Remove old code

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

1 files changed, 0 insertions, 30 deletions

diff --git a/lib/string/memchr.c b/lib/string/memchr.c
deleted file mode 100644
index d0f670f..0000000
--- a/lib/string/memchr.c
+++ /dev/null
@@ -1,30 +0,0 @@
-/* SPDX-License-Identifier: MIT */
-/* Derived from musl libc (Copyright © 2005-2020 Rich Felker, et al.) */
-
-#include <string.h>
-#include <stdint.h>
-#include <limits.h>
-
-#define SS (sizeof(size_t))
-#define ALIGN (sizeof(size_t)-1)
-#define ONES ((size_t)-1/UCHAR_MAX)
-#define HIGHS (ONES * (UCHAR_MAX/2+1))
-#define HASZERO(x) ((x)-ONES & ~(x) & HIGHS)
-
-void *memchr(const void *src, int c, size_t n)
-{
-	const unsigned char *s = src;
-	c = (unsigned char)c;
-#ifdef __GNUC__
-	for (; ((uintptr_t)s & ALIGN) && n && *s != c; s++, n--);
-	if (n && *s != c) {
-		typedef size_t __attribute__((__may_alias__)) word;
-		const word *w;
-		size_t k = ONES * c;
-		for (w = (const void *)s; n>=SS && !HASZERO(*w^k); w++, n-=SS);
-		s = (const void *)w;
-	}
-#endif
-	for (; n && *s != c; s++, n--);
-	return n ? (void *)s : 0;
-}