<wchar.h>

The <wchar.h> header file contains declarations and definitions that are related to the manipulation of wide character strings. Any functions which deal with files are accessible if SYSIFCOPT(*IFSIO) is specified.

btowc¹
fgetwc²
fgetws²
fputwc²
fputws²
fwide²
fwprintf²
fwscanf²
getwc²
getwchar²
mbrlen¹
mbrtowc¹
mbsinit¹

mbsrtowcs¹
putwc²
putwchar²
swprintf¹
swscanf²
ungetwc²
vfwprintf²
vswscanf¹
vswprintf¹
vwprintf²
wcrtomb¹
wcscat
wcschr

wcscmp
wcscoll¹
wcscpy
wcscspn
wcsftime¹
__wcsicmp¹
wcslen
wcsncat
wcsncmp
wcsncpy
__wcsnicmp¹
wcspbrk
wcsptime³

wcsrchr
wcsrtombs¹
wcsspn
wcsstr
wcstod¹
wcstod32¹
wcstod64¹
wcstod128¹
wcstof¹
wcstok
wcstol¹
wcstold¹
wcstoll¹

wcstoul¹
wcstoull¹
wcswcs
wcswidth¹
wcsxfrm¹
wctob¹
wcwidth¹
wmemchr
wmemcmp
wmemcpy
wmemmove
wmemset
wprintf²

wscanf²

Note: ¹ These functions are not available when LOCALETYPE(*CLD) is specified on the compilation command.

Note: ² These functions are available only when SYSIFCOPT(*IFSIO) and LOCALETYPE(*LOCALE) are specified on the compilation command.

Note: ³ These functions are available only when LOCALETYPE(*LOCALEUTF) is specified on the compilation command.

<wchar.h> also defines the macro NULL and the types size_t and wchar_t.

For more information about NULL and the types size_t and wchar_t, see <stddef.h>.