Currently, wmemcpy is implemented as a loop, which the compiler aggressively optimizes. From a binary perspective it's probably cleaner to implement it as a call to memcpy.

diff --git a/src/string/wmemcpy.c b/src/string/wmemcpy.c

index 52e6e6e..272f37a 100644

--- a/src/string/wmemcpy.c

+++ b/src/string/wmemcpy.c

@@ -1,8 +1,7 @@

+#include <string.h>

#include <wchar.h>

wchar_t *wmemcpy(wchar_t *restrict d, const wchar_t *restrict s, size_t n)

{

- wchar_t *a = d;

- while (n--) *d++ = *s++;

- return a;

+ return memcpy(d, s, n * sizeof(wchar_t));

}