WCTOMB(3) BSD Library Functions Manual WCTOMB(3)NAME
wctomb, wctomb_l — convert a wide-character code to a character
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdlib.h>
int
wctomb(char *s, wchar_t wchar);
#include <stdlib.h>
#include <xlocale.h>
int
wctomb_l(char *s, wchar_t wchar, locale_t loc);
DESCRIPTION
The wctomb() function converts a wide character, wchar, into a multibyte
character and stores the result in s. The object pointed to by s must be
large enough to accommodate the multibyte character, which may be up to
MB_LEN_MAX bytes.
A call with a null s pointer returns nonzero if the current locale
requires shift states, zero otherwise; if shift states are required, the
shift state is reset to the initial state.
Although the wctomb() function uses the current locale, the wctomb_l()
function may be passed a locale directly. See xlocale(3) for more infor‐
mation.
RETURN VALUES
If s is NULL, the wctomb() function returns nonzero if shift states are
supported, zero otherwise. If s is valid, wctomb() returns the number of
bytes processed in s, or -1 if no multibyte character could be recognized
or converted. In this case, wctomb()'s internal conversion state is
undefined.
ERRORS
The wctomb() function will fail if:
[EILSEQ] An invalid multibyte sequence was detected.
[EINVAL] The internal conversion state is invalid.
SEE ALSOmbtowc(3), wcrtomb(3), wcstombs(3), wctob(3), xlocale(3)STANDARDS
The wctomb() function conforms to ISO/IEC 9899:1999 (“ISO C99”).
BSD April 8, 2004 BSD
