Remove old code

Signed-off-by: Richard Qin <richard.qin.x@gmail.com>

1 files changed, 0 insertions, 45 deletions

diff --git a/lib/string/memmove.c b/lib/string/memmove.c
deleted file mode 100644
index 56e1a81..0000000
--- a/lib/string/memmove.c
+++ /dev/null
@@ -1,45 +0,0 @@
-/* SPDX-License-Identifier: MIT */
-/* Derived from musl libc (Copyright © 2005-2020 Rich Felker, et al.) */
-
-#include <string.h>
-#include <stdint.h>
-
-#ifdef __GNUC__
-typedef __attribute__((__may_alias__)) size_t WT;
-#define WS (sizeof(WT))
-#endif
-
-void *memmove(void *dest, const void *src, size_t n)
-{
-	char *d = dest;
-	const char *s = src;
-
-	if (d==s) return d;
-	if ((uintptr_t)s-(uintptr_t)d-n <= -2*n) return memcpy(d, s, n);
-
-	if (d<s) {
-#ifdef __GNUC__
-		if ((uintptr_t)s % WS == (uintptr_t)d % WS) {
-			while ((uintptr_t)d % WS) {
-				if (!n--) return dest;
-				*d++ = *s++;
-			}
-			for (; n>=WS; n-=WS, d+=WS, s+=WS) *(WT *)d = *(WT *)s;
-		}
-#endif
-		for (; n; n--) *d++ = *s++;
-	} else {
-#ifdef __GNUC__
-		if ((uintptr_t)s % WS == (uintptr_t)d % WS) {
-			while ((uintptr_t)(d+n) % WS) {
-				if (!n--) return dest;
-				d[n] = s[n];
-			}
-			while (n>=WS) n-=WS, *(WT *)(d+n) = *(WT *)(s+n);
-		}
-#endif
-		while (n) n--, d[n] = s[n];
-	}
-
-	return dest;
-}