Retro68/gcc/newlib/libc/string/wcsxfrm.c
2017-10-07 02:16:47 +02:00

54 lines
1.3 KiB
C

/*
FUNCTION
<<wcsxfrm>>---locale-specific wide-character string transformation
INDEX
wcsxfrm
ANSI_SYNOPSIS
#include <wchar.h>
int wcsxfrm(wchar_t *__restrict <[stra]>,
const wchar_t *__restrict <[strb]>, size_t <[n]>);
TRAD_SYNOPSIS
#include <wchar.h>
size_t wcsxfrm(<[stra]>, <[strb]>, <[n]>)
wchar_t *__restrict <[stra]>;
wchar_t *__restrict <[strb]>;
size_t <[n]>
DESCRIPTION
<<wcsxfrm>> transforms the wide-character string pointed to by
<[strb]> to the wide-character string pointed to by <[stra]>,
Comparing two transformed wide strings with <<wcscmp>> should return
the same result as comparing the original strings with <<wcscoll>>.
No more than <[n]> wide characters are transformed, including the
trailing null character.
If <[n]> is 0, <[stra]> may be a NULL pointer.
(NOT Cygwin:) The current implementation of <<wcsxfrm>> simply uses
<<wcslcpy>> and does not support any language-specific transformations.
RETURNS
<<wcsxfrm>> returns the length of the transformed wide character
string. if the return value is greater or equal to <[n]>, the
content of <[stra]> is undefined.
PORTABILITY
<<wcsxfrm>> is ISO/IEC 9899/AMD1:1995 (ISO C).
*/
#include <_ansi.h>
#include <wchar.h>
size_t
_DEFUN (wcsxfrm, (a, b, n),
wchar_t *__restrict a _AND
_CONST wchar_t *__restrict b _AND
size_t n)
{
return wcslcpy (a, b, n);
}