reactos/sdk/lib/crt/string/_wcslwr_s.c

39 lines
669 B
C

/*
* The C RunTime DLL
*
* Implements C run-time functionality as known from UNIX.
*
* Copyright 1996,1998 Marcus Meissner
* Copyright 1996 Jukka Iivonen
* Copyright 1997 Uwe Bonnes
*/
#include <precomp.h>
/*
* @implemented
*/
int _wcslwr_s(wchar_t* str, size_t n)
{
wchar_t *ptr=str;
if (!str || !n)
{
if (str) *str = '\0';
*_errno() = EINVAL;
return EINVAL;
}
while (n--)
{
if (!*ptr) return 0;
*ptr = towlower(*ptr);
ptr++;
}
/* MSDN claims that the function should return and set errno to
* ERANGE, which doesn't seem to be true based on the tests. */
*str = '\0';
*_errno() = EINVAL;
return EINVAL;
}