1#include <wchar.h>
2
3wchar_t *wcsncat(wchar_t *restrict d, const wchar_t *restrict s, size_t n)
4{
5	wchar_t *a = d;
6	d += wcslen(d);
7	while (n && *s) n--, *d++ = *s++;
8	*d++ = 0;
9	return a;
10}
11