<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` `wcsftime`¹ `__wcsicmp¹` `wcslen` `wcsncat` `wcsncmp` `wcsncpy` `__wcsnicmp¹` `wcspbrk` `wcsptime³`	`wcsrchr` `wcsrtombs¹` `wcsspn` `wcsstr` `wcstod¹` `wcstod32¹` `wcstod64¹` `wcstod128¹` `wcstok` `wcstol¹` `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>.

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