Section C.4. HP-UX and Linux Library API Comparison Table

C.4. HP-UX and Linux Library API Comparison Table

Table C-4. HP-UX and Linux Library API Comparison Table

HP-UX Library Calls	Linux Equivalent	Description
a64l, l64a	a64l, l64a	Convert between long integer and base-64 ASCII string.
l64a_r	None	Convert between long integer and base-64 ASCII string (reentrant).
abs	abs	Return integer absolute value.
aclentrystart	None	Convert string to access control list (ACL) structure.
aclsort	None	Sort ACL entries on JFS.
acltostr	None	Convert access control list (ACL) structure to string form.
acos, acosf, acosl	acos, acosf, acosl	Arccosine functions.
acosw, acosq	None	Arccosine functions.
acosd, acosdf, acosdl, acosdw, acosdq	None	Degree-valued arccosine functions.
acosh, acoshf, acoshl	acosh, acoshf, acoshl	Arc hyperbolic cosine functions.
acoshw acoshq	None	Arc hyperbolic cosine functions.
add_wch, mvadd_wch, mvwadd_wch, wadd_ch	add_wch, mvadd_wch, mvwadd_wch, wadd_ch	Add a complex character and rendition to a window.
add_wchstr, mvadd_wchnstr, mvadd_wchstr, mvwadd_wchnstr, mvwadd_wchstr, add_wchnstr, wadd_wchstr	add_wchstr, mvadd_wchnstr, mvadd_wchstr, mvwadd_wchnstr, mvwadd_wchstr, wadd_wchnstr, wadd_wchstr (libncurses)	Add an array of complex characters and renditions to a window.
addch, mvaddch, mvwaddch, waddch	addch, mvaddch, mvwaddch, waddch (libncurses)	Add a single-byte character and rendition to a window and advance the cursor.
addmntent	addmntent	Get file system descriptor file entry.
addstr, mvaddnstr, mvaddstr, mvwaddnstr, mvwaddstr, waddnstr, waddstr	addstr, mvaddnstr, mvaddstr, mvwaddnstr, mvwaddstr, waddnstr, waddstr (lincurses)	Add a string of multibyte characters without rendition to a window and advance cursor.
addnwstr, addwstr, mvaddnwstr, mvaddwstr, mvwaddnwstr, mvwaddwstr, waddnwstr, waddwstr	addnwstr, addwstr, mvaddnwstr, mvaddwstr, mvwaddnwstr, mvwaddwstr, waddnwstr, waddwstr (libncurses)	Add a wide-character string to a window and advance the cursor.
alloca	alloca	Allocate space from the stack.
alphasort	alphasort	Sort a directory pointer array.
asctime, asctime_r	asctime, asctime_r	Convert date and time to string.
asin, asinf, asinl, asinw, asinq	asin, asinf, asinl	Arcsine functions.
asinh, asinhf asinhl, asinhw, asinhq	asinh, asinhf asinhl	Arc hyperbolic sine functions.
assert	assert	Verify program assertion.
atan, atanf, atanl, atanw, atanq	atan, atanf, atanl	Arctangent functions.
atan2, atan2f, atan2l, atan2w, atan2q	atan2, atan2f, atan2l	Arctangent-and-quadrant functions.
atan2d, atan2df	None	Degree-valued arctangent-and-quadrant functions.
atand, atandf	atand, atandf, atanl	Degree-valued arctangent functions.
atanh, atanhf, atanhl, atanhw, atanhq	atanh, atanhf, atanhl	Arc hyperbolic tangent functions.
atexit	atexit	Register a function to be called at program termination.
atof	atof	Convert string to double-precision number.
atoi	atoi	Convert string to integer.
atol	atol	Convert string to integer.
attr_off, attr_on, attr_set, color_set, wattr_get, wattr_off, wattr_on, wattr_set, wcolor_set	attr_off, attr_on, attr_set, color_set, wattr_get, wattr_off, wattr_on, wattr_set, wcolor_set (libncurses)	Window attribute control functions.
attron, attrset, wattroff, wattron, wattrset	attron, attrset, wattroff, wattron, wattrset (libncurses)	Restricted window attribute control functions.
auth_destroy	auth_destroy	Library routines for client-side RPC authentication.
authdes_getucred	authdes_getucred	Library routines for secure remote procedure calls.
authdes_seccreate	None	Library routines for secure remote procedure calls.
authnone_create	authnone_create	Library routines for client-side RPC authentication.
authsys_create	authunix_create	Library routines for client-side RPC authentication.
authsys_create_default	authunix_create_default	Library routines for client-side RPC authentication.
basename, dirname	basename, dirname	Extract components of a path name.
baudrate	baudrate (libncurses)	Get terminal baud rate.
bcmp	bcmp	Memory operations, compare bytes.
bcopy	bcopy	Memory operations, copy bytes.
beep	beep (libncurses)	Audible signal.
bgets	None	Read stream up to next delimiter.
bigcrypt	None[13]	Generate hashing encryption on large strings.
bindresvport	bindresvport	Bind a socket to a privileged IP port.
bkgd, bkgdset, getbkgd, wbkgd, wbkgdset	bkgd, bkgdset, getbkgd, wbkgd, wbkgdset (libncurses)	Set or get background character and rendition using a single-byte character.
bkgrnd, bkgrndset, getbkgrnd, wbkgrnd, wbkgrndset, wgetbkgrnd	bkgrnd, bkgrndset, getbkgrnd, wbkgrnd, wbkgrndset, wgetbkgrnd (libncurses)	Set or get background character and rendition using a complex character.
blclose	None	Terminal block-mode library interface.
blget	None	Terminal block-mode library interface.
blopen, blread, blset	None	Terminal block-mode library interface.
box	box	Draw borders from complex characters and renditions.
box_set	box_set	Draw borders from single-byte characters and renditions.
bsd_signal	signal	Simplified signal facilities.
bsearch	bsearch	Binary search a sorted table.
bufsplit	None	Split buffer into fields.
		Write records into new wtmps and btmps database.
bwtmpname	None	Write records into new wtmps and btmps database.
byte_status	None	Process 16-bit characters.
byteorder: htonl, htons, ntohl, ntohs	htonl, htons, ntohl, ntohs	Convert values between host and network byte order.
bzero	bzero	Memory operations, clear bytes.
c_colwidth	None	Process 16-bit characters.
cabs, cabsf, cabsl, cabsw, cabsq	cabs, cabsf, cabsl	Complex absolute value functions.
cacos, cacosf, cacosl, cacosw, cacosq	cacos, cacosf, cacosl	Complex arccosine functions.
cacosh, cacoshf, cacoshl, cacoshq, cacoshw	cacosh, cacoshf, cacoshl	Complex arc hyperbolic cosine functions.
calloc	calloc	Allocate memory for array.
can_change_color, color_content, has_colors, init_color, init_pair, start_color, pair_content	can_change_color, color_content, has_colors, init_color, init_pair, start_color, pair_content (libncurses)	Color manipulation functions.
carg, cargf, cargl, cargw, cargq	carg, cargf, cargl	Complex argument functions.
casin, casinf, casinl, casinw, casinq	casin, casinf, casinl	Complex arcsine functions.
casinh, casinhf, casinhl, casinhw, casinhq	casinh, casinhf, casinhl	Complex arc hyperbolic sine functions.
catanh, catanhf, catanhl, catanhw, catanhq	catanh, catanhf, catanhl	Complex arc hyperbolic tangent functions.
catgets	catgets	Get a program message.
catopen, catclose	catopen, catclose	Open or close NLS message catalog for reading.
cbreak, nocbreak, noraw, raw	cbreak, nocbreak, noraw, raw (libncurses)	Input mode control functions.
cbrt, cbrtf, cbrtl, cbrtq, cbrtw	cbrt, cbrtf, cbrtl	Cube root function (float, long, and so on).
ccos, ccosf, ccosl, ccosw, ccosq	ccos, ccosf, ccosl	Complex cosine functions.
ccosh, ccoshf, ccoshl, ccoshw, ccoshq	ccosh, ccoshf, ccoshl	Complex hyperbolic cosine functions.
ceil, ceilf, ceill, ceilw, ceilq	ceil, ceilf, ceill	Rounding functions.
cexp, cexpf, cexpl, cexpw, cexpq	cexp, cexpf, cexpl	Complex exponential functions.
cfgetispeed, cfgetospeed	cfgetispeed, cfgetospeed	Get/set tty intput baud rate.
cfsetispeed, cfsetospeed	cfsetispeed, cfsetospeed	Get/set tty output baud rate.
chgat, mvchgat mvwchgat, wchgat	chgat, mvchgat mvwchgat, wchgat	Change renditions of characters in a window.
chownacl	None	Change owner and/or group in access control list.
cimag, cimagf	cimag, cimagf, cimagl	Complex imaginary-part functions.
clear, erase, wclear, werase	clear, erase, wclear, werase	Clear a window.
clearenv	clearenv	Clear the process environment.
clearerr	clearerr	Stream status inquiries.
clearerr_unlocked	clearerr_unlocked	Stream status inquiries.
clearok, idlok, leaveok, scrollok setscrreg, wsetscrreg	clearok, idlok, leaveok, scrollok setscrreg, wsetscrreg (libncurses)	Terminal output control functions.
clnt_call	clnt_call	Library routine for client-side calls, rpc.
clnt_control	clnt_control	Library routines for dealing with client handles, rpc.
clnt_create	clnt_create	Library routines for dealing with client handles, rpc.
clnt_create_vers	None	Library routines for dealing with client handles, rpc.
clnt_control, clnt_create, clnt_create_vers, clnt_destroy, clnt_dg_create, clnt_pcreateerror, clnt_raw_create, clnt_spcreateerror, clnt_tli_create, clnt_tp_create, clnt_vc_create, rpc_createerr	clnt_pcreateerror, clnt_geterr	Library routines for dealing with client handles.
clock	clock	Report CPU time used.
clog, clogf, clogl	clog, clogf, clogl	Complex logarithm functions.
closedir	closedir	Directory operations.
closelog	closelog	Control system log.
clrtobot, wclrtobot	clrtobot, wclrtobot	Clear from cursor to end of window.
clrtoeol, wclrtoeol	clrtoeol, wclrtoeol	Clear from cursor to end of line.
compile	None	Regular expression compile and match routines.
compound, compoundf, compoundl, compoundw, compoundq	None	Compound interest factor.
confstr	confstr	Get string-valued configuration values.
conj, conjf, conjl, conjw, conjq	conj, conjf, conjl	conjl Complex conjugate functions.
copydvagent	None	Copy device assignment structure.
copylist	None	Copy a file into memory.
copysign, copysignf, copysignl, copysignw, copysignq	copysign, copysignf, copysignl	Copysign functions.
copywin	copywin	Copy a region of the window.
cos, cosf, cosl	cos, cosf, cosl	Cosine functions.
cosh, coshf, coshl	cosh, coshf, coshl	Hyperbolic cosine functions.
cpacl, fcpacl	None	Copy access control list (ACL) to another file.
cpow, cpowf, cpowl	cpow, cpowf, cpowl	Complex power functions.
cproj, cprojf, cprojl	cproj, cprojf, cprojl	Complex projection functions.
cr_close	None	Close a crash dump descriptor.
cr_info	None	Retrieve crash dump information.
cr_isaddr	None	Validate whether physical page number was dumped.
cr_open	None	Open crash dump for reading.
cr_perror	None	Print libcrash error or warning message.
cr_read	None	Read from crash dump.
cr_set_node	None	Set crash dump node number.
cr_uncompress	None	Uncompress a file in a crash dump.
cr_verify	None	Verify integrity of crash dump.
creal, crealf, creall	creal, crealf, creall	Complex real-part functions.
crypt, crypt_r, encrypt, encrypt_r, setkey, setkey_r	crypt, crypt_r, encrypt, encrypt_r, setkey, setkey_r	Generate hashing encryption.
csin, csinf, csinl	csin, csinf, csinl	Complex sine functions.
csqrt, csqrtf, csqrtl	csqrt, csqrtf, csqrtl	Complex square root functions.
ctan, ctanf, ctanl	ctan, ctanf, ctanl	Complex tangent functions.
ctermid	ctermid	Generate filename for terminal.
ctime, ctime_r, localtime, localtime_r, difftime, mktime, gmtime, gmtime_r, asctime, asctime_r, timezone, daylight, tzname, tzset	ctime, ctime_r, localtime, localtime_r, difftime, mktime, gmtime, gmtime_r, asctime, asctime_r, timezone, daylight, tzname, tzset	Convert date and time to string.
character classification	character classification	Classify characters.
isalpha, isupper, islower, isdigit, isxdigit, isalnum, isspace, ispunct, isprint, isgraph, iscntrl, isascii	isalpha, isupper, islower, isdigit, isxdigit, isalnum, isspace, ispunct, isprint, isgraph, iscntrl, isascii
cur_term	cur_term (libncurses)	Current terminal information.
curs_set	curs_set (libncurses)	Set the cursor mode.
curscr	curscr (libncurses)	Current window.
cuserid	cuserid	Get character login name of the user.
datalock	None	Lock process into memory after allocating data and stack space.
daylight	daylight	Convert date and time to string.
db_initialize, db_create_table, db_destroy_table, db_first_entry, db_next_entry, db_reset_next_entry, db_list_entries, db_remove_entry, db_add_entry, db_table_exists, db_unload_table, db_checkpoint, db_standby, db_free_result	db_initialize, db_create_table, db_destroy_table, db_first_entry, db_next_entry, db_reset_next_entry, db_list_entries, db_remove_entry, db_add_entry, db_table_exists, db_unload_table, db_checkpoint, db_standby, db_free_result	Write data to a file.
dbminit, fetch, store, delete, firstkey, nextkey, dbmclose	dbminit, fetch, store, delete, firstkey, nextkey, dbmclose (db.h)	Database subroutines.
dbm_open, dbm_close, dbm_fetch, dbm_store, dbm_delete, dbm_firstkey, dbm_nextkey, dbm_error, dbm_clearerr	dbm_open, dbm_close, dbm_fetch, dbm_store, dbm_delete, dbm_firstkey, dbm_nextkey, dbm_error, dbm_clearerr (nbdm.h)	Database subroutines.
def_prog_mode, def_shell_mode, reset_prog_mode, reset_shell_mode	def_prog_mode, def_shell_mode, reset_prog_mode, reset_shell_mode (libncurses)	Low-level curses routines.
del_curterm, restartterm, set_curterm, setupterm	del_curterm, restartterm, set_curterm, setupterm (libncurses)	Interfaces to terminfo database.
delay_output	delay_output (libncurses)	Miscellaneous curses utility routine.
delch, mvdelch, mvwdelch, wdelch	delch, mvdelch, mvwdelch, wdelch (libncurses)	Delete character from a window.
deleteln, wdeleteln	deleteln, wdeleteln (libncurses)	Delete lines in a window.
delscreen	delscreen (libncurses)	Free storage associated with a screen.
delwin	delwin (libncurses)	Delete a window.
devnm	None	Map device ID to file path.
dial, undial	None	Establish an outgoing terminal line connection.
difftime	difftime	Difference between calendar times.
directory operations	directory operations	Directory operations.
opendir, readdir, telldir, seekdir, rewinddir, closedir	opendir, readdir, telldir, seekdir, rewinddir, closedir
dirname	dirname	Return path name of parent directory.
div, ldiv	div, ldiv	Integer division and remainder.
dladdr	None	Symbolic information for an address.
dld_getenv	None	Explicit load of shared libraries.
dlerror	dlerror	Get diagnostic information from dynamic linking process.
dlget	None	Retrieve information on loaded module (program or shared library).
dlgetmodinfo	None	Retrieve information on loaded module (program or shared library).
dlgetname	None	Retrieve name of load module.
dlmodadd	None	Register information about dynamically generated functions.
dlmodinfo	None	Retrieve information on loaded module (program or shared library).
dlmodremove	None	Remove information registered using dlmodadd.
dlmodremove	None	Remove information registered using dlmodadd.
dlopen	dlopen	Open a shared library.
dlclose	dlclose	Close a shared library.
dlsym	dlsym	Get address of symbol in shared object.
dn_comp, dn_expand, get_resfield, herror, res_init, res_mkquery, res_query, res_search, res_send, set_resfield	dn_comp, dn_expand, herror, res_init, res_mkquery, res_querydomain, res_search, res_send	Resolver routines.
doupdate, refresh, wnoutrefresh, wrefresh	doupdate, refresh, wnoutrefresh, wrefresh	Refresh windows and lines.
drand48, erand48, lrand48, nrand48, mrand48, jrand48, srand48, seed48, lcong48	drand48, erand48, lrand48, nrand48, mrand48, jrand48, srand48, seed48, lcong48	Generate uniformly distributed pseudorandom numbers.
dupwin	dupwin (libncurses)	Duplicate a window.
echo, noecho	echo, noecho	Enable/disable terminal echo.
echo_wchar, wecho_wchar	echo_wchar, wecho_wchar (libncurses)	Write a complex character and immediately refresh the window.
echochar, wechochar	echochar, wechochar (libncurses)	Echo single-byte character and rendition to a window and refresh.
ecvt, fcvt, gcvt	ecvt, fcvt, gcvt	Convert floating-point number to string.
edata	None	Last locations in program.
elf_*	None[14]	Elf object file access library.
encrypt	encrypt	Generate hashing encryption.
end, etext, edata	None	Last locations in program.
endbwent	None	Write records into new wtmps and btmps database.
enddvagent	None	Free memory and closes file.
endfsent	endfsent	Get file system descriptor file entry.
endgrent	endgrent	Get group file entry.
endhostent, endhostent_r, gethostbyaddr, gethostbyaddr_r, gethostbyname, gethostbyname_r, gethostent, gethostent_r, sethostent, sethostent_r	endhostent, gethostbyaddr, gethostbyaddr_r, gethostbyname, gethostbyname_r, gethostent, sethostent	Get, set, or end network host entry.
getnetconfig, setnetconfig, getnetconfigent, freenetconfigent, nc_perror, nc_sperror	None	Get network configuration database entry.
getmntent, getmntent_r, setmntent, addmntent, delmntent, endmntent, hasmntopt	getmntent, getmntent_r, setmntent, addmntent, endmntent, hasmntopt	Get file system descriptor file entry.
getnetent, getnetbyaddr, getnetbyname, setnetent, endnetent	getnetent, getnetbyaddr, getnetbyname, setnetent, endnetent	Get network entry.
getnetgrent, setnetgrent, endnetgrent, innetgr	getnetgrent, setnetgrent, endnetgrent, innetgr	Get network group entry.
endnetpath	None	Get etc/netconfig entry corresponding to NETPATH component.
endusershell	endusershell	Close legal user shells file.
endutent	endutent	Access utmp file entry.
endutsent	endutsent	Access/update routines for user-accounting database maintained by utmpd.
endutxent	endutxent	Access utmpx file entry.
endwin	endwin	Suspend curses session.
erand48	erand48	Generate pseudorandom numbers.
erase	erase	Clear a window.
erasechar, killchar	erasechar, killchar (libncurses)	Single-byte terminal environment query functions.
erf, erff, erfl, erfw, erfq, erfc, erfcf, erfcl, erfcw, erfcq	erf, erff, erfl, erfc, erfcf, erfcl	Error and complementary error functions.
errno	errno[15]	System error messages.
etext	None	Last locations in program.
exp, expf, expl	exp, expf, expl	Exponential functions.
exp10, exp10f, exp10l,	exp10, exp10f, exp10l	Base-10 exponential functions.
exp2, exp2f, exp2l	exp2, exp2f, exp2l	Base-2 exponential functions.
expm1, expm1f, expm11,	expm1, exp1f, expm11	Exponential minus 1 functions.
fabs, fabsf, fabsl	fabs, fabsf, fabsl	Absolute value functions.
fattach	fattach	Attach a STREAMS file descriptor to an object in the file system name space.
fclose, fflush, fclose_unlocked, fflush_unlocked	fclose, fflush	Close or flush a stream.
fcpacl	None	Copy access control list (ACL) to another file.
fcvt	fcvt	Convert floating-point number to string.
fdetach	fdetach	Detach a STREAMS-based file descriptor from a filename.
fdim, fdimf, fdiml	fdim, fdimf, fdiml	Positive difference functions.
fdopen	fdopen	Associate a stream with a file descriptor.
feclearexcept	feclearexcept	Clear floating-point exceptions.
fegetenv	fegetenv	Get floating-point environment.
fegetexceptflag	fegetexceptflag	Get floating-point exception flags.
fegetflushtozero	None	Get floating-point underflow mode.
fegetround	fegetround	Get floating-point rounding mode.
fegettrapenable	None	Get exception trap enables.
feholdexcept	feholdexcept	Save floating-point environment.
feof	feof	Stream status inquiries.
feraiseexcept	feraiseexcept	Raise floating-point exceptions.
ferror, feof, clearer, ferror_unlocked, feof_unlocked, clearerr_unlocked	ferror, feof, clearer, ferror_unlocked, feof_unlocked, clearerr_unlocked	Stream status inquiries.
fesetenv	fesetenv	Set floating-point environment.
feupdateenv	feupdateenv	Set floating-point env.
fetch	fetch[16]	Database subroutines.
fflush, fflush_unlocked	fflush, fflush_unlocked	Close or flush a stream.
ffs	ffs	Memory operations, find first bit set.
fgetc	fgetc	Get character from a stream file.
fgetpos, fsetpos	fgetpos, fsetpos	Save or restore file position indicator for a stream.
fopen64, freopen64, fseeko64, fsetpos64, statvfsdev64, ftello64, ftw64, nftw64, statvfsdev64, tmpfile64	fopen64, freopen64, fseeko64, fsetpos64, ftello64, ftw64, nftw64, tmpfile64	File system APIs to support large files.
fgetpwent	fgetpwent	Get password file entry.
fgets, fgets_unlocked	fgets, fgets_unlocked	Get a string from a stream.
fgetspent, fgetspwent, fgetspwent_r	None	Get secure password file entry. Get secure password file entry on trusted systems.
fgetwc, fgetwc_unlocked	fgetwc, fgetwc_unlocked	Get a wide character from a stream files.
fgetws	fgetws	Get a wide string from a stream.
fileno	fileno	Map stream pointer to file descriptor.
filter	filter (libncurses)	Disable the use of certain terminal capabilities.
finite	finite	Floating-point finiteness macro.
firstkey	firstkey	Database subroutines.
firstof2	None	Process 16-bit characters.
flash	flash (lincurses)	Flash the screen.
flockfile, funflockfile	flockfile, funflockfile	Explicit locking of streams within a multithread application.
floor, floorf, floorl floorw, floorq	floor, floorf, floorl	Floor functions.
flushinp		Discard input.
fma, fmaf, fmal	fma, fmaf, fmal	Floating multiply-add functions.
fmax, fmaxf, fmaxl	fmax, fmaxf, fmaxl	Maximum value functions.
fmin, fminf, fminl	fmin, fminf, fminl	Minimum value functions.
fmod, fmodf, fmodl	fmod, fmodf, fmodl	Remainder functions.
fmtmsg	fmtmsg	Displays formatted message on standard error and console.
fnmatch	fnmatch	Match filename patterns.
fopen, freopen, fdopen	fopen, freopen, fdopen	Open or reopen a stream file; convert file to stream.
fpclassify	fpclassify	Floating-point classification macro.
fprintf	fprintf	Print formatted output to a file.
fputc	fputc	Put character or word on a stream.
fputs	fputs	Put a string on a stream.
fputs_unlocked	fputs_unlocked	Put a string on a stream.
fputwc	fputwc	Put a wide character on a stream file.
fputwc_unlocked	fputwc_unlocked	Put a wide character on a stream file.
fputws fputws_unlocked	fputws fputws_unlocked	Put a wide-character string on a stream file.
fread, fwrite, fread_unlocked, fwrite_unlocked	fread, fwrite, fread_unlocked, fwrite_unlocked	Buffered binary input/output to a stream file.
free	free	Release allocated block of main memory.
freeaddrinfo	freeaddrinfo	Get hostname and address entry.
freenetconfigent	None	Get network configuration database entry.
freopen	freopen	Reopen a stream file; convert file to stream.
frexp, frexpf, frexpl	frexp, frexpf, frexpl_	Extract mantissa and exponent from floating-point number.
fscanf	fscanf	Formatted input conversion, read from stream file.
fseek, fseeko, ftell, ftello, rewind, ftell_unlocked, rewind_unlocked	fseek, fseeko, ftell, ftello, rewind	Reposition a file pointer in a stream.
fseek_unlocked	None	Reposition a file pointer in a stream.
fseeko	fseeko	Reposition a file pointer in a stream.
fsetaclentry	None	Add, modify, or delete access control list entry.
fsetpos	fsetpos	Restore file position indicator for a stream.
fstatfsdev	None	Get file system statistics.
ftell	ftell	Reposition a file pointer in a stream.
ftell_unlocked	None	Reposition a file pointer in a stream.
ftello	ftello	Reposition a file pointer in a stream.
ftok	ftok	Create interprocess communication identifier.
ftw, nftw, nftw2	ftw, nftw	Walk a file tree, executing a function.
funflockfile	funflockfile	Explicit locking of streams within a multithread application.
fwide	fwide	Set stream orientation.
fwprintf, wprintf, swprintf	fwprintf, wprintf, swprintf	Print formatted wide-character output.
fwrite, fwrite_unlocked	fwrite, fwrite_unlocked	Buffered binary input/output to a stream file.
fwscanf, wscanf, swscanf	fwscanf, wscanf, swscanf	Convert formatted wide-character input.
gai_strerror	gai_strerror	Get hostname and address entry.
gamma, gammaf, gammal	gamma, gammaf, gammal	Log gamma function.
gcvt	gcvt	Convert floating-point number to string.
get_expiration_time	None	Add a specific time interval to the current absolute system time.
get_myaddress	get_myaddress	Obsolete library routines for RPC.
get_resfield	None	Resolver routines.
get_wch, mvget_wch, mvwget_wch, wget_wch	get_wch, mvget_wch, mvwget_wch, wget_wch (libncurses)	Get a wide character from a terminal.
get_wstr	get_wstr	Get an array of wide characters and function key codes from a terminal.
getaddrinfo, getnameinfo, freeaddrinfo, gai_strerror, getipnodebyaddr, getipnodebyname	getaddrinfo, getnameinfo	Get hostname and address entry.
getbegyx, getmaxyx, getparyx	getbegyx, getmaxyx, getparyx (libncurses)	Get additional cursor and window coordinates.
getbkgd	getbkgd (libncurses)	Set or get background character and rendition using a single-byte character.
getbkgrnd	getbkgrnd (libncurses)	Set or get background character and rendition using a complex character.
getbootpent, putbootpent setbootpent, endbootpent parse_bp_htype, parse_bp_hpaddr parse_bp_iaddr	None	Get or put bootptab entry.
getbwent	getbwent	Write records into new wtmps and btmps database.
getc, getc_unlocked, getchar, getchar_unlocked, fgetc, getw, getw_unlocked	getc, getc_unlocked, getchar, getchar_unlocked, fgetc, getw, getw_unlocked	Get character or word from a stream file.
getcchar	getcchar	Get a wide-character string.
getch, wgetch, mvgetch, mvwgetch	getch, wgetch, mvgetch, mvwgetch (libncurses)	Get a single-byte character from the terminal.
getchar	getchar	Get character from a stream file.
getclock	None	Get current value of system-wide clock.
getcwd	getcwd	Get pathname of current working directory.
getdate, getdate_r	geTDate, getdate_r	Convert user format date and time.
getdiskbyname, getdiskbyname_r	None	Get disk description by its name.
geTDvagent, getdvagnam, setdvagent, enddvagent, putdvagnam, copydvagent	None	Manipulate device assignment database entry for a trusted system.
getenv	getenv	Return value for environment name.
getfsent, getfsspec, getfsfile, getfstype, setfsent, endfsent	getfsent, getfsspec, getfsfile, setfsent, endfsent	Get file system descriptor file entry.
getgrent, setgrent, endgrent, fgetgrent	getgrent, setgrent, endgrent, fgetgrent	Get group file entry.
getgrgid, getgrnam	getgrgid, getgrnam	Get group file entry.
gethostbyaddr	gethostbyaddr	Get network host entry.
gethostbyname	gethostbyname	Get network host entry.
endhostent_r, gethostbyaddr_r, gethostbyname_r, gethostent_r, sethostent_r	endhostent, gethostbyaddr, gethostbyname, gethostent, sethostent	Get, set, or end network host entry.
gethostent, gethostbyaddr, gethostbyname, sethostent, endhostent	endhostent, gethostbyaddr, gethostbyname, gethostent, sethostent	Get network host entry.
gethrtime	None	Get high-resolution time.
getipnodebyaddr	None	Get hostname and address entry.
getipnodebyname	None	Get hostname and address entry.
getlocale, getlocale_r	None	Get the locale of a program. Get the locale of a program (mt-safe).
getlogin, getlogin_r	getlogin	Get name of user logged in on this terminal.
getmaxyx	getmaxyx	Get additional cursor and window coordinates.
getmntent, setmntent, addmntent, delmntent, endmntent, hasmntopt	getmntent, setmntent, addmntent, delmntent, endmntent, hasmntopt	Get file system descriptor file entry.
getmntent_r	getmntent_r	Reentrant get file system descriptor fileentry.
getn_wstr, get_wstr, mvgetn_wstr, mvget_wstr, mvwgetn_wstr, mvwget_wstr, wgetn_wstr, wget_wstr	getn_wstr, get_wstr, mvgetn_wstr, mvget_wstr, mvwgetn_wstr, mvwget_wstr, wgetn_wstr, wget_wstr (libncurses)	Get an array of wide characters and function key codes from a terminal.
getnameinfo	getnameinfo	Get hostname and address entry.
getnetbyaddr, getnetbyname	getnetbyaddr, getnetbyname	Get network entry.
getnetbyaddr_r, getnetbyname_r	None	Reentrant get network entry.
getnetconfig, setnetconfig, endnetconfig, getnetconfigent, freenetconfigent, nc_perror, nc_sperror	None	Get network configuration database entry.
getnetent, getnetbyadd, getnetbyname, setnetent, endnetent	getnetent, getnetbyadd getnetbyname, setnetent endnetent	Get network entry.
getnetgrent, setnetgrent, endnetgrent, innetgr	getnetgrent, setnetgrent, endnetgrent, innetgr	Get network group entry.
getnetname	getnetname	Library routines for secure remote procedure calls.
getnetpath, setnetpath, endnetpath	None	Get /etc/netconfig entry corresponding to NETPATH component.
getnstr, mvgetnstr, mvwgetnstr, wgetnstr	getnstr, mvgetnstr, mvwgetnstr, wgetnstr	Get a multibyte character-length-limited string from the terminal.
getopt, optarg optind, opterr	getopt, optarg optind, opterr	Get option letter from argument vector.
getparyx	getparyx (libncurses)	Get additional cursor and window coordinates.
getpass	getpass	Read a password.
getprdfent, getprdfnam, setprdfent, endprdfent, putprdfnam	None	Manipulate system default database entry for a trusted system.
getprdfnam	None	Search for file.
getprotoent, getprotobynumber getprotobyname, setprotoent endprotoent	getprotoent, getprotobynumber getprotobyname, setprotoent endprotoent	Get, set, or end protocol entry.
getprpwaid	None	Get protected password database audit ID.
getprpwent, getprpwuid getprpwnam, getprpwaid setprpwent, endprpwent putprpwnam	None	Manipulate protected password database entry.
getprtcent, getprtcnam setprtcent, endprtcent, putprtcnam	None	Manipulate terminal control database entry for a trusted system.
getpublickey, getsecretkey publickey	None	Retrieve public or secret key.
getpw	getpw	Get name from UID.
getpwent, getpwuid getpwnam, setpwent endpwent, fgetpwent	getpwent, getpwuid getpwnam, setpwent endpwent, fgetpwent	Get password file entry.
getresuid, getresgid	getresuid, getresgid	Get real, effective, and saved user or group IDs.
getrpcent, getrpcbyname getrpcbynumber	getrpcent, getrpcbyname getrpcbynumber	Get RPC entry.
getrpcport	getrpcport	Get RPC port number.
gets, fgets fgets_unlocked	gets, fgets fgets_unlocked	Get a string from a stream.
getsecretkey	None	Retrieve public or secret key.
getservbyname	getservbyname	Get service entry.
getservbyport	getservbyport	Get service entry.
getservbyport_r, getservbyname_r	None	Reentrant get service entry.
endservent, getservbyname, getservbyport, getservent, setservent	endservent, getservbyname, getservbyport, getservent, setservent	Get, set, or end service entry.
endservent_r, getservbyname_r, getservbyport_r, getservent_r setservent_r	None	Reentrant get, set, or end service entry.
getspent, fgetspent getspnam, getspnam_r setspent, endspent	None	Get secure password file entry.
getspwaid getspwaid_r	None	Get secure password file entry on trusted systems.
getspwent, getspwuid getspwaid, getspwnam setspwent, endspwent fgetspwent, getspwent_r getspwuid_r, getspwaid_r getspwnam_r, setspwent_r endspwent_r, fgetspwent_r	None	Get secure password file entry on trusted systems.
getstr, mvgetstr mvwgetstr, wgetstr	getstr, mvgetstr mvwgetstr, wgetstr (libncurses)	Get a multibyte character string from the terminal.
getsubopt	getsubopt	Parse suboptions from a string.
gettimer	None	Get value of a per-process timer.
gettxt	None	Read text string from message file.
getusershell, setusershell, endusershell	None	Get legal user shells.
getutent, getutent_r, getutid, getutid_r, getutline, getutline_r, pututline, setutent, endutent, utmpname	getutent, getutent_r, getutid, getutid_r, getutline, getutline_r, pututline, setutent, endutent, utmpname	Access utmp file entry.
pututline_r, setutent_r, endutent_r, utmpname_r	None	Access utmp file entry (reentrant).
getutsent, getutsid, getutsline, pututsline, setutsent, endutsent	None	Access/update routines for user-accounting database maintained by utmpd.
getutxent, getutxid getutxline, pututxline setutxent, endutxent	getutxent, getutxid getutxline, pututxline setutxent, endutxent	Access utmpx file entry.
getwc, getwchar, fgetwc, fgetwc_unlocked	getwc, fgetwc, getwc_unlocked, fgetwc_unlocked	Get a wide character from a stream file.
getwd	getwd	Get pathname of current working directory.
getwin, putwin	getwin, putwin (libncurses)	Dump window to, and reload window from, a file.
getyx	getyx (libncurses)	Get cursor and window coordinates.
glob, globfree	glob, globfree (libncurses)	Filename generation function.
gmtime, gmtime_r	gmtime, gmtime_r	Convert date and time to string.
grantpt	grantpt	Grant access to the STREAMS slavepty.
gsignal	gsignal	Software signals.
gssapi, gss_accept_sec_context, gss_acquire_cred, gss_add_cred, gss_add_oid_set_member, gss_canonicalize_name gss_*	Supported through the GNU Generic Security Service Library[17]	Generic security sevice application programming interface.
halfdelay	halfdelay	Control input character delay mode.
has_colors	has_colors	Color manipulation functions.
has_ic, has_il	has_ic, has_il(libncurses)	Query functions for terminal insert and delay capability.
hasmntopt	hasmntopt	Get file system descriptor file entry.
hcreate	hcreate	Manage hash search function.
hdestroy	hdestroy	Manage hash search function.
herror	herror	Resolver routines.
hline, mvhline, mvvline, mvwhline, mvwvline, vline, whline, wvline	hline, mvhline, mvvline, mvwhline, mvwvline, vline, whline, wvline (libncurses)	Draw lines from single-byte characters and renditions.
hline_set, mvhline_set, mvvline_set, mvwhline_set, mvwvline_set, vline_set, whline_set, wvline_set	hline_set, mvhline_set, mvvline_set, mvwhline_set, mvwvline_set, vline_set, whline_set, wvline_set (libncurses)	Draw lines from complex characters and renditions.
host2netname	host2netname (rpc/auth.h)	Library routines for secure remote procedure calls.
hosts_access, hosts_ctl request_init, request_set	hosts_access, hosts_ctl request_init, request_set	Access control library.
hsearch, hcreate hdestroy	hsearch, hcreate hdestroy	Manage hash search tables.
htonl, htons	htonl, htons	Convert values from host to network byte order.
hypot, hypotf, hypotl	hypot, hypotf, hypotl	Euclidean distance (hypotenuse) functions.
iconv, iconv_open, iconv_close	iconv, iconv_open, iconv_close	Code set conversion routines.
idcok	idcok (libncurses)	Enable or disable use of hardware insert- and delete-character features.
idlok	idlok (libncurses)	Terminal output control functions.
if_freenameindex	if_freenameindex	Interface name to index mapping.
if_indextoname	if_indextoname	Interface name to index mapping.
if_nametoindex, if_indextoname if_nameindex, if_freenameindex	if_nametoindex, if_indextoname if_nameindex, if_freenameindex	Interface name to index mapping.
ilogb, ilogbf, ilogbl	ilogb, ilogbf, ilogbl	Radix-independent exponent functions.
immedok	immedok (libncurses)	Enable or disable immediate terminal refresh.
in_wch, mvin_wch, mvwin_wch, win_wch	in_wch, mvin_wch, mvwin_wch, win_wch (libncurses)	Extract a complex character and rendition from a window.
in_wchnstr, in_wchstr, mvin_wchnstr, vin_wchstr, mvwin_wchnstr, mvwin_wchstr, win_wchnstr, win_wchstr	in_wchnstr, in_wchstr, mvin_wchnstr, mvin_wchstr, mvwin_wchnstr, mvwin_wchstr, win_wchnstr, win_wchstr (libncurses)	Input an array of complex characters and renditions from a window.
inch, mvinch, mvwinch, winch	inch, mvinch, mvwinch, winch (libncurses)	Input a single-byte character and rendition from a window.
inchnstr, inchstr, mvinchnstr, mvinchstr, mvwinchnstr, mvwinchstr, winchnstr, winchstr	inchnstr, inchstr, mvinchnstr, mvinchstr, mvwinchnstr, mvwinchstr, winchnstr, winchstr (libncurses)	Input an array of single-byte characters and renditions from a window.
index	index	BSD portability string routine.
inet_addr, inet_lnaof, inet_makeaddr, inet_netof, inet_network, inet_ntoa	inet_addr, inet_lnaof, inet_makeaddr, inet_netof, inet_network, inet_ntoa	Internet address manipulation routines.
inet_pton, inet_nton, inet_ntoa_r	inet_pton	Internet address manipulation routines.
init_colors, init_pair	init_colors, init_pair (libncurses)	Color manipulation functions.
initgroups	initgroups	Initialize group access list.
initstate	initstate	Pseudorandom number functions.
innstr, instr, mvinnstr, mvinstr mvwinnstr, mvwinstr, winnstr, winstr	innstr, instr, mvinnstr, mvinstr mvwinnstr, mvwinstr, winnstr, winstr (libncurses)	Input a multibyte character string from a window.
ins_nwstr, ins_wstr, mvins_nwstr mvins_wstr, vwins_nwstr mvwins_wstr, wins_nwstr, wins_wstr	ins_nwstr, ins_wstr, mvins_nwstr mvins_wstr, mvwins_nwstr mvwins_wstr, wins_nwstr, wins_wstr (libncurses)	Insert a wide-character string into a window.
ins_wch, mvins_wch, mvwins_wch, wins_wch	ins_wch, mvins_wch, mvwins_wch, wins_wch (libncurses)	Insert a complex character and rendition into a window.
insch, mvinsch, mvwinsch, winsch	insch, mvinsch, mvwinsch, winsch (libncurses)	Insert a single-byte character and rendition into a window.
insdelln, winsdelln	insdelln, winsdelln (libncurses)	Delete or insert lines into a window.
insertln, winsertln	insertln, winsertln (libncurses)	Insert lines into a window.
insnstr, insstr, mvinsnstr, mvinsstr, mvwinsnstr, mvwinsstr, winsnstr, winsstr	insnstr, insstr, mvinsnstr, mvinsstr, mvwinsnstr, mvwinsstr, winsnstr, winsstr (libncurses)	Insert a multibyte character into a window.
insque, remque	insque, remque	Insert or remove an element in a queue.
intrflush	intrflush (libncurses)	Enable or disable flush on interrupt.
inwstr	inwstr (libncurses)	Input a string of wide characters from a window.
is_linetouched, is_wintouched, touchline, untouchwin, wtouchln	is_linetouched, is_wintouched, touchline, untouchwin, wtouchln	Window refresh control functions.
isalnum, isalpha, isascii	isalnum, isalpha, isascii	Classify characters.
isastream	isastream	Determine if file descriptor refers to STREAMS device or STREAMS-based pipe.
isatty	isatty	Find name of a terminal.
iscntrl	iscntrl	Classify characters.
isendwin	isendwin (libncurses)	Determine whether a screen has been refreshed.
isfinite, finite	isfinite, finite	Floating-point finiteness macro.
isgraph	isgraph	Classify characters.
isgreater	isgreater	Floating-point quiet comparison macro.
isgreaterequal	isgreaterequal	Floating-point quiet comparison macro.
isinf	isinf	Test for infinity.
isless	isles	Floating-point quiet comparison macro.
islessequal	islessequal	Floating-point quiet comparison macro.
islessgreater	islessgreater	Floating-point quiet comparison macro.
islower	islower	Classify characters.
isnan	isnan	Test for nan.
isnormal	isnormal	Test for normal value.
ispunct, isspace isprint, isupper isxdigit	ispunct, isspace isprint, isupper isxdigit	Classify characters.
isunordered	isunordered	Floating-point comparison macro.
iswalpha, iswupper, iswlower, iswdigit, iswxdigit, iswalnum, iswspace, iswpunct, iswprint, iswgraph, iswcntrl, iswctype	iswalpha, iswupper, iswlower, iswdigit, iswxdigit, iswalnum, iswspace, iswpunct, iswprint, iswgraph, iswcntrl, iswctype	Classify wide characters.
jrand48	jrand48	Generate pseudorandom numbers.
keyname, key_name	keyname, key_name (libncurses)	Get name of key.
keypad	keypad (libncurses)	Enable/disable abbreviation of function keys.
killchar	killchar (libncurses)	Single-byte line kill character.
killwchar	killwchar (libncurses)	Current line kill character.
l64a, l64a_r	l64a	Convert between long integer and base-64 ASCII string.
lckpwdf, ulckpwdf	lckpwdf, ulckpwdf (shadow.h)	Control access to /etc/passwd and /etc/shadow files.
lcong48	lcong48	Generate pseudorandom numbers.
ldexp, ldexpf, ldexpl ldexpw, ldexpq	ldexp, ldexpf ldexpl	Scale exponent of a floating-point number.
ldiv	ldiv	Long integer division and remainder.
leaveok	leaveok (libncurses)	Terminal output control functions.
lfind	lfind	Linear search and update.
lgamma, lgammaf, lgammal, lgamma_r, lgammaf_r, lgammal_r	lgamma, lgammaf, lgammal, lgamma_r, lgammaf_r, lgammal_r	Log gamma functions.
llrint, llrintf, llrintl	llrint, llrintf, llrintl, llrintw, llrintq	Round to nearest long long function.
llround, llroundf, llroundl	llround, llroundf, llroundl	Round to long long functions.
localeconv	localeconv	Query numeric formatting conventions of current locale.
localtime, localtime_r	localtime, localtime_r	Convert date and time to string.
log, logf, logl, logw, logq	log, logf, logl	Natural logarithm functions.
log10, log10f, log101	log10, log10f, log101	Common logarithm functions.
log2, log2f, log2l	log2, log2f, log2l	Logarithm base 2 functions.
logb, logbf, logbl	logb, logbf, logbl	Radix-independent exponent functions.
longname	longname (libncurses)	Get verbose description of current terminal.
lrand48	lrand48	Generate pseudorandom numbers.
lrint, lrintf, lrintl	lrint, lrintf, lrintl	Round to nearest long int functions.
lround, lroundf, lroundl	lround, lroundf, lroundl	Round to long int functions.
lsearch, lfind	lsearch, lfind	Linear search and update.
ltostr, ltostr_r, ultostr, ultostr_r, ltoa, ltoa_rultoa, ultoa_r	None	Convert long integers to strings.
mallinfo	mallinfo	Display memory space usage.
calloc, free, malloc, mallopt, realloc, valloc	malloc, free, realloc, calloc, mallopt, valloc	Memory allocator routines.
alloca	alloca	Memory allocator routines.
mblen	mblen	Multibyte character and string conversions.
mbrlen	mbrlen	Get number of bytes in a character.
mbrtowc	mbrtowc	Convert a character to a wide-character code.
mbsinit	mbsinit	Determine conversion object status.
mbsrtowcs	mbsrtowcs	Convert a string to a wide-character string.
memalign	memalign	Allocate aligned memory.
memccpy, memchr, memcmp, memcpy, memset, bcopy, bcmp, bzero	memccpy, memchr, memcmp, memcpy, memset, bcopy, bcmp, bzero	Memory operations.
meta	meta (libncurses)	Enable/disable meta-keys.
mkdirp, rmdirp	None (see mkdir)	Create, remove directories in a path.
mkfifo	mkfifo	Make a FIFO special file.
mktemp	mktemp	Make a unique filename.
mktime	mktime	Create calendar time value.
mktimer	None	Allocate a per-process timer.
modf, modff, modfl	modf, modff, modfl	Decompose floating-point number.
monitor	None	Prepare execution profile.
mount	mount	Keep track of remotely mounted file systems.
move, wmove	move, wmove	Window cursor location functions.
mrand48	mrand48	Generate pseudorandom numbers.
mblen, mbtowc, mbstowcs, wctomb, wcstombs	mblen, mbtowc, mbstowcs, wctomb, wcstombs	Multibyte character and string conversions.
mvaddchnstr, mvwaddchnstr, waddchnstr	mvaddchnstr, mvwaddchnstr, waddchnstr (libncurses)	Add length-limited string of single-byte characters and renditions to a window.
mvaddchstr, mvwaddchstr, waddchstr	mvaddchstr, mvwaddchstr, waddchstr (libncurses)	Add string of single-byte characters and renditions to a window.
mvprintw, mvwprintw, printw, wprintw	mvprintw, mvwprintw, printw, wprintw (libncurses)	Print formatted output in window.
mvscanw, mvwscanw, scanw, wscanw	mvscanw, mvwscanw, scanw, wscanw (libncurses)	Convert formatted input from a window.
mvwin	mvwin (libncurses)	Move window.
nan, nanf, nanl	nan, nanf, nanl	String-to-nan conversion functions.
napms	napms (libncurses)	Suspend the calling process (low-level curses routine)
dbm_open, dbm_close, dbm_fetch, dbm_store, dbm_delete, dbm_firstkey, dbm_nextkey, dbm_error, dbm_clearerr	dbm_open, dbm_close, dbm_fetch, dbm_store, dbm_delete, dbm_firstkey, dbm_nextkey, dbm_error[18]	Database subroutines.
net_aton, net_ntoa	None	Network station address string conversion routines.
neTDir_getbyname, netdir_getbyaddr, netdir_free, netdir_options, taddr2uaddr, uaddr2taddr, netdir_perror, netdir_sperror	None	Generic transport name-to-address translation.
newpad, pnoutrefresh, prefresh	newpad, pnoutrefresh, prefresh (libncurses)	Pad management functions.
newwin, subwin newwin,	subwin (libncurses)	Window creation functions.
nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl	nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl	Next representable floating-point values.
nis_error, nis_sperrno, nis_perror, nis_lerror, nis_sperror, nis_sperror_r	nis_error nis_sperrno, nis_perror, nis_lerror, nis_sperror, nis_sperror_r	Display NIS+ error messages.
nis_groups, nis_ismember, nis_addmember, nis_removemember, nis_creategroup nis_destroygroup, nis_verifygroup, nis_print_group_entry, nis_map_group, _nis_map_group	nis_groups, nis_ismember, nis_addmember, nis_removemember, nis_creategroup nis_destroygroup, nis_verifygroup, nis_print_group_entry	NIS+ group manipulation functions.
nis_lookup, nis_add, nis_remove nis_modify, nis_freeresult	nis_lookup, nis_add, nis_remove nis_modify, nis_freeresult	NIS+ namespace functions.
nis_objects	nis_objects	NIS+ object formats.
nis_ping, nis_checkpoint	nis_ping, nis_checkpoint	NIS+ log administration functions.
nis_mkdir, nis_rmdir, nis_servstate nis_stats, nis_getservlist nis_freeservlist, nis_freetags	nis_mkdir, nis_rmdir, nis_servstate nis_stats, nis_getservlist nis_freeservlist, nis_freetags	NIS+ miscellaneous functions.
nis_leaf_of, nis_name_of nis_domain_of, nis_getnames nis_freenames, nis_dir_cmp nis_clone_object, nis_destroy_object nis_print_object	nis_leaf_of, nis_name_of nis_domain_of, nis_getnames nis_freenames, nis_dir_cmp nis_clone_object, nis_destroy_object nis_print_object	NIS+ subroutines.
nis_list, nis_add_entry nis_remove_entry, nis_modify_entry nis_first_entry, nis_next_entry	nis_list, nis_add_entry nis_remove_entry, nis_modify_entry nis_first_entry, nis_next_entry	NIS+ table functions file.
nl, nonl	nl, nonl (libncurses)	Enable/disable newline translation.
nl_langinfo	nl_langinfo	NLS information about native languages.
nlist	None[19]	Get entries from name list.
noqiflush, qiflush	noqiflush, qiflush (libncurses)	Enable/disable queue flushing.
notimeout, timeout, wtimeout	notimeout, timeout, wtimeout	Control blocking on input.
nrand48	nrand48	Generate pseudorandom numbers.
ntohl, ntohs	ntohl, ntohs	Convert values from network to host byte order.
opendir	opendir	Directory operations.
openlog	openlog	Control system log.
optarg, opterr, optind	optarg, opterr, optind	Get option letter from argument vector.
overlay, overwrite	overlay, overwrite	Copy overlapped windows.
pam, pam_acct_mgmt, pam_authenticate, pam_chauthtok, pam_close_session, pam_get_user, pam_open_session, pam_close_session, pam_set_data, pam_get_data, pam_set_item, pam_get_item, pam_setcred, pam_sm, pam_sm_acct_mgmt, pam_sm_authenticate, pam_start, pam_end, pam_strerror	pam (libpam) pam_authenticate, pam_chauthtok, pam_console, pam_console_apply, pam_end, pam_fail_delay, pam_get_item, pam_krb5, pam_krb5, pam_localuser, pam_open/close_session, pam_passwdqc, pam_postgresok, pam_rps, pam_selinux, pam_selinux_check, pam_set_item, pam_setcred, pam_stack, pam_start, pam_strerror, pam_succeed_if, pam_timestamp, pam_timestamp_check, pam_xauth	Pluggable authentication module.
pathfind	None	Search for named file in named directories.
pechochar, pecho_wchar	pechochar, pecho_wchar	Write a character rendition and immediately refresh the pad.
perror, errno, sys_errlist, sys_nerr	perror, errno	System error messages.
pfmt, vpfmt	None	Display message in standard format.
popen, pclose	popen, pclose	Initiate pipe I/O to/from a process.
pow, powf, powl	pow, powf, powl	Power functions.
prcmd	None	Return streams to parallel remote commands.
printf, fprintf, sprintf, snprintf,	printf, fprintf, sprintf, snprintf	Print formatted output.
pthread routines (see 6.10 in Chapter 6, "Porting HP-UX Applications")	Native POSIX Threads Library	POSIX Threads implementation.
ptsname, ptsname_r	ptsname	Get the name of a slave pty.
publickey	None	Retrieve public or secret key.
putc, fputc, putchar, putw, putc_unlocked, putchar_unlocked, putw_unlocked	putc, fputc, putchar, putw, putc_unlocked, putchar_unlocked	Put character or word on a stream.
putenv	putenv	Change or add value to environment.
putp, tputs	putp, tputs	Output commands to the terminal.
putpwent	putpwent	Write password file entry.
puts, fputs, puts_unlocked fputs_unlocked	puts, fputs, puts_unlocked fputs_unlocked	Put a string on a stream.
putspent	putspent (shadow.h)	Write shadow password file entry.
putwc, putwchar, fputwc putwc_unlocked, putwchar_unlocked_fputwc_unlocked	putwc, putwchar, fputwc putwc_unlocked, putwchar_unlocked fputwc_unlocked	Put a wide character on a stream file.
qsort	qsort	Quicker sort.
rand, srand	rand, srand	Simple random-number generator.
random, srandom initstate, setstate	random, srandom initstate, setstate	Generate a pseudorandom number.
rcmd, rcmd_af, rresvport rresvport_af, ruserok	rcmd, rresvport, ruserok	Return a stream to a remote command.
re_comp, re_exec	re_comp, re_exec	Compile and execute regular expressions.
realloc	realloc	Change size of allocated memory block.
realpath	realpath	Resolve pathname.
redrawwin, wredrawln	redrawwin, wredrawln	Line update status functions.
regcmp, regex	None	Compile and execute regular expression.
regcomp, regerror, regexec, regfree	regcomp, regerror, regexec, regfree	Regular expression matching routines.
reltimer	None	Relatively arm a per-process timer.
remainder, remainderf, remainderl	remainder, remainderf, remainderl	Remainder functions.
remove	remove	Remove an element in a queue.
remquo, remquof, remquol	remquo, remquof, remquol	Remainder functions with quotient.
res_init, res_mkquery res_query, res_search res_send	res_init, res_mkquery res_query, res_search res_send	Resolver routines.
resetty, savetty	resetty, savetty	Save/restore terminal mode.
dn_comp, dn_expand get_resfield, herror, set_resfield	dn_comp, dn_expand, herror	Resolver routines.
rexec	rexec (netdb.h)	Return stream to a remote command.
rint rintf rintl, rintw rintq, nearbyint nearbyintf, nearbyintl nearbyintw, nearbyintq	rint, rintf, rintl nearbyint, nearbyintf, nearbyintl	Round to nearest int functions.
ripoffline	rippoffline (libncurses)	Reserve a dedicated line for a purpose.
rmdirp	None	Remove directories in a path.
rmtimer	None	Free a per-process timer.
rnusers, rusers	None	Return information about users on remote machines.
round, roundf, roundl	round, roundf, roundl	Round to nearest integer, away from 0.
rpc_clnt: auth_destroy, authnone_create, authsys_create, authsys_create_ default	auth_destroy, authnone_create autunix_create, authunix_create_ default	Library routines for client-side remote procedure call authentication.
rpc_services: clnt_call, clnt_freeres clnt_geterr, clnt_perrno clnt_perror, clnt_sperrno clnt_sperror, rpc_broadcast rpc_broadcast_exp, rpc_call	callrpc, clnt_broadcast clnt_call, clnt_destroy, clnt_freeres, clnt_perrno, clnt_spcreeateerror, clnt_sperror	Library routines for client-side calls, RPC.
rpc_services: clnt_control, clnt_create clnt_create_vers, clnt_destroy clnt_dg_create, clnt_pcreateerror clnt_raw_create, clnt_spcreateerror clnt_tli_create, clnt_tp_create clnt_vc_create, rpc_createerr	clnt_control, clnt_create, clnt_destroy, clntraw_create, clnttcp_create, clntudp_create, clntudp_bufcreate	Library routines for dealing with client handles.
rpc_services: svc_dg_enablecache, svc_done, svc_exit, svc_fdset svc_freeargs, svc_getargs svc_getreq_common, svc_getreq_poll svc_getreqset, svc_getrpccaller svc_pollset, svc_run svc_sendreply	svc_getargs, svc_getcaller svc_getreqset, svc_getreq svc_register, svc_sendreply	Library routines for RPC servers.
rpc_svc_create: svc_control, svc_create svc_destroy, svc_dg_create svc_fd_create, svc_raw_create svc_tli_create, svc_tp_create svc_vc_create	svc_destroy, svc_freeargs svc_fd_create, svcraw_create, svctcp_create, svc_udpcreate, svcudp_bufcreate	Library routines for the creation of server handles, RPC.
rpc_svc_err: svcerr_auth, svcerr_decode svcerr_noproc, svcerr_noprog svcerr_progvers, svcerr_systemerr svcerr_weakauth	svcerr_auth, svcerr_decode svcerr_noproc, svcerr_noprog svcerr_progvers, svcerr_systemerr svcerr_weakauth	Library routines for server-side remote procedure call errors.
rpc_svc_reg: svc_reg, svc_unreg svc_auth_reg, xprt_register xprt_unregister	svc_register, svc_unregister	Library routines for registering servers, RPC.
rpc_xdr: xdr_accepted_reply, xdr_authsys_parms xdr_callhdr, xdr_callmsg xdr_opaque_auth, xdr_rejected_reply, xdr_replymsg	xdr_accepted_reply, xdr_authunix_parms xdr_callhdr, xdr_callmsg xdr_rejected_reply xdr_replymsg	XDR library routines for remote procedure calls.
rpcb_getmaps, rpcb_getaddr, rpcb_gettime, rpcb_rmtcall, rpcb_set, rpcb_unset	pmap_set, pmap_unset, pmap_rmtcall, pmap_getport, pmap_getports	Library routines for RPC bind service.
rsqrt, rsqrtf, rsqrtl	None	Reciprocal square root functions.
rstat, havedisk	None	Get performance data from remote kernel.
ruserok	ruserok	Return a stream to a remote command.
rwall		Write to specified remote machines.
scalb, scalbf, scalbl	scalb, scalbf, scalbl	Scale exponent of a radix-independent floating-point number.
scalbln, scalblnf, scalblnl	scalbln, scalblnf, scalblnl	Scale exponent of a radix-independent floating-point number.
scalbn, scalbnf, scalbnl	scalbn, scalbnf, scalbnl	Scale exponent of a radix-independent floating-point number.
scandir, alphasort	scandir, alphasort	Scan a directory.
scanf, fscanf, sscanf	scanf, fscanf, sscanf	Formatted input conversion, read from stream file.
scr_dump, scr_init, scr_restore, scr_set	scr_dump, scr_init, scr_restore, scr_set	Screen file input/output functions.
scrl, wscrl	None	Enhanced scroll curses window functions.
scroll	scroll	Scroll a curses window.
scrollok	scrollok	Terminal output control functions.
secdef	None	Security defaults configuration file routines.
secure_rpc authdes_getucred, authdes_seccreate, getnetname, host2netname, key_decryptsession, key_encryptsession key_gendes, key_setsecret, key_secretkey_is_set, netname2host, netname2user, user2netname	secure_rpc authdes_getucred, getnetname, host2netname, key_decryptsession, key_encryptsession, key_gendes, key_setsecret, key_secretkey_is_set, netname2host, netname2user, user2netname	Library routines for secure remote procedure calls.
set_term	set_term (libncurses)	Switch between screens.
setaclentry, fsetaclentry		Add, modify, or delete access control list entry.
setbuf, setvbuf, setvbuf_unlocked	setbuf, setvbuf	Assign buffering to a stream file.
setbwent	None	Write records into new wtmps and btmps database.
setcat	None	Set the default message catalog.
setcchar	setcchar	Set cchar_t from a wide character and rendition.
setclock	None	Set value of system-wide clock.
setkey, setkey_r	None	Generate hashing encryption.
setlabel	None	Define label for formatting routines.
setlocale_r, getlocale, getlocale_r	setlocale	Set and get the locale of a program.
shl_load, shl_definesym, shl_findsym, shl_get, shl_get_r, shl_gethandle, shl_gethandle_r, shl_getsymbols, shl_unload, dld_getenv	dladdr, dlclose, dlerror, dlopen, dlsym, dlvsym	Explicit load of shared libraries.
signbit	signbit	Floating-point sign determination.
sigpause	sigpause	Atomically release blocked signals and wait for interrupt.
sigset, sighold, sigrelse, sigignore, sigpause	sigset, sighold, sigrelse, sigignore, sigpause	Signal management.
sigemptyset, sigfillset, sigaddset, sigdelset, sigismember	sigemptyset, sigfillset, sigaddset, sigdelset, sigismember	POSIX signal set operations.
sin, sinf, sinl, sinw, sinq	sin, sinf, sinl	Sine functions.
sincos, sincosf, sincosl, sincosw, sincosq	sincos, sincosf, sincosl	Calculate sin and cos simultaneously.
sind, sindf	None	Sine functions of degree argument.
sinh, sinhf, sinhl	sinh, sinhf, sinhl	Hyperbolic sine functions.
sleep	sleep	Suspend execution for interval.
slk_attroff, slk_attr_off, slk_attron, slk_attr_on, slk_attrset, slk_attr_set, slk_clear, slk_color, slk_init, slk_label, slk_noutrefresh, slk_refresh, slk_restore, slk_set, slk_touch, slk_wset	slk_attroff, slk_attr_off, slk_attron, slk_attr_on, slk_attrset, slk_attr_set, slk_clear, slk_color, slk_init, slk_label, slk_noutrefresh, slk_refresh, slk_restore, slk_set, slk_touch,	Soft label routines.
SLPOpen, SLPClose, SLPReg, SLPDereg, SLPDelAttrs, SLPFindSrvs, SLPFindSrvTypes, SLPFindAttrs, SLPParseSrvURL, SLPEscape, SLPUnescape, SLPFree, SLPGetRefreshInterval, SLPFindScopes, SLPGetProperty, SLPSetProperty	None (refer to OpenSLP[20])	SLP (Service Location Protocol) library routines.
spray	None	Scatter data for network checking.
sqrt, sqrtf, sqrtl	sqrt, sqrtf, sqrtl	Square root functions.
ssignal, gsignal	ssignal, gsignal	Software signals facility.
standend, standout, wstandend, wstandout	standend, standout, wstandend, wstandout (libncurses)	Set and clear window attributes.
statfsdev, fstatfsdev	None	Get file system statistics.
statvfsdev, fstatvfsdev	None	Get file system statistics.
stdio	stdio	Standard buffered input/output stream file package.
stdscr	stdscr	Default window.
strerror	strerror	System error messages.
strfmon	strfmon	Convert monetary value to string.
strftime	strftime	Convert date and time to string.
string, strlen	string, strlen	Character string operations.
strord	None	Convert string data order.
strptime	strptime	Date and time conversion.
strtoacl, strtoaclpatt	strtoacl, strtoaclpatt	Convert string to access control list (ACL) structure.
strtod, strtof, strtold_	strtod, strtof, strtold_	Convert string to floating-point number.
strtof	strtof	Convert string to floating-point number (float).
strtoimax, strtoumax	strtoimax, strtoumax	Convert string to integer.
strtol, strtoul, atoll, atoi, strtoll, strtoull	strtol, strtoul, atoll, atoi, strtoll, strtoull	Convert string to integer.
subpad	subpad (libncurses)	Enhanced pad management function.
swab	swab	Swap bytes.
syncok, wcursyncup wsyncdown, wsyncup	syncok, wcursyncup, wsyncdown, wsyncup (libncurses)	Synchronize a window with its parents or children.
syslog, openlog, closelog, setlogmask	syslog, openlog, closelog, setlogmask	Control system log.
system	system	Issue a shell command.
t_accept, t_alloc, t_bind, t_close, t_connect, t_error, t_free, t_getinfo, t_getprotaddr, t_getstate, t_listen, t_look, t_open, t_optmgmt, t_rcv, t_rcvconnect, t_rcvdis, t_rcvrel, t_rcvudata, t_rcvuderr, t_snd, t_snddis, t_sndrel, t_sndudata, t_strerror, t_sync, t_unbind	None	X/open tli-xti.
taddr2uaddr	None	Generic transport name-to-address translation.
tan, tanf	tan, tanf, tanl	Tangent functions.
tand, tandf	None	Tangent functions of a degree argument.
tcgetattr, tcsetattr	tcgetattr, tcsetattr	Control tty device.
tcsendbreak, tcdrain, tcflush, tcflow	tcsendbreak, tcdrain, tcflush, tcflow	Tty line control functions.
tcgetpgrp	tcgetpgrp	Get foreground process group ID.
tcgetsid	tcgetsid	Get terminal session ID.
termattrs, term_attrs	termattrs, term_attrs (libncurses)	Get supported terminal video attributes.
tgetent, tgetflag, tgetnum, tgetstr, tgoto, tputs	tgetent, tgetflag, tgetnum, tgetstr, tgoto, tputs (libncurses)	Emulate /usr/share/lib/termcap access routines.
termname	termname (libncurses)	Get terminal name.
tgamma, tgammaf, tgammal	tgamma, tgammaf, tgammal	True gamma functions.
tigetflag, tigetnum, tigetstr, tparm	tigetflag, tigetnum, tigetstr, tparm[21]	Retrieve capabilities from the terminfo database.
timezone	timezone	Convert date and time to string.
tmpnam	tmpnam, tmpnam_r	Create a name for a temporary file.
toupper	toupper	Translate characters to uppercase, lowercase, or 7-bit ASCII.
towlower	towlower	Translate wide characters.
towupper	towupper	Translate wide characters.
trunc, truncf, truncl	TRunc, truncf, truncl	Truncation functions.
tsearch, tfind, tdelete, twalk	tsearch, tfind, tdelete, twalk	Manage binary search trees.
ttyname, isatty	ttyname, isatty	Find name of a terminal.
ttyslot	None	Find the slot in the utmpx file of the current user.
typeahead	None	Control checking for typeahead.
tzname, tzset	tzname, tzset	Convert date and time to string.
unctrl	unctrl	Generate printable representation of a character.
ungetc, ungetc_unlocked	ungetc	Push character back into input stream.
ungetch, unget_wch	None	Push a character onto the input queue.
ungetwc, ungetwc_unlocked	ungetwc	Push a wide character back into an input stream.
unlockpt	None	Unlock a STREAMS pty master and slave pair.
untouchwin	untouchwin (libncurses)	Window refresh control functions.
updatebwdb	None	Write records into new wtmps and btmps database.
use_env	None	Specify source of screen size information.
valloc	valloc	Allocate space on boundary aligned to sysconf value.
vfprintf	vfprintf	Print formatted output of a varargs argument list.
vfscanf	vfscanf	Formatted input conversion to a varargs argument.
vfwprintf	vfwprintf	Print formatted output to a file.
vidattr	vidattr (libncurses)	Output attributes to the terminal.
vsprintf, vsnprintf	vsprintf, vsnprintf	Print formatted output of a varargs argument list.
vscanf, vfscanf, vsscanf	vscanf, vfscanf, vsscanf	Formatted input conversion to a varargs argument.
vwprintf, vfwprintf, vswprintf	vwprintf, vfwprintf, vswprintf	Print formatted output.
vwprintw	vwprintw (libncurses)	Print formatted output in a window.
vwscanw	vwscanw (libncurses)	Convert formatted input from a window.
wborder	wborder (libncurses)	Draw borders from single-byte characters and renditions.
wcrtomb	wcrtomb	Convert wide-character code to a character.
wcsftime	wcsftime	Convert date and time to wide-character string.
wctob	wctob	Convert between single-byte and wide-character.
wcsrtombs	wcsrtombs	Convert a wide-character string to a string.
wcstod	wcstod	Convert wide-character string to double-precision number.
wcstoimax, wcstoumax	wcstoimax, wcstoumax	Convert wide-character string to long integer.
wcstol, wcstoll, wcstoul, wcstoull	wcstol, wcstoll, wcstoul, wcstoull	Convert wide-character string to integer.
wcscat, wcsncat, wcscmp, wcsncmp, wcscpy, wcsncpy, wcslen, wcschr, wcsrchr, wcsstr, wcspbrk, wcsspn, wcscspn, wcstok, wcstok_r, nl_wcscmp, nl_wcsncmp	wcscat, wcsncat, wcscmp, wcsncmp, wcscpy, wcsncpy, wcslen, wcschr, wcsrchr, wcsstr, wcspbrk, wcsspn, wcscspn, wcstok	Wide-character string operations.
iswalpha, iswupper, iswlower, iswdigit, iswxdigit, iswalnum, iswspace, iswpunct, iswprint, iswgraph, iswcntrl, iswctype	iswalpha, iswupper, iswlower, iswdigit, iswxdigit, iswalnum, iswspace, iswpunct, iswprint, iswgraph, iswcntrl, iswctype	Classify wide-character functions.
wmemchr, wmemcmp, wmemcpy, wmemmove, wmemset	wmemchr, wmemcmp, wmemcpy, wmemmove, wmemset	Memory operations based on wide character.
wordexp, wordfree	wordexp, wordfree	Perform word expansions.
wunctrl	wunctrl	Generate printable representation of a wide character.
xdr_control, xdr_getpos, xdr_inline, xdrrec_endofrecord, xdrrec_eof, xdrrec_readbytes, xdrrec_skiprecord, xdr_setpos, xdr_sizeof	xdr_getpos, xdr_setpos, xdr_inline, xdrrec_endofrecord, xdrrec_skiprecord, xdrrec_eof	Library routines for external data representation.
xdr_array, xdr_bytes, xdr_opaque, xdr_pointer, xdr_reference, xdr_string, xdr_string, xdr_vector, xdr_wrapstring	xdr_array, xdr_bytes, xdr_opaque, xdr_pointer, xdr_reference, xdr_string, xdr_string, xdr_vector, xdr_wrapstring	Library routines for external data representation.
xdr_destroy, xdrmem_create, xdrrec_create, xdrstdio_create	xdr_destroy, xdrmem_create, xdrrec_create, xdrstdio_create	Library routines for external data representation stream creation.
xdr_bool, xdr_char, xdr_double, xdr_enum, xdr_float, xdr_free, xdr_hyper, xdr_int, xdr_long, xdr_longlong_t, xdr_quadruple, xdr_short, xdr_u_char, xdr_u_hyper, xdr_u_int, xdr_u_long, xdr_u_longlong_t, xdr_u_short, xdr_void	xdr_bool, xdr_char, xdr_double, xdr_enum, xdr_float, xdr_free, xdr_int, xdr_long, xdr_u_int, xdr_u_long, xdr_u_char, xdr_short, xdr_u_short, xdr_void	Library routines for external data representation.
y0, y0f, y1, y1f, yn, ynf	y0, y0f, y1, y1f, yn, ynf	Bessel functions of the second kind.
yp_all, yp_bind, yp_first, yp_get_default_domain, yp_master, yp_match, yp_next, yp_order, yp_unbind, yperr_string, ypprot_err	yp_all, yp_bind, yp_first, yp_get_default_domain, yp_master, yp_match, yp_next, yp_order, yp_unbind, yperr_string, ypprot_err[22]	Network Information Service client interface.
yppasswd	yppasswd[23]	Update user password in Network Information Service (NIS).
ypupdate	ypupdate[24]	Changes NIS information.

^[13] Closet equivalent on Linux is crypt

^[14] See readelf or objdump utilities.

^[15] Declared as a volatile int in glibc.

^[16] See rpm/db.h.

^[17] See http://josefsson.org/gss/manual/.

^[18] ndbm.h

^[19] Look at lsof source code for nlist_private example.

^[20] www.openslp.org/

^[21] Supported through libncurses library.

^[22] Undocumented Linux calls. See /usr/include/rpcsvc/ypclnt.h.

^[23] Undocumented Linux call. See /usr/include/rpcsvc/yppasswd.h.

^[24] Undocumented Linux call. See /usr/include/rcpsvc/ypupd.h.