+.Ft wchar_t *
+.Fn wmemchr "const wchar_t *s" "wchar_t c" "size_t n"
+.Ft int
+.Fn wmemcmp "const wchar_t *s1" "const wchar_t *s2" "size_t n"
+.Ft wchar_t *
+.Fn wmemcpy "wchar_t * restrict s1" "const wchar_t * restrict s2" "size_t n"
+.Ft wchar_t *
+.Fn wmemmove "wchar_t *s1" "const wchar_t *s2" "size_t n"
+.Ft wchar_t *
+.Fn wmemset "wchar_t *s" "wchar_t c" "size_t n"
+.In wchar.h
+.In xlocale.h
+.Ft int
+.Fn wcscasecmp_l "const wchar_t *s1" "const wchar_t *s2" "locale_t loc"
+.Ft int
+.Fn wcsncasecmp_l "const wchar_t *s1" "const wchar_t *s2" "size_t n" "locale_t loc"