GNU): Trig Functions.
void sincosl (long double x, long double *sinx, long double *cosx) math.h (GNU): Trig Functions.
float sinf (float x) math.h (ISO): Trig Functions.
double sinh (double x) math.h (ISO): Hyperbolic Functions.
float sinhf (float x) math.h (ISO): Hyperbolic Functions.
long double sinhl (long double x) math.h (ISO): Hyperbolic Functions.
long double sinl (long double x) math.h (ISO): Trig Functions.
S_IREAD sys/stat.h (BSD): Permission Bits.
S_IRGRP sys/stat.h (POSIX.1): Permission Bits.
S_IROTH sys/stat.h (POSIX.1): Permission Bits.
S_IRUSR sys/stat.h (POSIX.1): Permission Bits.
S_IRWXG sys/stat.h (POSIX.1): Permission Bits.
S_IRWXO sys/stat.h (POSIX.1): Permission Bits.
S_IRWXU sys/stat.h (POSIX.1): Permission Bits.
int S_ISBLK (mode_t m) sys/stat.h (POSIX): Testing File Type.
int S_ISCHR (mode_t m) sys/stat.h (POSIX): Testing File Type.
int S_ISDIR (mode_t m) sys/stat.h (POSIX): Testing File Type.
int S_ISFIFO (mode_t m) sys/stat.h (POSIX): Testing File Type.
S_ISGID sys/stat.h (POSIX): Permission Bits.
int S_ISLNK (mode_t m) sys/stat.h (GNU): Testing File Type.
int S_ISREG (mode_t m) sys/stat.h (POSIX): Testing File Type.
int S_ISSOCK (mode_t m) sys/stat.h (GNU): Testing File Type.
S_ISUID sys/stat.h (POSIX): Permission Bits.
S_ISVTX sys/stat.h (BSD): Permission Bits.
S_IWGRP sys/stat.h (POSIX.1): Permission Bits.
S_IWOTH sys/stat.h (POSIX.1): Permission Bits.
S_IWRITE sys/stat.h (BSD): Permission Bits.
S_IWUSR sys/stat.h (POSIX.1): Permission Bits.
S_IXGRP sys/stat.h (POSIX.1): Permission Bits.
S_IXOTH sys/stat.h (POSIX.1): Permission Bits.
S_IXUSR sys/stat.h (POSIX.1): Permission Bits.
size_t stddef.h (ISO): Important Data Types.
unsigned int sleep (unsigned int seconds) unistd.h (POSIX.1): Sleeping.
int snprintf (char *s, size_t size, const char *template, ...) stdio.h (GNU): Formatted Output Functions.
SO_BROADCAST sys/socket.h (BSD): Socket-Level Options.
int SOCK_DGRAM sys/socket.h (BSD): Communication Styles.
int socket (int namespace, int style, int protocol) sys/socket.h (BSD): Creating a Socket.
int socketpair (int namespace, int style, int protocol, int filedes[2]) sys/socket.h (BSD): Socket Pairs.
int SOCK_RAW sys/socket.h (BSD): Communication Styles.
int SOCK_RDM sys/socket.h (BSD): Communication Styles.
int SOCK_SEQPACKET sys/socket.h (BSD): Communication Styles.
int SOCK_STREAM sys/socket.h (BSD): Communication Styles.
SO_DEBUG sys/socket.h (BSD): Socket-Level Options.
SO_DONTROUTE sys/socket.h (BSD): Socket-Level Options.
SO_ERROR sys/socket.h (BSD): Socket-Level Options.
SO_KEEPALIVE sys/socket.h (BSD): Socket-Level Options.
SO_LINGER sys/socket.h (BSD): Socket-Level Options.
int SOL_SOCKET sys/socket.h (BSD): Socket-Level Options.
SO_OOBINLINE sys/socket.h (BSD): Socket-Level Options.
SO_RCVBUF sys/socket.h (BSD): Socket-Level Options.
SO_REUSEADDR sys/socket.h (BSD): Socket-Level Options.
SO_SNDBUF sys/socket.h (BSD): Socket-Level Options.
SO_STYLE sys/socket.h (GNU): Socket-Level Options.
SO_TYPE sys/socket.h (BSD): Socket-Level Options.
speed_t termios.h (POSIX.1): Line Speed.
int sprintf (char *s, const char *template, ...) stdio.h (ISO): Formatted Output Functions.
double sqrt (double x) math.h (ISO): Exponents and Logarithms.
float sqrtf (float x) math.h (ISO): Exponents and Logarithms.
long double sqrtl (long double x) math.h (ISO): Exponents and Logarithms.
void srand (unsigned int seed) stdlib.h (ISO): ISO Random.
void srand48 (long int seedval) stdlib.h (SVID): SVID Random.
int srand48_r (long int seedval, struct drand48_data *buffer) stdlib.h (GNU): SVID Random.
void srandom (unsigned int seed) stdlib.h (BSD): BSD Random.
int srandom_r (unsigned int seed, struct random_data *buf) stdlib.h (GNU): BSD Random.
int sscanf (const char *s, const char *template, ...) stdio.h (ISO): Formatted Input Functions.
sighandler_t ssignal (int signum, sighandler_t action) signal.h (SVID): Basic Signal Handling.
int SSIZE_MAX limits.h (POSIX.1): General Limits.
ssize_t unistd.h (POSIX.1): I/O Primitives.
stack_t signal.h (XPG): Signal Stack.
int stat (const char *filename, struct stat *buf) sys/stat.h (POSIX.1): Reading Attributes.
int stat64 (const char *filename, struct stat64 *buf) sys/stat.h (Unix98): Reading Attributes.
FILE * stderr stdio.h (ISO): Standard Streams.
STDERR_FILENO unistd.h (POSIX.1): Descriptors and Streams.
FILE * stdin stdio.h (ISO): Standard Streams.
STDIN_FILENO unistd.h (POSIX.1): Descriptors and Streams.
FILE * stdout stdio.h (ISO): Standard Streams.
STDOUT_FILENO unistd.h (POSIX.1): Descriptors and Streams.
int stime (time_t *newtime) time.h (SVID, XPG): Simple Calendar Time.
char * stpcpy (char *restrict to, const char *restrict from) string.h (Unknown origin): Copying and Concatenation.
char * stpncpy (char *restrict to, const char *restrict from, size_t size) string.h (GNU): Copying and Concatenation.
int strcasecmp (const char *s1, const char *s2) string.h (BSD): String/Array Comparison.
char * strcasestr (const char *haystack, const char *needle) string.h (GNU): Search Functions.
char * strcat (char *restrict to, const char *restrict from) string.h (ISO): Copying and Concatenation.
char * strchr (const char *string, int c) string.h (ISO): Search Functions.
char * strchrnul (const char *string, int c) string.h (GNU): Search Functions.
int strcmp (const char *s1, const char *s2) string.h (ISO): String/Array Comparison.
int strcoll (const char *s1, const char *s2) string.h (ISO): Collation Functions.
char * strcpy (char *restrict to, const char *restrict from) string.h (ISO): Copying and Concatenation.
size_t strcspn (const char *string, const char *stopset) string.h (ISO): Search Functions.
char * strdup (const char *s) string.h (SVID): Copying and Concatenation.
char * strdupa (const char *s) string.h (GNU): Copying and Concatenation.
int STREAM_MAX limits.h (POSIX.1): General Limits.
char * strerror (int errnum) string.h (ISO): Error Messages.
char * strerror_r (int errnum, char *buf, size_t n) string.h (GNU): Error Messages.
char * strfry (char *string) string.h (GNU): strfry.
size_t strftime (char *s, size_t size, const char *template, const struct tm *brokentime) time.h (ISO): Formatting Calendar Time.
size_t strlen (const char *s) string.h (ISO): String Length.
int strncasecmp (const char *s1, const char *s2, size_t n) string.h (BSD): String/Array Comparison.
char * strncat (char *restrict to, const char *restrict from, size_t size) string.h (ISO): Copying and Concatenation.
int strncmp (const char *s1, const char *s2, size_t size) string.h (ISO): String/Array Comparison.
char * strncpy (char *restrict to, const char *restrict from, size_t size) string.h (ISO): Copying and Concatenation.
char * strndup (const char *s, size_t size) string.h (GNU): Copying and Concatenation.
char * strndupa (const char *s, size_t size) string.h (GNU): Copying and Concatenation.
size_t strnlen (const char *s, size_t maxlen) string.h (GNU): String Length.
char * strpbrk (const char *string, const char *stopset) string.h (ISO): Search Functions.
char * strptime (const char *s, const char *fmt, struct tm *tp) time.h (XPG4): Low-Level Time String Parsing.
char * strrchr (const char *string, int c) string.h (ISO): Search Functions.
char * strsep (char **string_ptr, const char *delimiter) string.h (BSD): Finding Tokens in a String.
char * strsignal (int signum) string.h (GNU): Signal Messages.
size_t strspn (const char *string, const char *skipset) string.h (ISO): Search Functions.
char * strstr (const char *haystack, const char *needle) string.h (ISO): Search Functions.
double strtod (const char *restrict string, char **restrict tailptr) stdlib.h (ISO): Parsing of Floats.
float strtof (const char *string, char **tailptr) stdlib.h (ISO): Parsing of Floats.
intmax_t strtoimax (const char *restrict string, char **restrict tailptr, int base) inttypes.h (ISO): Parsing of Integers.
char * strtok (char *restrict newstring, const char *restrict delimiters) string.h (ISO): Finding Tokens in a String.
char * strtok_r (char *newstring, const char *delimiters, char **save_ptr) string.h (POSIX): Finding Tokens in a String.
long int strtol (const char *restrict string, char **restrict tailptr, int base) stdlib.h (ISO): Parsing of Integers.
long double strtold (const char *string, char **tailptr) stdlib.h (ISO): Parsing of Floats.
long long int strtoll (const char *restrict string, char **restrict tailptr, int base) stdlib.h (ISO): Parsing of Integers.
long long int strtoq (const char *restrict string, char **restrict tailptr, int base) stdlib.h (BSD): Parsing of Integers.
unsigned long int strtoul (const char *retrict string, char **restrict tailptr, int base) stdlib.h (ISO): Parsing of Integers.
unsigned long long int strtoull (const char *restrict string, char **restrict tailptr, int base) stdlib.h (ISO): Parsing of Integers.
uintmax_t strtoumax (const char *restrict string, char **restrict tailptr, int base) inttypes.h (ISO): Parsing of Integers.
unsigned long long int strtouq (const char *restrict string, char **restrict tailptr, int base) stdlib.h (BSD): Parsing of Integers.
struct aiocb aio.h (POSIX.1b): Asynchronous I/O.
struct aiocb64 aio.h (POSIX.1b): Asynchronous I/O.
struct aioinit aio.h (GNU): Configuration of AIO.
struct argp argp.h (GNU): Argp Parsers.
struct argp_child argp.h (GNU): Argp Children.
struct argp_option argp.h (GNU): Argp Option Vectors.
struct argp_state argp.h (GNU): Argp Parsing State.
struct dirent dirent.h (POSIX.1): Directory Entries.
struct exit_status utmp.h (SVID): Manipulating the Database.
struct flock fcntl.h (POSIX.1): File Locks.
struct fstab fstab.h (BSD): fstab.
struct FTW ftw.h (XPG4.2): Working with Directory Trees.
struct __gconv_step gconv.h (GNU): glibc iconv Implementation.
struct __gconv_step_data gconv.h (GNU): glibc iconv Implementation.
struct group grp.h (POSIX.1): Group Data Structure.
struct hostent netdb.h (BSD): Host Names.
struct if_nameindex net/if.h (IPv6 basic API): Interface Naming.
struct in6_addr netinet/in.h (IPv6 basic API): Host Address Data Type.
struct in_addr netinet/in.h (BSD): Host Address Data Type.
struct iovec sys/uio.h (BSD): Scatter-Gather.
struct itimerval sys/time.h (BSD): Setting an Alarm.
struct lconv locale.h (ISO): The Lame Way to Locale Data.
struct linger sys/socket.h (BSD): Socket-Level Options.
struct mallinfo malloc.h (GNU): Statistics of Malloc.
struct mntent mntent.h (BSD): mtab.
struct msghdr sys/socket.h (BSD): Receiving Datagrams.
struct netent netdb.h (BSD): Networks Database.
struct obstack obstack.h (GNU): Creating Obstacks.
struct option getopt.h (GNU): Getopt Long Options.
struct passwd pwd.h (POSIX.1): User Data Structure.
struct printf_info printf.h (GNU): Conversion Specifier Options.
struct protoent netdb.h (BSD): Protocols Database.
struct random_data stdlib.h (GNU): BSD Random.
struct rlimit sys/resource.h (BSD): Limits on Resources.
struct rlimit64 sys/resource.h (Unix98): Limits on Resources.
struct rusage sys/resource.h (BSD): Resource Usage.
struct sched_param sched.h (POSIX): Basic Scheduling Functions.
struct servent netdb.h (BSD): Services Database.
struct sgttyb termios.h (BSD): BSD Terminal Modes.
struct sigaction signal.h (POSIX.1): Advanced Signal Handling.
struct sigstack signal.h (BSD): Signal Stack.
struct sigvec signal.h (BSD): BSD Handler.
struct sockaddr sys/socket.h (BSD): Address Formats.
struct sockaddr_in netinet/in.h (BSD): Internet Address Formats.
struct sockaddr_un sys/un.h (BSD): Local Namespace Details.
struct stat sys/stat.h (POSIX.1): Attribute Meanings.
struct stat64 sys/stat.h (LFS): Attribute Meanings.
struct termios termios.h (POSIX.1): Mode Data Types.
struct timespec sys/time.h (POSIX.1): Elapsed Time.
struct timeval sys/time.h (BSD): Elapsed Time.
struct timezone sys/time.h (BSD): High-Resolution Calendar.
struct tm time.h (ISO): Broken-down Time.
struct tms sys/times.h (POSIX.1): Processor Time.
struct utimbuf time.h (POSIX.1): File Times.
struct utsname sys/utsname.h (POSIX.1): Platform Type.
int strverscmp (const char *s1, const char *s2) string.h (GNU): String/Array Comparison.
size_t strxfrm (char *restrict to, const char *restrict from, size_t size) string.h (ISO): Collation Functions.
int stty (int filedes, struct sgttyb * attributes) sgtty.h (BSD): BSD Terminal Modes.
int S_TYPEISMQ (struct stat *s) sys/stat.h (POSIX): Testing File Type.
int S_TYPEISSEM (struct stat *s) sys/stat.h (POSIX): Testing File Type.
int S_TYPEISSHM (struct stat *s) sys/stat.h (POSIX): Testing File Type.
int SUN_LEN (struct sockaddr_un *ptr) sys/un.h (BSD): Local Namespace Details.
_SVID_SOURCE(GNU): Feature Test Macros.
int SV_INTERRUPT signal.h (BSD): BSD Handler.
int SV_ONSTACK signal.h (BSD): BSD Handler.
int SV_RESETHAND signal.h (Sun): BSD Handler.
int swapcontext (ucontext_t *restrict oucp, const ucontext_t *restrict ucp) ucontext.h (SVID): System V contexts.
int swprintf (wchar_t *s, size_t size, const wchar_t *template, ...) wchar.h (GNU): Formatted Output Functions.
int swscanf (const wchar_t *ws, const char *template, ...) wchar.h (ISO): Formatted Input Functions.
int symlink (const char *oldname, const char *newname) unistd.h (BSD): Symbolic Links.
SYMLINK_MAX limits.h (POSIX.1): File Minimums.
int sync (void) unistd.h (X/Open): Synchronizing I/O.
long int syscall (long int sysno, ...) unistd.h (???): System Calls.
long int sysconf (int parameter) unistd.h (POSIX.1): Sysconf Definition.
int sysctl (int *names, int nlen, void *oldval, sysctl.h (BSD): System Parameters.
void syslog (int facility_priority, char *format, ...) syslog.h (BSD): syslog; vsyslog.
int system (const char *command) stdlib.h (ISO): Running a Command.
sighandler_t sysv_signal (int signum, sighandler_t action) signal.h (GNU): Basic Signal Handling.
double tan (double x) math.h (ISO): Trig Functions.
float tanf (float x) math.h (ISO): Trig Functions.
double tanh (double x) math.h (ISO): Hyperbolic Functions.
float tanhf (float x) math.h (ISO): Hyperbolic Functions.
long double tanhl (long double x) math.h (ISO): Hyperbolic Functions.
long double tanl (long double x) math.h (ISO): Trig Functions.
int tcdrain (int filedes) termios.h (POSIX.1): Line Control.
tcflag_t termios.h (POSIX.1): Mode Data Types.
int tcflow (int filedes, int action) termios.h (POSIX.1): Line Control.
int tcflush (int filedes, int queue) termios.h (POSIX.1): Line Control.
int tcgetattr (int filedes, struct termios *termios-p) termios.h (POSIX.1): Mode Functions.
pid_t tcgetpgrp (int filedes) unistd.h (POSIX.1): Terminal Access Functions.
pid_t tcgetsid (int fildes) termios.h (Unix98): Terminal Access Functions.
TCSADRAIN termios.h (POSIX.1): Mode Functions.
TCSAFLUSH termios.h (POSIX.1): Mode Functions.
TCSANOW termios.h (POSIX.1): Mode Functions.
TCSASOFT termios.h (BSD): Mode Functions.
int tcsendbreak (int filedes, int duration) termios.h (POSIX.1): Line Control.
int tcsetattr (int filedes, int when, const struct termios *termios-p) termios.h (POSIX.1): Mode Functions.
int tcsetpgrp (int filedes, pid_t pgid) unistd.h (POSIX.1): Terminal Access Functions.
void * tdelete (const void *key, void **rootp, comparison_fn_t compar) search.h (SVID): Tree Search Function.
void tdestroy (void *vroot, __free_fn_t freefct) search.h (GNU): Tree Search Function.
off_t telldir (DIR *dirstream) dirent.h (BSD): Random Access Directory.
TEMP_FAILURE_RETRY (expression) unistd.h (GNU): Interrupted Primitives.
char * tempnam (const char *dir, const char *prefix) stdio.h (SVID): Temporary Files.
char * textdomain (const char *domainname) libintl.h (GNU): Locating gettext catalog.
void * tfind (const void *key, void *const *rootp, comparison_fn_t compar) search.h (SVID): Tree Search Function.
double tgamma (double x) math.h (XPG, ISO): Special Functions.
float tgammaf (float x) math.h (XPG, ISO): Special Functions.
long double tgammal (long double x) math.h (XPG, ISO): Special Functions.
time_t time (time_t *result) time.h (ISO): Simple Calendar Time.
time_t timegm (struct tm *brokentime) time.h (???): Broken-down Time.
time_t timelocal (struct tm *brokentime) time.h (???): Broken-down Time.
clock_t times (struct tms *buffer) sys/times.h (POSIX.1): Processor Time.
time_t time.h (ISO): Simple Calendar Time.
long int timezone time.h (SVID): Time Zone Functions.
FILE * tmpfile (void) stdio.h (ISO): Temporary Files.
FILE * tmpfile64 (void) stdio.h (Unix98): Temporary Files.
int TMP_MAX stdio.h (ISO): Temporary Files.
char * tmpnam (char *result) stdio.h (ISO): Temporary Files.
char * tmpnam_r (char *result) stdio.h (GNU): Temporary Files.
int toascii (int c) ctype.h (SVID, BSD): Case Conversion.
int _tolower (int c) ctype.h (SVID): Case Conversion.
int tolower (int c) ctype.h (ISO): Case Conversion.
tcflag_t TOSTOP termios.h (POSIX.1): Local Modes.
int _toupper (int c) ctype.h (SVID): Case Conversion.
int toupper (int c) ctype.h (ISO): Case Conversion.
wint_t towctrans (wint_t wc, wctrans_t desc) wctype.h (ISO): Wide Character Case Conversion.
wint_t towlower (wint_t wc) wctype.h (ISO): Wide Character Case Conversion.
wint_t towupper (wint_t wc) wctype.h (ISO): Wide Character Case Conversion.
double trunc (double x) math.h (ISO): Rounding Functions.
int truncate (const char *filename, off_t length) unistd.h (X/Open): File Size.
int truncate64 (const char *name, off64_t length) unistd.h (Unix98): File Size.
float truncf (float x) math.h (ISO): Rounding Functions.
long double truncl (long double x) math.h (ISO): Rounding Functions.
TRY_AGAIN netdb.h (BSD): Host Names.
void * tsearch (const void *key, void **rootp, comparison_fn_t compar) search.h (SVID): Tree Search Function.
char * ttyname (int filedes) unistd.h (POSIX.1): Is It a Terminal.
int ttyname_r (int filedes, char *buf, size_t len) unistd.h (POSIX.1): Is It a Terminal.
void twalk (const void *root, __action_fn_t action) search.h (SVID): Tree Search Function.
char * tzname [2] time.h (POSIX.1): Time Zone Functions.
int TZNAME_MAX limits.h (POSIX.1): General Limits.
void tzset (void) time.h (POSIX.1): Time Zone Functions.
UCHAR_MAX limits.h (ISO): Range of Type.
ucontext_t ucontext.h (SVID): System V contexts.
uid_t sys/types.h (POSIX.1): Reading Persona.
UINT_MAX limits.h (ISO): Range of Type.
int ulimit (int cmd, ...) ulimit.h (BSD): Limits on Resources.
ULONG_LONG_MAX limits.h (ISO): Range of Type.
ULONG_MAX limits.h (ISO): Range of Type.
mode_t umask (mode_t mask) sys/stat.h (POSIX.1): Setting Permissions.
int umount (const char *file) sys/mount.h (SVID, GNU): Mount-Unmount-Remount.
int umount2 (const char *file, int flags) sys/mount.h (GNU): Mount-Unmount-Remount.
int uname (struct utsname *info) sys/utsname.h (POSIX.1): Platform Type.
int ungetc (int c, FILE *stream) stdio.h (ISO): How Unread.
wint_t ungetwc (wint_t wc, FILE *stream) wchar.h (ISO): How Unread.
union wait sys/wait.h (BSD): BSD Wait Functions.
int unlink (const char *filename) unistd.h (POSIX.1): Deleting Files.
int unlockpt (int filedes) stdlib.h (SVID, XPG4.2): Allocation.
int unsetenv (const char *name) stdlib.h (BSD): Environment Access.
void updwtmp (const char *wtmp_file, const struct utmp *utmp) utmp.h (SVID): Manipulating the Database.
USER_PROCESS utmp.h (SVID): Manipulating the Database.
USER_PROCESS utmpx.h (XPG4.2): XPG Functions.
USHRT_MAX limits.h (ISO): Range of Type.
int utime (const char *filename, const struct utimbuf *times) time.h (POSIX.1): File Times.
int utimes (const char *filename, struct timeval tvp[2]) sys/time.h (BSD): File Times.
int utmpname (const char *file) utmp.h (SVID): Manipulating the Database.
int utmpxname (const char *file) utmpx.h (XPG4.2): XPG Functions.
va_alist varargs.h (Unix): Old Varargs.
type va_arg (va_list ap, type) stdarg.h (ISO): Argument Macros.
void __va_copy (va_list dest, va_list src) stdarg.h (GNU): Argument Macros.
va_dcl varargs.h (Unix): Old Varargs.
void va_end (va_list ap) stdarg.h (ISO): Argument Macros.
va_list stdarg.h (ISO): Argument Macros.
void * valloc (size_t size) malloc.h, stdlib.h (BSD): Aligned Memory Blocks.
int vasprintf (char **ptr, const char *template, va_list ap) stdio.h (GNU): Variable Arguments Output.
void va_start (va_list ap) varargs.h (Unix): Old Varargs.
void va_start (va_list ap, last-required) stdarg.h (ISO): Argument Macros.
int VDISCARD termios.h (BSD): Other Special.
int VDSUSP termios.h (BSD): Signal Characters.
int VEOF termios.h (POSIX.1): Editing Characters.
int VEOL termios.h (POSIX.1): Editing Characters.
int VEOL2 termios.h (BSD): Editing Characters.
int VERASE termios.h (POSIX.1): Editing Characters.
void verr (int status, const char *format, va_list) err.h (BSD): Error Messages.
void verrx (int status, const char *format, va_list) err.h (BSD): Error Messages.
int versionsort (const void *a, const void *b) dirent.h (GNU): Scanning Directory Content.
int versionsort64 (const void *a, const void *b) dirent.h (GNU): Scanning Directory Content.
pid_t vfork (void) unistd.h (BSD): Creating a Process.
int vfprintf (FILE *stream, const char *template, va_list ap) stdio.h (ISO): Variable Arguments Output.
int vfscanf (FILE *stream, const char *template, va_list ap) stdio.h (ISO): Variable Arguments Input.
int vfwprintf (FILE *stream, const wchar_t *template, va_list ap) wchar.h (ISO): Variable Arguments Output.
int vfwscanf (FILE *stream, const wchar_t *template, va_list ap) wchar.h (ISO): Variable Arguments Input.
int VINTR termios.h (POSIX.1): Signal Characters.
int VKILL termios.h (POSIX.1): Editing Characters.
int vlimit (int resource, int limit) sys/vlimit.h (BSD): Limits on Resources.
int VLNEXT termios.h (BSD): Other Special.
int VMIN termios.h (POSIX.1): Noncanonical Input.
int vprintf (const char *template, va_list ap) stdio.h (ISO): Variable Arguments Output.
int VQUIT termios.h (POSIX.1): Signal Characters.
int VREPRINT termios.h (BSD): Editing Characters.
int vscanf (const char *template, va_list ap) stdio.h (ISO): Variable Arguments Input.
int vsnprintf (char *s, size_t size, const char *template, va_list ap) stdio.h (GNU): Variable Arguments Output.
int vsprintf (char *s, const char *template, va_list ap) stdio.h (ISO): Variable Arguments Output.
int vsscanf (const char *s, const char *template, va_list ap) stdio.h (ISO): Variable Arguments Input.
int VSTART termios.h (POSIX.1): Start/Stop Characters.
int VSTATUS termios.h (BSD): Other Special.
int VSTOP termios.h (POSIX.1): Start/Stop Characters.
int VSUSP termios.h (POSIX.1): Signal Characters.
int vswprintf (wchar_t *s, size_t size, const wchar_t *template, va_list ap) wchar.h (GNU): Variable Arguments Output.
int vswscanf (const wchar_t *s, const wchar_t *template, va_list ap) wchar.h (ISO): Variable Arguments Input.
void vsyslog (int facility_priority, char *format, va_list arglist) syslog.h (BSD): syslog; vsyslog.
int VTIME termios.h (POSIX.1): Noncanonical Input.
int vtimes (struct vtimes current, struct vtimes child) vtimes.h (vtimes.h): Resource Usage.
void vwarn (const char *format, va_list) err.h (BSD): Error Messages.
void vwarnx (const char *format, va_list) err.h (BSD): Error Messages.
int VWERASE termios.h (BSD): Editing Characters.
int vwprintf (const wchar_t *template, va_list ap) wchar.h (ISO): Variable Arguments Output.
int vwscanf (const wchar_t *template, va_list ap) wchar.h (ISO): Variable Arguments Input.
pid_t wait (int *status-ptr) sys/wait.h (POSIX.1): Process Completion.
pid_t wait3 (union wait *status-ptr, int options, struct rusage *usage) sys/wait.h (BSD): BSD Wait Functions.
pid_t wait4 (pid_t pid, int *status-ptr, int options, struct rusage *usage) sys/wait.h (BSD): Process Completion.
pid_t waitpid (pid_t pid, int *status-ptr, int options) sys/wait.h (POSIX.1): Process Completion.
void warn (const char *format, ...) err.h (BSD): Error Messages.
void warnx (const char *format, ...) err.h (BSD): Error Messages.
WCHAR_MAX limits.h (GNU): Range of Type.
wint_t WCHAR_MAX wchar.h (ISO): Extended Char Intro.
wint_t WCHAR_MIN wchar.h (ISO): Extended Char Intro.
wchar_t stddef.h (ISO): Extended Char Intro.
int WCOREDUMP (int status) sys/wait.h (BSD): Process Completion Status.
wchar_t * wcpcpy (wchar_t *restrict wto, const wchar_t *restrict wfrom) wchar.h (GNU): Copying and Concatenation.
wchar_t * wcpncpy (wchar_t *restrict wto, const wchar_t *restrict wfrom, size_t size) wchar.h (GNU): Copying and Concatenation.
size_t wcrtomb (char *restrict s, wchar_t wc, mbstate_t *restrict ps) wchar.h (ISO): Converting a Character.
int wcscasecmp (const wchar_t *ws1, const wchar_T *ws2) wchar.h (GNU): String/Array Comparison.
wchar_t * wcscat (wchar_t *restrict wto, const wchar_t *restrict wfrom) wchar.h (ISO): Copying and Concatenation.
wchar_t * wcschr (const wchar_t *wstring, int wc) wchar.h (ISO): Search Functions.
wchar_t * wcschrnul (const wchar_t *wstring, wchar_t wc) wchar.h (GNU): Search Functions.
int wcscmp (const wchar_t *ws1, const wchar_t *ws2) wchar.h (ISO): String/Array Comparison.
int wcscoll (const wchar_t *ws1, const wchar_t *ws2) wchar.h (ISO): Collation Functions.
wchar_t * wcscpy (wchar_t *restrict wto, const wchar_t *restrict wfrom) wchar.h (ISO): Copying and Concatenation.
size_t wcscspn (const wchar_t *wstring, const wchar_t *stopset) wchar.h (ISO): Search Functions.
wchar_t * wcsdup (const wchar_t *ws) wchar.h (GNU): Copying and Concatenation.
size_t wcsftime (wchar_t *s, size_t size, const wchar_t *template, const struct tm *brokentime) time.h (ISO/Amend1): Formatting Calendar Time.
size_t wcslen (const wchar_t *ws) wchar.h (ISO): String Length.
int wcsncasecmp (const wchar_t *ws1, const wchar_t *s2, size_t n) wchar.h (GNU): String/Array Comparison.
wchar_t * wcsncat (wchar_t *restrict wto, const wchar_t *restrict wfrom, size_t size) wchar.h (ISO): Copying and Concatenation.
int wcsncmp (const wchar_t *ws1, const wchar_t *ws2, size_t size) wchar.h (ISO): String/Array Comparison.
wchar_t * wcsncpy (wchar_t *restrict wto, const wchar_t *restrict wfrom, size_t size) wchar.h (ISO): Copying and Concatenation.
size_t wcsnlen (const wchar_t *ws, size_t maxlen) wchar.h (GNU): String Length.
size_t wcsnrtombs (char *restrict dst, const wchar_t **restrict src, size_t nwc, size_t len, mbstate_t *restrict ps) wchar.h (GNU): Converting Strings.
wchar_t * wcspbrk (const wchar_t *wstring, const wchar_t *stopset) wchar.h (ISO): Search Functions.
wchar_t * wcsrchr (const wchar_t *wstring, wchar_t c) wchar.h (ISO): Search Functions.
size_t wcsrtombs (char *restrict dst, const wchar_t **restrict src, size_t len, mbstate_t *restrict ps) wchar.h (ISO): Converting Strings.
size_t wcsspn (const wchar_t *wstring, const wchar_t *skipset) wchar.h (ISO): Search Functions.
wchar_t * wcsstr (const wchar_t *haystack, const wchar_t *needle) wchar.h (ISO): Search Functions.
double wcstod (const wchar_t *restrict string, wchar_t **restrict tailptr) wchar.h (ISO): Parsing of Floats.
float wcstof (const wchar_t *string, wchar_t **tailptr) stdlib.h (ISO): Parsing of Floats.
intmax_t wcstoimax (const wchar_t *restrict string, wchar_t **restrict tailptr, int base) wchar.h (ISO): Parsing of Integers.
wchar_t * wcstok (wchar_t *newstring, const char *delimiters) wchar.h (ISO): Finding Tokens in a String.
long int wcstol (const wchar_t *restrict string, wchar_t **restrict tailptr, int base) wchar.h (ISO): Parsing of Integers.
long double wcstold (const wchar_t *string, wchar_t **tailptr) stdlib.h (ISO): Parsing of Floats.
long long int wcstoll (const wchar_t *restrict string, wchar_t **restrict tailptr, int base) wchar.h (ISO): Parsing of Integers.
size_t wcstombs (char *string, const wchar_t *wstring, size_t size) stdlib.h (ISO): Non-reentrant String Conversion.
long long int wcstoq (const wchar_t *restrict string, wchar_t **restrict tailptr, int base) wchar.h (GNU): Parsing of Integers.
unsigned long int wcstoul (const wchar_t *restrict string, wchar_t **restrict tailptr, int base) wchar.h (ISO): Parsing of Integers.
unsigned long long int wcstoull (const wchar_t *restrict string, wchar_t **restrict tailptr, int base) wchar.h (ISO): Parsing of Integers.
uintmax_t wcstoumax (const wchar_t *restrict string, wchar_t **restrict tailptr, int base) wchar.h (ISO): Parsing of Integers.
unsigned long long int wcstouq (const wchar_t *restrict string, wchar_t **restrict tailptr, int base) wchar.h (GNU): Parsing of Integers.
wchar_t * wcswcs (const wchar_t *haystack, const wchar_t *needle) wchar.h (XPG): Search Functions.
size_t wcsxfrm (wchar_t *restrict wto, const wchar_t *wfrom, size_t size) wchar.h (ISO): Collation Functions.
int wctob (wint_t c) wchar.h (ISO): Converting a Character.
int wctomb (char *string, wchar_t wchar) stdlib.h (ISO): Non-reentrant Character Conversion.
wctrans_t wctrans (const char *property) wctype.h (ISO): Wide Character Case Conversion.
wctrans_t wctype.h (ISO): Wide Character Case Conversion.
wctype_t wctype (const char *property) wctype.h (ISO): Classification of Wide Characters.
wctype_t wctype.h (ISO): Classification of Wide Characters.
int WEOF wchar.h (ISO): EOF and Errors.
wint_t WEOF wchar.h (ISO): Extended Char Intro.
int WEXITSTATUS (int status) sys/wait.h (POSIX.1): Process Completion Status.
int WIFEXITED (int status) sys/wait.h (POSIX.1): Process Completion Status.
int WIFSIGNALED (int status) sys/wait.h (POSIX.1): Process Completion Status.
int WIFSTOPPED (int status) sys/wait.h (POSIX.1): Process Completion Status.
wint_t wchar.h (ISO): Extended Char Intro.
wchar_t * wmemchr (const wchar_t *block, wchar_t wc, size_t size) wchar.h (ISO): Search Functions.
int wmemcmp (const wchar_t *a1, const wchar_t *a2, size_t size) wcjar.h (ISO): String/Array Comparison.
wchar_t * wmemcpy (wchar_t *restrict wto, const wchar_t *restruct wfrom, size_t size) wchar.h (ISO): Copying and Concatenation.
wchar_t * wmemmove (wchar *wto, const wchar_t *wfrom, size_t size) wchar.h (ISO): Copying and Concatenation.
wchar_t * wmempcpy (wchar_t *restrict wto, const wchar_t *restrict wfrom, size_t size) wchar.h (GNU): Copying and Concatenation.
wchar_t * wmemset (wchar_t *block, wchar_t wc, size_t size) wchar.h (ISO): Copying and Concatenation.
int W_OK unistd.h (POSIX.1): Testing File Access.
int wordexp (const char *words, wordexp_t *word-vector-ptr, int flags) wordexp.h (POSIX.2): Calling Wordexp.
wordexp_t wordexp.h (POSIX.2): Calling Wordexp.
void wordfree (wordexp_t *word-vector-ptr) wordexp.h (POSIX.2): Calling Wordexp.
int wprintf (const wchar_t *template, ...) wchar.h (ISO): Formatted Output Functions.
WRDE_APPEND wordexp.h (POSIX.2): Flags for Wordexp.
WRDE_BADCHAR wordexp.h (POSIX.2): Calling Wordexp.
WRDE_BADVAL wordexp.h (POSIX.2): Calling Wordexp.
WRDE_CMDSUB wordexp.h (POSIX.2): Calling Wordexp.
WRDE_DOOFFS wordexp.h (POSIX.2): Flags for Wordexp.
WRDE_NOCMD wordexp.h (POSIX.2): Flags for Wordexp.
WRDE_NOSPACE wordexp.h (POSIX.2): Calling Wordexp.
WRDE_REUSE wordexp.h (POSIX.2): Flags for Wordexp.
WRDE_SHOWERR wordexp.h (POSIX.2): Flags for Wordexp.
WRDE_SYNTAX wordexp.h (POSIX.2): Calling Wordexp.
WRDE_UNDEF wordexp.h (POSIX.2): Flags for Wordexp.
ssize_t write (int filedes, const void *buffer, size_t size) unistd.h (POSIX.1): I/O Primitives.
ssize_t writev (int filedes, const struct iovec *vector, int count) sys/uio.h (BSD): Scatter-Gather.
int wscanf (const wchar_t *template, ...) wchar.h (ISO): Formatted Input Functions.
int WSTOPSIG (int status) sys/wait.h (POSIX.1): Process Completion Status.
int WTERMSIG (int status) sys/wait.h (POSIX.1): Process Completion Status.
int X_OK unistd.h (POSIX.1): Testing File Access.
_XOPEN_SOURCE(X/Open): Feature Test Macros.
_XOPEN_SOURCE_EXTENDED(X/Open): Feature Test Macros.
double y0 (double x) math.h (SVID): Special Functions.
float y0f (float x) math.h (SVID): Special Functions.
long double y0l (long double x) math.h (SVID): Special Functions.
double y1 (double x) math.h (SVID): Special Functions.
float y1f (float x) math.h (SVID): Special Functions.
long double y1l (long double x) math.h (SVID): Special Functions.
double yn (int n, double x) math.h (SVID): Special Functions.
float ynf (int n, float x) math.h (SVID): Special Functions.
long double ynl (int n, long double x) math.h (SVID): Special Functions.
<setfilename>INSTALL</setfilename>
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