Index (man pages section 3: Basic Library Functions)

man pages section 3: Basic Library Functions

Previous: Basic Library Functions


Numbers and Symbols

	__fbufsize - interfaces to stdio FILE structure ( )

	__flbf - interfaces to stdio FILE structure ( )

	__fpending - interfaces to stdio FILE structure ( )

	__fpurge - interfaces to stdio FILE structure ( )

	__freadable - interfaces to stdio FILE structure ( )

	__freading - interfaces to stdio FILE structure ( )

	__fsetlocking - interfaces to stdio FILE structure ( )

	__fwritable - interfaces to stdio FILE structure ( )

	__fwriting - interfaces to stdio FILE structure ( )


A

	abort - terminate the process abnormally ( )

	abs - return absolute value of integer ( )

	accounting, time accounting for current process - times ( )

	acquire and release stream lock - flockfile ( )
		funlockfile ( )

	additional severities, define - addsev ( )

	address of symbol, get address in shared object or executable - dlsym ( )

	addsev - define additional severities ( )

	addseverity - build a list of severity levels for an application for use with fmtmsg ( )

	alarm, schedule signal after interval in microseconds - ualarm ( )

	alphasort - scan a directory ( )

	applications
		build a list of severity levels for use with fmtmsg - addseverity ( )
		display a message on stderr or system console - fmtmsg ( )
		get entries from symbol table - nlist ( )

	arithmetic, compute the quotient and remainder - div ( )

	arithmetic, 48-bit integer, generate uniformly distributed pseudo-random numbers - drand48 ( )

	ascftime - convert date and time to string ( )

	assert - verify program assertion ( )

	associate a stream with a file descriptor - fdopen ( )

	atexit - register a function to run at process termination or object unloading ( )

	atof - convert string to double-precision number ( )

	atoi - string conversion routines ( )

	atol - string conversion routines ( )

	atoll - string conversion routines ( )


B

	base-64 ASCII characters
		convert from long integer - l64a ( )
		convert to long integer - a64l ( )

	basename - return the last element of path name ( )

	bcmp - operates on variable length strings of bytes ( )

	bcopy - operates on variable length strings of bytes ( )

	binary search of sorted table, - bsearch ( )

	binary search trees, manage
		- tdelete ( )
		- tfind ( )
		- tsearch ( )
		- twalk ( )

	bindtextdomain - select location of domain ( )

	bit and byte operations, find first set bit - ffs ( )

	bsd_signal - simplified signal facilities ( )

	bsdmalloc - memory allocator ( )

	bsearch - binary search a sorted table ( )

	bstring - bit and byte string operations ( )

	btowc - single-byte to wide-character conversion ( )

	buffering, assign to stream
		- setbuffer ( )
		- setlinebuf ( )

	byte swap - swab ( )

	bzero - operates on variable length strings of bytes ( )


C

	C Compilation
		close a shared object - dlclose ( )
		create new file from dynamic object component - dldump ( )
		get address of symbol in shared object or executable - dlsym ( )
		get diagnostic information - dlerror ( )
		open a shared object - dlopen ( )

	catclose - close a message catalog ( )

	catgets - read a program message ( )

	catopen - open a message catalog ( )

	cfgetispeed - get input baud rate ( )

	cfgetospeed - get output baud rate ( )

	cfsetispeed - set input baud rate ( )

	cfsetospeed - set output baud rate ( )

	cftime - convert date and time to string ( )

	character handling
		- ctype ( )
		- isalnum ( )
		- isalpha ( )
		- isascii ( )
		- iscntrl ( )
		- isdigit ( )
		- isgraph ( )
		- islower ( )
		- isprint ( )
		- ispunct ( )
		- isspace ( )
		- isupper ( )
		- isxdigit ( )

	clock - report CPU time used ( )

	close a directory stream - closedir ( )

	close a shared object - dlclose ( )

	close a stream - fclose ( )

	closedir - close a directory stream ( )

	closelog - control system log ( )

	code conversion allocation function - iconv_open ( )

	code conversion deallocation function - iconv_close ( )

	code conversion for Process Code and File Code
		- strtows ( )
		- wstostr ( )

	code conversion function - iconv ( )

	column positions of a wide-character code - wcwidth ( )

	column positions of a wide-character string - wcswidth ( )

	command options, get option letter from argument vector - getopt ( )

	command suboptions, parse suboptions from a string - getsubopt ( )

	compare wide-characters in memory - wmemcmp ( )

	compile and execute regular expressions
		- re_comp ( )
		- re_exec ( )

	confstr - get configurable variables ( )

	control system log
		- closelog ( )
		- openlog ( )
		- setlogmask ( )
		- syslog ( )

	convert date and time to string - strftime ( )

	convert string to unsigned long - strtoul ( )

	convert wide character string to double-precision number - wcstod ( )

	convert date and time to string - strftime
		ascftime ( )
		cftime ( )

	convert wide character string to double-precision number - watof, watof ( )

	convert wide character string to double-precision number - wstod, wstod ( )

	convert a character string to a wide-character string - mbstowcs ( )

	convert a character string to a wide-character string (restartable) - mbsrtowcs ( )

	convert a character to a wide-character code - mbtowc ( )

	convert a character to a wide-character code (restartable) - mbrtowc ( )

	convert a wide-character code to a character - wctomb ( )

	convert a wide-character code to a character (restartable) - wcrtomb ( )

	convert a wide-character string to a character string - wcstombs ( )

	convert a wide-character string to a character string (restartable) - wcsrtombs ( )

	convert date and time to wide character string - wcsftime ( )

	convert floating-point number to string
		- ecvt ( )
		- fcvt ( )
		- gcvt ( )

	convert formatted input
		- fscanf ( )
		- scanf ( )
		- sscanf ( )

	convert formatted wide-character input
		- fwscanf ( )
		- swscanf ( )
		- wscanf ( )

	convert monetary value to string -strfmon ( )

	convert numbers to strings
		- econvert ( )
		- fconvert ( )
		- fprintf ( )
		- gconvert ( )
		- printf ( )
		- qeconvert ( )
		- qfconvert ( )
		- qgconvert ( )
		- seconvert ( )
		- sfconvert ( )
		- sgconvert ( )
		- sprintf ( )
		- vfprintf ( )
		- vprintf ( )

	convert string to double-precision number
		- atof ( )
		- strtod ( )

	convert to wchar_t strings, wsprintf ( )

	convert wide character string to unsigned long - wcstoul ( )

	copy wide-characters in memory - wmemcpy ( )

	copy wide-characters in memory with overlapping areas - wmemmove ( )

	CPU time, report for calling process - clock ( )

	CPU-use, prepare execution profile - monitor ( )

	create a temporary file - tmpfile ( )

	create new file from dynamic object component - dldump ( )

	crypt - string encoding function ( )

	cset - get information on EUC codesets ( )

	csetcol - get information on EUC codesets ( )

	csetlen - get information on EUC codesets ( )

	csetno - get information on EUC codesets ( )

	ctermid - generate path name for controlling terminal ( )

	ctermid_r - generate path name for controlling terminal ( )

	ctype - character handling ( )

	current location of a named directory stream - telldir ( )

	current working directory, get pathname - getcwd ( )

	cuserid - get character-string representation of login name of user ( )


D

	data base subroutines - dbm ( )
		dbmclose ( )
		dbminit ( )
		delete ( )
		fetch ( )
		firstkey ( )
		nextkey ( )
		store ( )

	database functions
		- dbm_clearerr ( )
		- dbm_close ( )
		- dbm_delete ( )
		- dbm_error ( )
		- dbm_fetch ( )
		- dbm_firstkey ( )
		- dbm_nextkey ( )
		- dbm_open ( )
		- dbm_store ( )

	date and time
		convert to string - asctime ( )
		convert to string - asctime_r ( )
		convert to string - ctime ( )
		convert to string - ctime_r ( )
		convert to string - gmtime ( )
		convert to string - gmtime_r ( )
		convert to string - localtime ( )
		convert to string - localtime_r ( )
		convert to string - tzset ( )
		convert to string - tzsetwall ( )
		convert user format date and time - getdate ( )
		- gettimeofday ( ) ( )

	date and time conversion - strptime ( )

	dbm - data base subroutines ( )

	dbm_clearerr - database functions ( )

	dbm_close - database functions ( )

	dbm_delete - database functions ( )

	dbm_error - database functions ( )

	dbm_fetch - database functions ( )

	dbm_firstkey - database functions ( )

	dbm_nextkey - database functions ( )

	dbm_open - database functions ( )

	dbm_store - database functions ( )

	dbmclose - data base subroutines ( )

	dbminit - data base subroutines ( )

	debugging memory allocator
		- calloc ( )
		- cfree ( )
		- free ( )
		- mallinfo ( )
		- malloc ( )
		- mallopt ( )
		- memalign ( )
		- realloc ( )
		- valloc ( )

	decimal record from double-precision floating - double_to_decimal ( )

	decimal record from extended-precision floating - extended_to_decimal ( )

	decimal record from quadruple-precision floating - quadruple_to_decimal ( )

	decimal record from single-precision floating - single_to_decimal ( )

	decimal record to double-precision floating - decimal_to_double ( )

	decimal record to extended-precision floating - decimal_to_extended ( )

	decimal record to quadruple-precision floating - decimal_to_quadruple ( )

	decimal record to single-precision floating - decimal_to_single ( )

	decimal_to_double - decimal record to double-precision floating ( )

	decimal_to_extended - decimal record to extended-precision floating ( )

	decimal_to_quadruple - decimal record to quadruple-precision floating ( )

	decimal_to_single - decimal record to single-precision floating ( )

	decompose floating-point number
		- modf ( )
		- modff ( )

	define character class - wctype ( )

	define character mapping - wctrans ( )

	define default catalog - setcat ( )

	define the label for pfmt() and lfmt(). - setlabel ( )

	delete - data base subroutines ( )

	detach a name from a STREAMS-based file descriptor - fdetach ( )

	determine conversion object status - mbsinit ( )

	device number, manage - makedev, major, minor ( )

	dgettext - message handling function ( )

	difftime - computes the difference between two calendar times ( )

	directio - provide advice to file system ( )

	directories
		get current working directory pathname - getwd ( )
		get pathname of current working directory - getcwd ( )

	directory operations
		- alphasort ( )
		- scandir ( )

	dirname - report parent directory name of file path name ( )

	display error message in standard format - pfmt ( )

	display error message in standard format and pass to logging and monitoring services - lfmt ( )

	display error message in standard format and pass to logging and monitoring services - vlfmt ( )

	display error message in standard format and pass to logging and monitoring services - vpfmt ( )

	div - compute quotient and remainder ( )

	division and remainder operations
		- div ( )
		- ldiv ( )

	dladdr, dladdr1 - translate address to symbolic information ( )

	dlclose - close a shared object ( )

	dldump - create new file from dynamic object component of calling process ( )

	dlerror - get diagnostic information ( )

	dlinfo - dynamic load information ( )

	dlopen - open a shared object ( )

	dlsym - get address of symbol in shared object or executable ( )

	double_to_decimal - decimal record from double-precision floating ( )

	dup2 - duplicate an open file descriptor ( )

	duplicate an open file descriptor - dup2 ( )

	dynamic linking
		close a shared object - dlclose ( )
		create new file from dynamic object component - dldump ( )
		get address of symbol in shared object or executable - dlsym ( )
		get diagnostic information - dlerror ( )
		open a shared object - dlopen ( )

	dynamic load information - dlinfo ( )


E

	econvert - convert number to ASCII ( )

	edata - last location in program ( )

	end - last location in program ( )

	endgrent - group database entry functions ( )

	endpwent - get password entry from user database ( )

	endspent - get shadow password database entry ( )

	endusershell() - function ( )

	endutent - user accounting database functions ( )

	endutxent - user accounting database functions ( )

	environment name, return value - getenv ( )

	environment variables, change or add value - putenv ( )

	error messages, get string - strerror ( )

	error messages, system, print - perror ( )

	etext - last location in program ( )

	EUC character bytes, - euclen ( )

	EUC characters, convert a string of Process Code characters to EUC characters and put it on a stream - putws ( )

	EUC codeset, get information, - getwidth ( )

	EUC codesets, get information
		- cset ( )
		- csetcol ( )
		- csetlen ( )
		- csetno ( )
		- wcsetno ( )

	EUC display width
		- euccol ( )
		- eucscol ( )

	euccol - get EUC character display width ( )

	euclen - get EUC byte length ( )

	eucscol - get EUC string display width ( )

	exit - terminate process ( )

	extended_to_decimal - decimal record from extended-precision floating ( )

	Extended Unix Code
		See EUC

	extract mantissa and exponent from double precision number - frexp ( )


F

	fattach - attach a STREAMS-based file descriptor to an object in the file system name space ( )

	fclose - close a stream ( )

	fconvert - convert number to ASCII ( )

	FD_CLR - synchronous I/O multiplexing ( )

	FD_ISSET - synchronous I/O multiplexing ( )

	FD_SET - synchronous I/O multiplexing ( )

	FD_ZERO - synchronous I/O multiplexing ( )

	fdetach - detach a name from a STREAMS-based file descriptor ( )

	fdopen - associate a stream with a file descriptor ( )

	fetch - data base subroutines ( )

	fflush - flush a stream ( )

	ffs - find first set bit ( )

	fgetc - get a byte from a stream ( )

	fgetgrent - group database entry functions ( )

	fgetgrent_r - group database entry functions ( )

	fgetpos - get current file position information ( )

	fgetpwent - get password entry from a file ( )

	fgetpwent_r - get password entry from a file ( )

	fgetspent - get shadow password database entry ( )

	fgetspent_r - get shadow password database entry(reentrant) ( )

	fgetwc - get a wide-character code from a stream ( )

	fgetws - get a wide-character string from a stream ( )

	FIFO, create a new one - mkfifo ( )

	file descriptor
		duplicate an open one - dup2 ( )
		STREAMS-based, attach to an object in file system name space - fattach ( )
		test for a STREAMS file - isastream ( )

	file descriptors, apply or remove advisory lock on open file - flock ( )

	file name, make a unique one - mktemp ( )

	make a unique file name - mkstemp ( )

	file pointer in a stream, reposition - fsetpos, fgetpos ( )

	file_to_decimal - decimal record from character stream ( )

	file tree
		recursively descend - ftw ( )
		recursively descend - nftw ( )

	files
		allows sections of file to be locked - lockf ( )
		optimizing usage of files - directio ( )
		- remove ( )
		report parent directory of file path name - dirname ( )
		set a file to a specified length - truncate ( )
		synchronize a file's in-memory state with that on the physical medium - fsync ( )

	find a wide-character in memory - wmemchr ( )

	find a wide-character substring - wcsstr ( )

	find pathname of a terminal
		- ttyname ( )
		- ttyname_r ( )

	firstkey - data base subroutines ( )

	floating-point number, convert to string - ecvt ( )

	floating-point number, determine type
		- finite ( )
		- fpclass ( )
		- isnan ( )
		- isnand ( )
		- isnanf ( )
		- unordered ( )

	flock - apply or remove an advisory lock on an open file ( )

	flockfile - acquire and release stream lock ( )

	flush a stream - fflush ( )

	flush non-transmitted output data, non-read input data or both - tcflush ( )

	_flushlbf - interfaces to stdio FILE structure ( )

	fmtmsg - display a message on stderr or system console ( )

	fnmatch - match filename or path name ( )

	fopen - open a stream ( )

	fopen - open stream ( )

	formatted input conversion - wsscanf ( )

	formatted output conversion
		- fprintf ( )
		- printf ( )
		- sprintf ( )
		- vfprintf ( )
		- vprintf ( )
		- vsprintf ( )

	fpgetmask - IEEE floating-point environment control ( )

	fpgetround - IEEE floating-point environment control ( )

	fpgetsticky - IEEE floating-point environment control ( )

	fprintf - formatted output conversion ( )

	fprintf - print formatted output ( )

	fpsetmask - IEEE floating-point environment control ( )

	fpsetround - IEEE floating-point environment control ( )

	fpsetsticky -IEEE floating-point environment control ( )

	fputc - put a byte on a stream ( )

	fputws - put wide character string on a stream ( )

	free - memory allocator ( )

	freopen - open a stream ( )

	freopen - open stream ( )

	frexp - extract mantissa and exponent from double precision number ( )

	fscanf - convert formatted input ( )

	fseek - reposition a file-position indicator in a stream ( )

	fseeko - reposition a file-position indicator in a stream ( )

	fsetpos - reposition a file pointer in a stream ( )

	fsync - synchronize a file's in-memory state with that on the physical medium ( )

	ftell - return a file offset in a stream ( )

	ftello - return a file offset in a stream ( )

	ftime - get date and time ( )

	ftruncate - set a file to a specified length ( )

	ftw - walk a file tree ( )

	func_to_decimal - decimal record from character function ( )

	funlockfile - acquire and release stream lock ( )

	fwide - set stream orientation ( )

	fwprintf - print formatted wide-character output ( )

	fwscanf - convert formatted wide-character input ( )


G

	gconvert - convert number to ASCII ( )

	general terminal interface, - termios ( )

	generate path name for controlling terminal
		- ctermid ( )
		- ctermid_r ( )

	generate path names matching a pattern
		- glob ( )
		- globfree ( )

	get a wide-character string from a stream - fgetws ( )

	get a wide-character string from a stream - getws ( )

	get mnttab file information - getextmntent ( )

	get mnttab file information - getmntany ( )

	get mnttab file information - getmntent ( )

	get mnttab file information - hasmntopt ( )

	get mnttab file information - putmntent ( )

	get mnttab file information - resetmnttab ( )

	get a byte from a stream
		- fgetc ( )
		- getc ( )
		- getc_unlocked ( )
		- getchar ( )
		- getchar_unlocked ( )
		- getw ( )

	get a wide-character code from a stream - fgetwc ( )

	get address of symbol in shared object or executable - dlsym ( )

	get configurable variables - confstr ( )

	get current file position information - fgetpos ( )

	get diagnostic information - dlerror ( )

	get foreground process group ID - tcgetpgrp ( )

	get input baud rate, - cfgetispeed ( )

	get name of signal - strsignal ( )

	get number of bytes in a character - mblen ( )

	get number of bytes in a character (restartable) - mbrlen ( )

	get or set process scheduling priority
		- getpriority ( )
		- setpriority ( )

	get output baud rate, - cfgetospeed ( )

	get process group ID for session leader for controlling terminal - tcgetsid ( )

	get system load averages - getloadavg ( )

	get the parameters associated with the terminal - tcgetattr ( )

	get wide character from a stream - getwc ( )

	get wide character from stdin stream - getwchar ( )

	getc - get a byte from a stream ( )

	getc_unlocked - get a byte from a stream ( )

	getchar - get a byte from a stream ( )

	getchar_unlocked - get a byte from a stream ( )

	getcwd - get pathname of current working directory ( )

	getdate - convert user format date and time ( )
		General Specifications ( )
		Internal Format Conversion ( )
		Modified Conversion Specifications ( )

	getenv - return value for environment name ( )

	getexecname - return pathname of executable ( )

	getextmntent - get mnttab file information ( )

	getgrent - group database entry functions ( )

	getgrent_r - group database entry functions ( )

	getgrgid - group database entry functions ( )

	getgrgid_r - group database entry functions ( )

	getgrnam - group database entry functions ( )

	getgrnam_r - group database entry functions ( )

	gethostid - get unique identifier of current host ( )

	gethostname - get name of current host ( )

	gethrtime - get high resolution real time ( )

	gethrvtime - get high resolution virtual time ( )

	getloadavg - get system load averages ( )

	getlogin - get login name ( )

	getlogin_r - get login name ( )

	getmntany - get mnttab file information ( )

	getmntent - get mnttab file information ( )

	getopt - get option letter from argument vector ( )

	getpagesize - get system page size ( )

	getpass - read a string of characters without echo ( )

	getpassphrase - read a string of characters without echo ( )

	getpriority - get or set process scheduling priority ( )

	getpw - get passwd entry from UID ( )

	getpwent - get password entry from user database ( )

	getpwent_r - get password entry from user database ( )

	getpwnam - get password entry from user database ( )

	getpwnam_r - get password entry from user database ( )

	getpwuid - get password entry from user database ( )

	getpwuid_r - get password entry from user database ( )

	getrusage - get information about resource utilization ( )

	getspent - get shadow password database entry ( )

	getspent_r - get shadow password database entry (reentrant) ( )

	getspnam - get shadow password database entry ( )

	getspnam_r - get shadow password database entry (reentrant) ( )

	getsubopt - parse suboptions from a string ( )

	gettext - message handling function ( )

	gettimeofday - get date and time ( )

	gettimeofday - get system's notion of current Greenwich time ( )

	gettxt - retrieve a text string ( )

	getusershell() - get legal user shells ( )

	getutent - user accounting database functions ( )

	getutid - user accounting database functions ( )

	getutline - user accounting database functions ( )

	getutmp - user accounting database functions ( )

	getutmpx - user accounting database functions ( )

	getutxent - user accounting database functions ( )

	getutxid - user accounting database functions ( )

	getutxline - user accounting database functions ( )

	getvfsany - get vfstab file entry ( )

	getvfsent - get vfstab file entry ( )

	getvfsfile - get vfstab file entry ( )

	getvfsspec - get vfstab file entry ( )

	getw - get a byte from a stream ( )

	getwc - get wide character from a stream ( )

	getwchar - get wide character from stdin stream ( )

	getwd - get current working directory pathname ( )

	getwidth - get codeset information ( )

	getws - get a wide-character string from a stream ( )

	glob - generate path names matching a pattern ( )

	globfree - generate path names matching a pattern ( )

	grantpt - grant access to the slave pseudo-terminal device ( )

	group database entry functions - endgrent ( )

	group database entry functions - fgetgrent ( )

	group database entry functions - fgetgrent_r ( )

	group database entry functions - getgrent ( )

	group database entry functions - getgrent_r ( )

	group database entry functions - getgrgid ( )

	group database entry functions - getgrgid_r ( )

	group database entry functions - getgrnam ( )

	group database entry functions - getgrnam_r ( )

	group database entry functions - setgrent ( )

	group IDs, supplementary, initialize - initgroups ( )


H

	halt system processor, - reboot ( )

	hash-table search routine, - hsearch ( )

	hasmntopt - get mnttab file information ( )

	hcreate - create hash table ( )

	hdestroy - destroy hash table ( )

	host ID, get unique identifier of current host - gethostid ( )

	host name
		get name of current host - gethostname ( )
		set name of current host - sethostname ( )

	hsearch - hash-table search routine ( )


I

	I/O multiplexing, synchronous, - select ( )

	I/O package, standard buffered I/O - stdio ( )

	iconv - code conversion function ( )

	iconv_close - code conversion deallocation function ( )

	iconv_open - code conversion allocation function ( )

	IEEE arithmetic, convert floating-point number to string - ecvt ( )

	IEEE floating-point environment control
		- fpgetmaks ( )
		- fpgetround ( )
		- fpgetsticky ( )
		- fpsetmask ( )
		- fpsetround ( )
		- fpsetsticky ( )

	index - string operations ( )

	initgroups - initialize the supplementary group access list ( )

	initstate - pseudorandom number functions ( )

	input conversion, convert from wchar_t string - wsscanf ( )

	input/output package, standard buffered I/O - stdio ( )

	insque - insert element to a queue ( )

	interfaces to stdio FILE structure - __fbufsize ( )

	interfaces to stdio FILE structure - __flbf ( )

	interfaces to stdio FILE structure - _flushlbf ( )

	interfaces to stdio FILE structure - __fpending ( )

	interfaces to stdio FILE structure - __fpurge ( )

	interfaces to stdio FILE structure - __freadable ( )

	interfaces to stdio FILE structure - __freading ( )

	interfaces to stdio FILE structure - __fsetlocking ( )

	interfaces to stdio FILE structure - __fwritable ( )

	interfaces to stdio FILE structure - __fwriting ( )

	Interprocess Communication, create a new FIFO - mkfifo ( )

	invoke isa-specific executable - isaexec ( )

	isaexec - invoke isa-specific executable ( )

	isalnum - character handling ( )

	isalpha - character handling ( )

	isascii - character handling ( )

	isatty - test for a terminal device ( )

	isdigit - character handling ( )

	isenglish - wide-character code classification functions ( )

	isgraph - character handling ( )

	isideogram - wide-character code classification functions ( )

	islower - character handling ( )

	isnumber - wide-character code classification functions ( )

	isphonogram - wide-character code classification functions ( )

	isprint - character handling ( )

	ispunct - character handling ( )

	isspace - character handling ( )

	isspecial - wide-character code classification functions ( )

	isupper - character handling ( )

	iswalnum - wide-character code classification functions ( )

	iswalpha - wide-character code classification functions ( )

	iswascii - wide-character code classification functions ( )

	iswcntrl - wide-character code classification functions ( )

	iswctype - test character for specified class ( )

	iswdigit - wide-character code classification functions ( )

	iswgraph - wide-character code classification functions ( )

	iswlower - wide-character code classification functions ( )

	iswprint - wide-character code classification functions ( )

	iswpunct - wide-character code classification functions ( )

	iswspace - wide-character code classification functions ( )

	iswupper - wide-character code classification functions ( )

	iswxdigit - wide-character code classification functions ( )

	isxdigit - character handling ( )


K

	killpg - send signal to a process group ( )


L

	labs - return absolute value of long integer ( )

	language information - nl_langinfo ( )

	ldexp - load exponent of a floating point number ( )

	ldiv - compute quotient and remainder ( )

	lfmt - display error message in standard format and pass to logging and monitoring services ( )

	linear search and update routine
		- lfind ( )
		- lsearch ( )

	llabs - return absolute value of long long integer ( )

	lldiv - compute quotient and remainder ( )

	lltostr - string conversion routines ( )

	load exponent of a floating point number - ldexp ( )

	locale, modify and query a program's locale - setlocale ( )

	localeconv - get numeric formatting information ( )

	lock, apply or remove advisory lock on open file - flock ( )

	lock address space, - mlockall ( )

	lock memory pages, - mlock ( )

	lockf - allows sections of file to be locked ( )

	log message with a stdarg argument list - vsyslog ( )

	login name
		- getlogin ( )
		- getlogin_r ( )

	_longjmp - non-local goto ( ) ( )

	longjmp - non-local goto ( ) ( )


M

	madvise - provide advice to VM system ( )

	make modified instructions executable - sync_instruction_memory ( )

	makecontext - manipulate user contexts ( )

	malloc - memory allocator ( )

	manipulate sets of signals - sigsetops ( )
		sigaddset ( )
		sigdelset ( )
		sigemptyset ( )
		sigfillset ( )
		sigismember ( )

	match filename or path name - fnmatch ( )

	mblen - get number of bytes in a character ( )

	mbrlen - get number of bytes in a character (restartable) ( )

	mbrtowc - convert a character to a wide-character code (restartable) ( )

	mbsinit - determine conversion object status ( )

	mbsrtowcs - convert a character string to a wide-character string (restartable) ( )

	mbstowcs - convert a character string to a wide-character string ( )

	mbtowc - convert a character to a wide-character code ( )

	mctl - memory management control ( )

	memory - memory operations ( )

	memory, optimizing usage of user mapped memory - madvise ( )

	memory allocator - bsdmalloc ( )

	memory allocator
		- alloca ( )
		- calloc ( ) ( ) ( ) ( )

	memory allocator - bsdmalloc
		free ( )

	memory allocator
		- free ( ) ( ) ( ) ( )
		- mallinfo ( )

	memory allocator - bsdmalloc
		malloc ( )

	memory allocator
		- malloc ( ) ( ) ( ) ( )
		- mallopt ( )
		- memalign ( )

	memory allocator - bsdmalloc
		realloc ( )

	memory allocator
		- realloc ( ) ( ) ( ) ( )
		- valloc ( )

	memory lock or unlock, calling process - plock ( )

	memory management - mctl ( )

	memory management
		get system page size - getpagesize ( )
		lock address space - mlockall ( )
		lock pages in memory - mlock ( )
		synchronize memory with physical storage - msync ( )
		unlock address space - munlockall ( )
		unlock pages in memory - munlock ( )

	memory operations
		- memccpy ( )
		- memchr ( )
		- memcmp ( )
		- memcpy ( )
		- memmove ( )
		- memory ( )
		- memset ( )

	message catalog
		open/catalog - catopen, catclose ( )
		read a program message - catgets ( )

	message handling functions
		- bindtextdomain ( )
		- dcgettext ( )
		- dgettext ( )
		- gettext ( )
		- textdomain ( )

	messages
		display a message on stderr or system console - fmtmsg ( )
		print system error messages - perror ( )
		system signal messages - psignal ( )

	mkfifo - create a new FIFO ( )

	mkstemp - make a unique file name ( )

	mktemp - make a unique file name ( )

	mktime - converts a tm structure to a calendar time ( )

	modf - decompose floating-point number ( )

	modff - decompose floating-point number ( )

	monitor - prepare process execution profile ( )

	msync - synchronize memory with physical storage ( )


N

	named pipe, create a new one - mkfifo ( )

	network group entry
		- endnetgrent ( )
		- getnetgrent ( )
		- getnetgrent_r ( )
		- innetgr ( )
		- setnetgrent ( )

	nextkey - data base subroutines ( )

	nftw - walk a file tree ( )

	nice - change priority of a process ( )

	nl_langinfo - language information ( )

	nlist - get entries from symbol table ( )

	non-local goto - setjmp ( ) ( )
		_longjmp ( )
		longjmp ( ) ( )
		_setjmp ( )
		siglongjmp ( )
		sigsetjmp ( )

	non-local goto
		- _longjmp ( )
		- _setjmp ( )

	numbers, convert to strings - econvert ( )


O

	offsetof - offset of structure member ( )

	open a shared object - dlopen ( )

	open a stream - fopen ( )

	open a stream - freopen ( )

	open directory - opendir ( )

	opendir - open directory ( )

	openlog - control system log ( )

	output conversion, wsprintf - convert to wchar_t string ( )

	output conversion, formatted
		- fprintf ( )
		- printf ( )
		- sprintf ( )
		- vfprintf ( )
		- vprintf ( )
		- vsprintf ( )


P

	page size, system, get - getpagesize ( )

	password databases
		lock the lock file - lckpwdf ( )
		unlock the lock file - ulckpwdf ( )

	passwords
		get password entry from a file - fgetpwent ( )
		get password entry from a file - fgetpwent_r ( )
		get password entry in user database - endpwent ( )
		get password entry in user database - getpwent ( )
		get password entry in user database - getpwent_r ( )
		get password entry in user database - getpwnam ( )
		get password entry in user database - getpwnam_r ( )
		get password entry in user database - getpwuid ( )
		get password entry in user database - getpwuid_r ( )
		get password entry in user database - setpwent ( )
		get passwd entry from UID - getpw ( )
		write password file entry - putpwent ( )

	passwords, shadow
		get shadow password database entry - endspent ( )
		get shadow password database entry - fgetspent ( )
		get shadow password database entry - getspent ( )
		get shadow password database entry - getspnam ( )
		get shadow password database entry - setspent ( )
		get shadow password database entry (reentrant) - fgetspent_r ( )
		get shadow password database entry (reentrant) - getspent_r ( )
		get shadow password database entry (reentrant) - getspnam_r ( )
		write shadow password file entry - putspent ( )

	path name, return last element - path name ( )

	pclose - initiate pipe to/from a process ( )

	perform word expansions
		- wordexp ( )
		- wordfree ( )

	perror - print system error messages ( )

	pfmt - display error message in standard format ( )

	pipes
		initiate to/from a process - pclose ( )
		initiate to/from a process - popen ( )

	plock - lock or unlock into memory process, text, or data ( )

	popen - initiate pipe to/from a process ( )

	print formatted output
		- fprintf ( )
		- printf ( )
		- snprintf ( )
		- sprintf ( )

	print formatted output of a variable argument list
		- vfprintf ( )
		- vprintf ( )
		- vsnprintf ( )
		- vsprintf ( )

	print formatted wide-character output
		- fwprintf ( )
		- swprintf ( )
		- wprintf ( )

	printf - formatted output conversion ( )

	printf - print formatted output ( )

	Process Code string operations - wstring ( )

	Process Code string operations - wscasecmp, wscasecmp ( )

	Process Code string operations - wscol, wscol ( )

	Process Code string operations - wsdup, wsdup ( )

	Process Code string operations - wsncasecmp, wsncasecmp ( )

	process statistics, prepare execution profile - monitor ( )

	processes
		change priority - nice ( )
		duplicate an open file descriptor - dup2 ( )
		generate path name for controlling terminal - ctermid, ctermid_r ( )
		get character-string representation - cuserid ( )
		initiate pipe to/from a process - popen, pclose ( )
		manipulate user contexts - makecontext, swapcontext ( )
		memory lock or unlock - plock ( )
		prepare execution profile - monitor ( )
		report CPU time used - clock ( )
		send signal to a process group - killpg ( )
		send signal to program - raise ( )
		suspend execution for interval - sleep ( )
		terminate process - exit ( )
		terminate the process abnormally - abort ( )
		wait for process to terminate or stop - WIFEXITED ( )
		wait for process to terminate or stop - WIFSIGNALED ( )
		wait for process to terminate or stop - WIFSTOPPED ( )
		wait for process to terminate or stop - wait ( )

	profiling utilities, prepare process execution profile - monitor ( )

	program assertion, verify - assert ( )

	program messages
		open/close a message catalog - catopen, catclose ( )
		read - catgets ( )

	programs, last locations - end, etext, edata ( )

	pseudo-terminal device
		get name of the slave pseudo-terminal device - ptsname ( )
		grant access to the slave pseudo-terminal device - grantpt ( )

	pseudorandom number functions
		- initstate ( )
		- random ( )
		- setstate ( )
		- srandom ( )

	psiginfo - system signal messages ( )

	psignal - system signal messages ( ) ( )

	ptsname - get name of the slave pseudo-terminal device ( )

	push byte back into input stream - ungetc ( )

	push wide-character code back into input stream - ungetwc ( )

	put a byte on a stream
		- fputc ( )
		- putc ( )
		- putc_unlocked ( )
		- putchar ( )
		- putchar_unlocked ( )
		- putw ( )

	put wide character string on a stream - fputws ( )

	putc - put a byte on a stream ( )

	putc_unlocked - put a byte on a stream ( )

	putchar - put a byte on a stream ( )

	putchar_unlocked - put a byte on a stream ( )

	putenv - change or add value to environment ( )

	putmntent - get mnttab file information ( )

	putpwent - write password file entry ( )

	putspent - write shadow password file entry ( )

	pututline - user accounting database functions ( )

	pututxline - user accounting database functions ( )

	putw - put a byte on a stream ( )

	putws - convert a string of Process Code characters to EUC characters and put it on a stream ( )


Q

	qeconvert - convert number to ASCII ( )

	qfconvert - convert number to ASCII ( )

	qgconvert - convert number to ASCII ( )

	qsort - quick sort ( )

	quadruple_to_decimal - decimal record from quadruple-precision floating ( )

	queues, insert/remove element from a queue - insque, remque ( )


R

	raise - send signal to program ( )

	rand - simple random number generator ( )

	rand - simple random-number generator ( )

	random - pseudorandom number functions ( )

	random number generator
		- drand48 ( )
		- erand48 ( )
		- jrand48 ( )
		- lcong48 ( )
		- lrand48 ( )
		- mrand48 ( )
		- nrand48 ( )
		- rand ( )
		- seed48 ( )
		- srand48 ( )

	random number generator, simple
		- rand ( )
		- srand ( )

	re_comp - compile and execute regular expressions ( )

	re_exec - compile and execute regular expressions ( )

	read a string of characters without echo - getpass ( )

	read a directory entry - readdir ( )

	read a string of characters without echo, - getpassphrase ( )

	read directory
		- readdir ( )
		- readdir_r ( )

	readdir - read a directory entry ( )

	readdir - read directory ( )
		POSIX ( )

	readdir_r - read directory ( )

	realloc - memory allocator ( )

	realpath - resolve pathname ( )

	reboot - reboot system or halt processor ( )

	regcmp - compile regular expression ( )

	regcomp - regular expression matching ( )

	regerror - regular expression matching ( )

	regex - execute regular expression ( )

	regexec - regular expression matching ( )

	regfree - regular expression matching ( )

	register a function to run at process termination or object unloading- atexit ( )

	regular expression matching
		- regcomp ( )
		- regerror ( )
		- regexec ( )
		- regfree ( )

	regular expressions, compile and execute - regcmp, regex ( )

	remove - remove file ( )

	remque - remove elment from a queue ( )

	reposition a file-position indicator in a stream
		- fseek ( )
		- fseeko ( )

	reset file position indicator in a stream - rewind ( )

	reset position of directory stream to the beginning of a directory - rewinddir ( )

	resetmnttab - get mnttab file information ( )

	resolve pathname - realpath ( )

	resource utilization, get information - getrusage ( )

	return a file offset for a file descriptor - tell ( )

	return a file offset in a stream
		- ftell ( )
		- ftello ( )

	return pathname of executable - getexecname ( )

	rewind - reset file position indicator in a stream ( )

	rewinddir - reset position of directory stream to the beginning of a directory ( )

	rindex - string operations ( )


S

	scan a directory
		- alphasort ( )
		- scandir ( )

	scandir - scan a directory ( )

	scanf - convert formatted input ( )
		Conversion Characters ( )
		Conversion Specifications ( )

	scheduling priority, change priority of a process - nice ( )

	search functions
		binary search a sorted table - bsearch ( )
		linear search and update routine - lsearch, lfind ( )
		manage hash search tables - hsearch ( )

	seconvert - convert number to ASCII ( )

	seekdir - set position of directory stream ( )

	select - synchronous I/O multiplexing ( )

	send a ``break'' for a specific duration - tcsendbreak ( )

	set and/or get alternate signal stack context - sigstack ( )

	set and/or get signal stack context - sigstack ( )

	set encoding key - setkey ( )

	set foreground process group ID - tcsetpgrp ( )

	set input baud rate, - cfsetispeed ( )

	set output baud rate, - cfsetospeed ( )

	set position of directory stream - seekdir ( )

	set stream orientation - fwide ( )

	set the parameters associated with the terminal - tcsetattr ( )

	set wide-characters in memory - wmemset ( )

	setcat - define default catalog ( )

	setgrent - group database entry functions ( )

	sethostname - set name of current host ( )

	_setjmp - non-local goto ( ) ( )

	setjmp - non-local goto ( ) ( )

	setkey - set encoding key ( )

	setlabel - define the label for pfmt() and lfmt(). ( )

	setlocale - modify and query a program's locale ( )

	setlogmask - control system log ( )

	setpriority - get or set process scheduling priority ( )

	setpwnam - get password entry from user database ( )

	setspent - get shadow password database entry ( )

	setstate - pseudorandom number functions ( )

	settimeofday - set date and time ( )

	settimeofday - set system's notion of current Greenwich time ( )

	setusershell() - function ( )

	setutent - user accounting database functions ( )

	setutxent - user accounting database functions ( )

	severity levels, applications, build a list for use with fmtmsg - addseverity ( )

	sfconvert - convert number to ASCII ( )

	sgconvert - convert number to ASCII ( )

	shared object
		close - dlclose ( )
		get address of symbol - dlsym ( )
		get diagnostic information - dlerror ( )
		open - dlopen ( )

	shell command, issue one - system ( )

	sig2str - translation between signal name and signal number ( )

	sigaddset - manipulate sets of signals ( )

	sigdelset - manipulate sets of signals ( )

	sigemptyset - manipulate sets of signals ( )

	sigfillset - manipulate sets of signals ( )

	sigfpe() function ( )

	sighold - adds sig to the calling process's signal mask ( )

	sigignore - sets the disposition of sig to SIG_IGN ( )

	siginterrupt - allow signals to interrupt functions ( )

	sigismember -manipulate sets of signals ( )

	siglongjmp - non-local goto ( )

	signal - modify signal disposition ( )

	signal - simplified software signal facilities ( )

	signal
		schedule after interval in microseconds - ualarm ( )
		suspend execution for interval in microseconds - usleep ( )

	simplified signal facilities - bsd_signal ( )

	signal management, simplified, for application processes - signal ( )

	signal messages, system
		- psignal ( ) ( )

	signals, block
		- sigblock ( )
		- sigmask ( )
		- sigpause ( )
		- sigsetmask ( )

	signals, software
		- gsignal ( )
		- ssignal ( )

	sigpause - removes sig from the calling process's signal mask and suspends the calling process until a signal is received ( )

	sigrelse - removes sig from the calling process's signal mask ( )

	sigset - modify signal disposition ( )

	sigsetjmp - non-local goto ( )

	sigsetops - manipulate sets of signals ( )

	sigstack - set and/or get alternate signal stack context ( )

	sigstack - set and/or get signal stack context ( )

	sigvec - software signal facilities ( )

	single-byte to wide-character conversion - btowc ( )

	single_to_decimal - decimal record from single-precision floating ( )

	sleep - suspend execution for interval ( )

	sleep, suspend execution for interval in microseconds - usleep ( )

	snprintf - print formatted output ( )

	software signals
		- gsignal ( )
		- ssignal ( )

	sort, quick - qsort ( )

	sprintf - formatted output conversion ( )

	sprintf - print formatted output ( )

	srand - reset simple random number generator ( )

	srandom - pseudorandom number functions ( )

	sscanf - convert formatted input ( )

	stdio - standard buffered input/output package ( )

	sting collation, - strcoll ( )

	store - data base subroutines ( )

	str2sig - translation between signal name and signal number ( )

	strcasecmp - string operations ( )

	strcat - string operations ( )

	strchr - string operations ( )

	strcmp - string operations ( )

	strcpy - string operations ( )

	strcspn - string operations ( )

	strdup - string operations ( )

	stream
		convert a string of Process Code characters to EUC characters and put it on a stream - putws ( )
		open - fopen ( )

	stream, assign buffering
		- setbuf ( )
		- setvbuf ( )

	stream, get string
		- fgets ( )
		- gets ( )

	stream, put a string
		- fputs ( )
		- puts ( )

	stream status inquiries
		- clearerr ( )
		- feof ( )
		- ferror ( )
		- fileno ( )

	STREAMS
		attach a STREAMS-based file descriptor to an object in the file system name space - fattach ( )
		buffered binary input/output - fread ( )
		buffered binary input/output - fwrite ( )
		test file descriptor for a STREAMS file - isastream ( )

	strfmon - convert monetary value to string ( )

	strftime - convert date and time to string ( )

	string - string operations ( )

	string operations - strcasecmp ( )

	string operations - strcat ( )

	string operations - strchr ( )

	string operations - strcmp ( )

	string operations - strcpy ( )

	string operations - strcspn ( )

	string operations - strdup ( )

	string operations - string ( )

	string operations - strlcat ( )

	string operations - strlcpy ( )

	string operations - strlen ( )

	string operations - strncasecmp ( )

	string operations - strncat ( )

	string operations - strncmp ( )

	string operations - strncpy ( )

	string operations - strpbrk ( )

	string operations - strrchr ( )

	string operations - strspn ( )

	string operations - strstr ( )

	string operations - strtok ( )

	string operations - strtok_r ( )

	string conversion routines
		- atoi ( )
		- atol ( )
		- atoll ( )
		- lltostr ( )
		- strtol ( )
		- strtoll ( )
		- ulltostr ( )

	string encoding function - crypt ( )

	string operation, get error message string - strerror ( )

	string operations
		bit and byte - bstring ( )
		- index ( )
		- rindex ( )

	string_to_decimal - decimal record from character string ( )

	string transformation - strxfrm ( )

	strings, convert from numbers - econvert ( )

	strlcat - string operations ( )

	strlcpy - string operations ( )

	strlen - string operations ( )

	strncasecmp - string operations ( )

	strncat - string operations ( )

	strncmp - string operations ( )

	strncpy - string operations ( )

	strpbrk - string operations ( )

	strptime - date and time conversion ( )

	strrchr - string operations ( )

	strsignal - get name of signal ( )

	strspn - string operations ( )

	strstr - string operations ( )

	strtod - convert string to double-precision number ( )

	strtok - string operations ( )

	strtok_r - string operations ( )

	strtol - string conversion routines ( )

	strtoll - string conversion routines ( )

	strtoul - convert string to unsigned long ( )

	strtows - code conversion for Process Code and File Code ( )

	strxfrm - string transformation ( )

	suspend or restart the transmission or reception of data - tcflow ( )

	swab - swap bytes ( )

	swap bytes - swab ( )

	swapcontext - manipulate user contexts ( )

	swprintf - print formatted wide-character output ( )

	swscanf - convert formatted wide-character input ( )

	symbol address, get address in shared object or executable - dlsym ( )

	symbol table, get entries - nlist ( )

	sync_instruction_memory - make modified instructions executable ( )

	synchronous I/O multiplexing
		- FD_CLR ( )
		- FD_ISSET ( )
		- FD_SET ( )
		- select ( ) ( )

	sys_siglist - system signal messages list ( )

	syscall - indirect system call ( )

	sysconf - get configurable system variables ( )

	syslog - control system log ( )

	system - issue shell command ( )

	system error messages, print - perror ( )

	system signal messages, - psignal ( )

	system variables, get configurable ones - sysconf ( )


T

	tcdrain - wait for transmission of output ( )

	tcflow - suspend or restart the transmission or reception of data ( )

	tcflush - flush non-transmitted output data, non-read input data or both ( )

	tcgetattr - get the parameters associated with the terminal ( )

	tcgetpgrp - get foreground process group ID ( )

	tcgetsid - get process group ID for session leader for controlling terminal ( )

	tcsendbreak - send a ``break'' for a specific duration ( )

	tcsetattr - set the parameters associated with the terminal ( )

	tcsetpgrp - set foreground process group ID ( )

	tdelete - manage binary search trees ( )

	tell - return a file offset for a file descriptor ( )

	telldir - current location of a named directory stream ( )

	tempnam - create a name for a temporary file ( )

	terminal, find the slot of the current user in the user accounting database - ttyslot ( )

	terminal device, slave pseudo
		get name - ptsname ( )
		grant access - grantpt ( )

	terminal ID, generate path name for controlling terminal - ctermid, ctermid_r ( )

	termios - general terminal interface ( )

	test character for specified class - iswctype ( )

	test for a terminal device - isatty ( )

	text processing utilities
		compile and execute regular expressions - regcmp, regex ( )
		quick sort - qsort ( )

	text string, - gettxt ( )

	textdomain - select domain of messages ( )

	tfind - manage binary search trees ( )

	time, computes the difference between two calendar times - difftime ( )

	time, calendar, convert from a tm structure - mktime ( )

	time accounting, for current process - times ( )

	time and date
		convert to string - asctime ( )
		convert to string - ctime ( )
		convert to string - gmtime ( )
		convert to string - localtime ( )
		convert to string - tzset ( )
		convert to string - tzsetwall ( )
		convert user format date and time - getdate ( )
		get - ftime ( )
		- settimeofday ( ) ( )

	time of day, get and set - gettimeofday, settimeofday ( )

	times - get process times ( )

	tmpfile - create a temporary file ( )

	tmpnam - create a name for a temporary file ( )

	toascii - translate integer to a 7-bit ASCII character ( )

	_tolower - transliterate upper-case characters to lower-case ( )

	tolower - transliterate upper-case characters to lower-case ( )

	_toupper - transliterate lower-case characters to upper-case ( )

	toupper - transliterate lower-case characters to upper-case ( )

	towctrans - wide-character mapping ( )

	towlower - transliterate upper-case wide-character code to lower-case ( )

	towupper - transliterate lower-case wide-character code to upper-case ( )

	translate address to symbolic information - dladdr, dladdr1 ( )

	translate integer to a 7-bit ASCII character - toascii ( )

	translation between signal name and signal number - str2sig ( )
		sig2str ( )

	transliterate lower-case characters to upper-case - _toupper ( )

	transliterate lower-case characters to upper-case - toupper ( )

	transliterate lower-case wide-character code to upper-case - towupper ( )

	transliterate upper-case characters to lower-case - _tolower ( )

	transliterate upper-case characters to lower-case - tolower ( )

	transliterate upper-case wide-character code to lower-case - towlower ( )

	truncate - set a file to a specified length ( )

	tsearch - manage binary search trees ( )

	ttyname - find pathname of a terminal ( )
		POSIX ( )

	ttyname_r - find pathname of a terminal ( )

	ttyslot - find the slot of the current user in the user accounting database ( )

	twalk - manage binary search trees ( )


U

	ualarm - schedule signal after interval in microseconds ( )

	ulltostr - string conversion routines ( )

	ungetc - push byte back into input stream ( )

	ungetwc - push wide-character code back into input stream ( )

	unlock a pseudo-terminal master/slave pair - unlockpt ( )

	unlock address space, - munlockall ( )

	unlock memory pages, - munlock ( )

	unlockpt - unlock a pseudo-terminal master/slave pair ( )

	updwtmp - user accounting database functions ( )

	updwtmpx - user accounting database functions ( )

	user accounting database functions - endutent ( )

	user accounting database functions - endutxent ( )

	user accounting database functions - getutent ( )

	user accounting database functions - getutid ( )

	user accounting database functions - getutline ( )

	user accounting database functions - getutmp ( )

	user accounting database functions - getutmpx ( )

	user accounting database functions - getutxent ( )

	user accounting database functions - getutxid ( )

	user accounting database functions - getutxline ( )

	user accounting database functions - pututline ( )

	user accounting database functions - pututxline ( )

	user accounting database functions - setutent ( )

	user accounting database functions - setutxent ( )

	user accounting database functions - updwtmp ( )

	user accounting database functions - updwtmpx ( )

	user accounting database functions - utmpname ( )

	user accounting database functions - utmpxname ( )

	user context
		- makecontext ( )
		- swapcontext ( )

	user IDs, get character-string representation - cuserid ( )

	usleep - suspend execution for interval in microseconds ( )

	utmpname - user accounting database functions ( )

	utmpx file, find the slot of current user - ttyslot ( )

	utmpxname - user accounting database functions ( )


V

	vfprintf - formatted output conversion ( )

	vfstab file, - getvfsent ( )

	vfwprintf - wide-character formatted output of a stdarg argument list ( )

	virtual memory, optimizing usage of user mapped memory - madvise ( )

	vlfmt - display error message in standard format and pass to logging and monitoring services ( )

	vpfmt - display error message in standard format and pass to logging and monitoring services ( )

	vprintf - formatted output conversion ( )

	vsprintf - formatted output conversion ( )

	vswprintf - wide-character formatted output of a stdarg argument list ( )

	vsyslog - log message with a stdarg argument list ( )

	vwprintf - wide-character formatted output of a stdarg argument list ( )


W

	wait - wait for process to terminate or stop ( )

	waitpid - wait for process to terminate or stop ( )

	wait3 - wait for process to terminate or stop ( ) ( )

	wait4 - wait for process to terminate or stop ( ) ( )

	wait for process to terminate or stop
		- wait3 ( )
		- wait4 ( )

	wait for transmission of output - tcdrain ( )

	watof - convert wide character string to double-precision number ( )

	watoi - convert wide character string to long integer ( )

	watol - convert wide character string to long integer ( )

	watoll - convert wide character string to long integer ( )

	wchar_t string, number conversion - wscanf ( )

	wcrtomb - convert a wide-character code to a character (restartable) ( )

	wcscat - wide-character string operations ( )

	wcschr - wide-character string operations ( )

	wcscmp - wide-character string operations ( )

	wcscoll - wide character string comparison using collating information ( )

	wcscpy - wide-character string operations ( )

	wcscspn - wide-character string operations ( )

	wcsetno - get information on EUC codesets ( )

	wcsftime - convert date and time to wide character string ( )

	wcslen - wide-character string operations ( )

	wcsncat - wide-character string operations ( )

	wcsncmp - wide-character string operations ( )

	wcsncpy - wide-character string operations ( )

	wcspbrk - wide-character string operations ( )

	wcsrchr - wide-character string operations ( )

	wcsrtombs - convert a wide-character string to a character string (restartable) ( )

	wcsspn - wide-character string operations ( )

	wcsstr - find a wide-character substring ( )

	wcstod - convert wide character string to double-precision number ( )

	wcstok - wide-character string operations ( )

	wcstol - convert wide character string to long integer ( )

	wcstombs - convert a wide-character string to a character string ( )

	wcstoul - convert wide character string to unsigned long ( )

	wcstring - wide-character string operations ( )

	wcswcs - wide-character string operations ( )

	wcswidth - number of column positions of a wide-character string ( )

	wcsxfrm - wide character string transformation ( )

	wctob - wide-character to single-byte conversion ( )

	wctomb - convert a wide-character code to a character ( )

	wctrans - define character mapping ( )

	wctype - define character class ( )

	wcwidth - number of column positions of a wide-character code ( )

	wide character string to long integer, convert
		- watoi ( )
		- watol ( )
		- watoll ( )
		- wcstol ( )
		- wstol ( )

	wide-character code classification functions
		- isenglish ( )
		- isideogram ( )
		- isnumber ( )
		- isphonogram ( )
		- isspecial ( )
		- iswalnum ( )
		- iswalpha ( )
		- iswascii ( )
		- iswcntrl ( )
		- iswdigit ( )
		- iswgraph ( )
		- iswlower ( )
		- iswprint ( )
		- iswpunct ( )
		- iswspace ( )
		- iswupper ( )
		- iswxdigit ( )

	wide-character formatted output of a stdarg argument list
		- vfwprintf ( )
		- vswprintf ( )
		- vwprintf ( )

	wide-character mapping - towctrans ( )

	wide character string comparison using collating information
		- wcscoll ( )
		- wscoll ( )

	wide-character string operations
		- wcscat ( )
		- wcschr ( )
		- wcscmp ( )
		- wcscpy ( )
		- wcscspn ( )
		- wcslen ( )
		- wcsncat ( )
		- wcsncmp ( )
		- wcsncpy ( )
		- wcspbrk ( )
		- wcsrchr ( )
		- wcsspn ( )
		- wcstok ( )
		- wcstring ( )
		- wcswcs ( )
		- windex ( )
		- wrindex ( )

	wide character string transformation
		- wcsxfrm ( )
		- wsxfrm ( )

	wide-character to single-byte conversion - wctob ( )

	windex - wide-character string operations ( )

	wmemchr - find a wide-character in memory ( )

	wmemcmp - compare wide-characters in memory ( )

	wmemcpy - copy wide-characters in memory ( )

	wmemmove - copy wide-characters in memory with overlapping areas ( )

	wmemset - set wide-characters in memory ( )

	wordexp - perform word expansions ( )

	wordfree - perform word expansions ( )

	working directory, get pathname - getwd ( )

	wprintf - print formatted wide-character output ( )

	wrindex - wide-character string operations ( )

	wscanf - convert formatted wide-character input ( )

	wscasecmp - Process Code string operations ( )

	wscol - Process Code string operations ( )

	wscoll - wide character string comparison using collating information ( )

	wsdup - Process Code string operations ( )

	wsncasecmp - Process Code string operations ( )

	wsprintf - formatted output conversion ( )

	wsscanf - formatted input conversion ( )

	wstod - convert wide character string to double-precision number ( )

	wstol - convert wide character string to long integer ( )

	wstostr - code conversion for Process Code and File Code ( )

	wsxfrm - wide character string transformation ( )

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