NAME
mbstowcs —
convert a character string to a
wide-character string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include
<stdlib.h>
size_t
mbstowcs(wchar_t * restrict
wcstring, const char * restrict mbstring,
size_t nwchars);
DESCRIPTION
The
mbstowcs()
function converts a multibyte character string
mbstring beginning in the initial conversion state
into a wide character string wcstring. No more than
nwchars wide characters are stored. A terminating null
wide character is appended if there is room.
RETURN VALUES
The mbstowcs() function returns the number
of wide characters converted, not counting any terminating null wide
character, or -1 if an invalid multibyte character was encountered.
ERRORS
The mbstowcs() function will fail if:
- [
EILSEQ] - An invalid multibyte sequence was detected.
- [
EINVAL] - The conversion state is invalid.
SEE ALSO
STANDARDS
The mbstowcs() function conforms to
ISO/IEC 9899:1999
(“ISO C99”).