math: raise flags in log2l.c on <= 0 arguments, and fix volatile

[musl] / src / locale / wcsxfrm_l.c

#include <wchar.h>

size_t wcsxfrm_l(wchar_t *restrict dest, const wchar_t *restrict src, size_t n, locale_t locale)
{
        return wcsxfrm(dest, src, n);
}