NAME
wctomb —
convert a wide-character code to a
character
LIBRARY
library “libc”
SYNOPSIS
#include
<stdlib.h>
int
wctomb(char
*mbchar, wchar_t
wchar);
DESCRIPTION
Thewctomb()
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 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 ALSO
STANDARDS
The wctomb() function conforms to
ISO/IEC 9899:1999
(“ISO C99”).