reactos/sdk/lib/crt/mbstring/mbsdec.c

#include <precomp.h>
#include <mbstring.h>

/*
 * @implemented
 */
unsigned char * _mbsdec(const unsigned char *str, const unsigned char *cur)
{
	unsigned char *s = (unsigned char *)cur;
	if ( str >= cur )
		return NULL;

	s--;
	if (_ismbblead(*(s-1)) )
		s--;

	return s;
}