Table B-2 lists functions available on OpenVMS VAX and OpenVMS Alpha Version 6.2 and higher.

Table B-2 Functions Added in OpenVMS Version 6.2

catclose	catgets	catopen	fgetwc
fgetws	fputwc	fputws	getopt
getwc	getwchar	iconv	iconv_close
iconv_open	iswalnum	iswalpha	iswcntrl
iswctype	iswdigit	iswgraph	iswlower
iswprint	iswpunct	iswspace	iswupper
iswxdigit	nl_langinfo	putwc	putwchar
strnlen	strptime	towlower	towupper
ungetwc	wcscat	wcschr	wcscmp
wcscoll	wcscpy	wcscspn	wcsftime
wcslen	wcsncat	wcsncmp	wcsncpy
wcspbrk	wcsrchr	wcsspn	wcstol
wcstoul	wcswcs	wcswidth	wcsxfrm
wcstod	wctype	wcwidth	wcstok

B.3 Functions Available on OpenVMS Version 7.0 and Higher

Table B-3 lists functions available on OpenVMS VAX and OpenVMS Alpha Version 7.0 and higher.

Table B-3 Functions Added in OpenVMS Version 7.0

basename	bcmp	bcopy	btowc
bzero	closedir	confstr	dirname
drand48	erand48	ffs	fpathconf
ftruncate	ftw	fwide	fwprintf
fwscanf	getclock	getdtablesize	getitimer
getlogin	getpagesize	getpwnam	getpwuid
gettimeofday	index	initstate	jrand48
lcong48	lrand48	mbrlen	mbrtowc
mbsinit	mbsrtowcs	memccpy	mkstemp
mmap	mprotect	mrand48	msync
munmap	nrand48	opendir	pathconf
pclose	popen	putenv	random
readdir	rewinddir	rindex	rmdir
seed48	seekdir	setenv	setitimer
setstate	sigaction	sigaddset	sigdelset
sigemptyset	sigfillset	sigismember	siglongjmp
sigpending	sigprocmask	sigsetjmp	sigsuspend
srand48	srandom	strcasecmp	strdup
strfmon	strncasecmp	strsep	swab
swprintf	swscanf	sysconf	telldir
tempnam	towctrans	truncate	tzset
ualarm	uname	unlink	unsetenv
usleep	vfwprintf	vswprintf	vwprintf
wait3	wait4	waitpid	wcrtomb
wcsrtombs	wcsstr	wctob	wctrans
wmemchr	wmemcmp	wmemcpy	wmemmove
wmemset	wprintf	wscanf

B.4 Functions Available on OpenVMS Alpha Version 7.0 and Higher

Table B-4 Functions Added in OpenVMS Alpha Version 7.0

_basename32	_basename64	_bsearch32	_bsearch64
_calloc32	_calloc64	_catgets32	_catgets64
_ctermid32	_ctermid64	_cuserid32	_cuserid64
_dirname32	_dirname64	_fgetname32	_fgetname64
_fgets32	_fgets64	_fgetws32	_fgetws64
_gcvt32	_gcvt64	_getcwd32	_getcwd64
_getname32	_getname64	_gets32	_gets64
_index32	_index64	_longname32	_longname64
_malloc32	_malloc64	_mbsrtowcs32	_mbsrtowcs64
_memccpy32	_memccpy64	_memchr32	_memchr64
_memcpy32	_memcpy64	_memmove32	_memmove64
_memset32	_memset64	_mktemp32	_mktemp64
_mmap32	_mmap64	_qsort32	_qsort64
_realloc32	_realloc64	_rindex32	_rindex64
_strcat32	_strcat64	_strchr32	_strchr64
_strcpy32	_strcpy64	_strdup32	_strdup64
_strncat32	_strncat64	_strncpy32	_strncpy64
_strpbrk32	_strpbrk64	_strptime32	_strptime64
_strrchr32	_strrchr64	_strsep32	_strsep64
_strstr32	_strstr64	_strtod32	_strtod64
_strtok32	_strtok64	_strtol32	_strtol64
_strtoll32	_strtoll64	_strtoq32	_strtoq64
_strtoul32	_strtoul64	_strtoull32	_strtoull64
_strtouq32	_strtouq64	_tmpnam32	_tmpnam64
_wcscat32	_wcscat64	_wcschr32	_wcschr64
_wcscpy32	_wcscpy64	_wcsncat32	_wcsncat64
_wcsncpy32	_wcsncpy64	_wcspbrk32	_wcspbrk64
_wcsrchr32	_wcsrchr64	_wcsrtombs32	_wcsrtombs64
_wcsstr32	_wcsstr64	_wcstok32	_wcstok64
_wcstol32	_wcstol64	_wcstoul32	_wcstoul64
_wcswcs32	_wcswcs64	_wmemchr32	_wmemchr64
_wmemcpy32	_wmemcpy64	_wmemmove32	_wmemmove64
_wmemset32	_wmemset64

B.5 Functions Available on OpenVMS Version 7.2 and Higher

Table B-5 Functions Added in OpenVMS Version 7.2

asctime_r	ctime_r	decc$set_child_standard_streams	decc$write_eof_to_mbx
decc$validate_wchar	dlclose	dlerror	dlopen
dlsym	fcntl	gmtime_r	localtime_r

B.6 Functions Available on OpenVMS Version 7.3 and Higher

Table B-6 lists functions available on OpenVMS VAX and OpenVMS Alpha Version 7.3 and higher.

Table B-6 Functions Added in OpenVMS Version 7.3

fchown
link
utime
utimes
writev

B.7 Functions Available on OpenVMS Version 7.3-1 and Higher

Table B-7 lists functions available on OpenVMS Alpha Version 7.3-1 and higher.

Table B-7 Functions Added in OpenVMS Version 7.3-1

access	fseeko
chmod	ftello
chown	ftw
fstat	readdir_r
	stat
vfscanf	vfwscanf
vscanf	vwscanf
vsscanf	vswscanf
decc$feature_get_index
decc$feature_get_name
decc$feature_get_value
decc$feature_set_value

The various standards dictate which header file must define each of the standard functions. This is the included header file documented with each function prototype in the Reference Section of this manual.

However, many of the functions defined by the standards already existed on several operating systems and were defined in different header files. This is especially true on OpenVMS systems with the header files <processes.h> , <unixio.h> , and <unixlib.h> .

So, to provide upward compatibility for these functions, their prototypes are duplicated in both the expected header file as well as the header file defined by the standards.

Table C-1 lists these functions.

Table C-1 Duplicated Prototypes

Function	Duplicated in	Standard says
access	<unixio.h>	<unistd.h>
alarm	<signal.h>	<unistd.h>
bcmp	<string.h>	<strings.h>
bcopy	<string.h>	<strings.h>
bzero	<string.h>	<strings.h>
chdir	<unixio.h>	<unistd.h>
chmod	<unixio.h>	<stat.h>
chown	<unixio.h>	<unistd.h>
close	<unixio.h>	<unistd.h>
creat	<unixio.h>	<fcntl.h>
ctermid	<stdio.h>	<unistd.h>
cuserid	<stdio.h>	<unistd.h>
dirname	<string.h>	<libgen.h>
dup	<unixio.h>	<unistd.h>
dup2	<unixio.h>	<unistd.h>
ecvt	<unixlib.h>	<stdlib.h>
execl	<processes.h>	<unistd.h>
execle	<processes.h>	<unistd.h>
execlp	<processes.h>	<unistd.h>
execv	<processes.h>	<unistd.h>
execve	<processes.h>	<unistd.h>
execvp	<processes.h>	<unistd.h>
_exit	<stdlib.h>	<unistd.h>
fcvt	<unixlib.h>	<stdlib.h>
ffs	<string.h>	<strings.h>
fsync	<stdio.h>	<unistd.h>
ftime	<time.h>	<timeb.h>
gcvt	<unixlib.h>	<stdlib.h>
getcwd	<unixlib.h>	<unistd.h>
getegid	<unixlib.h>	<unistd.h>
getenv	<unixlib.h>	<stdlib.h>
geteuid	<unixlib.h>	<unistd.h>
getgid	<unixlib.h>	<unistd.h>
getopt	<stdio.h>	<unistd.h>
getpid	<unixlib.h>	<unistd.h>
getppid	<unixlib.h>	<unistd.h>
getuid	<unixlib.h>	<unistd.h>
index	<string.h>	<strings.h>
isatty	<unixio.h>	<unistd.h>
lseek	<unixio.h>	<unistd.h>
mkdir	<unixlib.h>	<stat.h>
mktemp	<unixio.h>	<stdlib.h>
nice	<stdlib.h>	<unistd.h>
open	<unixio.h>	<fcntl.h>
pause	<signal.h>	<unistd.h>
pipe	<processes.h>	<unistd.h>
read	<unixio.h>	<unistd.h>
rindex	<string.h>	<strings.h>
sbrk	<stdlib.h>	<unistd.h>
setgid	<unixlib.h>	<unistd.h>
setuid	<unixlib.h>	<unistd.h>
sleep	<signal.h>	<unistd.h>
strcasecmp	<string.h>	<strings.h>
strncasecmp	<string.h>	<strings.h>
system	<processes.h>	<stdlib.h>
times	<time.h>	<times.h>
umask	<stdlib.h>	<stat.h>
vfork	<processes.h>	<unistd.h>
wait	<processes.h>	<wait.h>
write	<unixio.h>	<unistd.h>