WCTOMB(3) BSD Library Functions Manual WCTOMB(3)NAMEwctomb — convert a wide-character code to a character
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdlib.h>
int
wctomb(char *mbchar, wchar_t wchar);
DESCRIPTION
The wctomb() function converts a wide character wchar into a multibyte
character and stores the result in mbchar. The object pointed to by
mbchar must be large enough to accommodate the multibyte character, which
may be up to MB_LEN_MAX bytes.
A call with a null mbchar 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.
RETURN VALUES
If mbchar is NULL, the wctomb() function returns nonzero if shift states
are supported, zero otherwise. If mbchar is valid, wctomb() returns the
number of bytes processed in mbchar, or -1 if no multibyte character
could be recognized or converted. In this case, wctomb()'s internal con‐
version 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)STANDARDS
The wctomb() function conforms to ISO/IEC 9899:1999 (“ISO C99”).
BSD April 8, 2004 BSD
