Remove old code

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

1 files changed, 0 insertions, 37 deletions

diff --git a/lib/string/memccpy.c b/lib/string/memccpy.c
deleted file mode 100644
index 99f146f..0000000
--- a/lib/string/memccpy.c
+++ /dev/null
@@ -1,37 +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 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 *memccpy(void *restrict dest, const void *restrict src, int c, size_t n)
-{
-	unsigned char *d = dest;
-	const unsigned char *s = src;
-
-	c = (unsigned char)c;
-#ifdef __GNUC__
-	typedef size_t __attribute__((__may_alias__)) word;
-	word *wd;
-	const word *ws;
-	if (((uintptr_t)s & ALIGN) == ((uintptr_t)d & ALIGN)) {
-		for (; ((uintptr_t)s & ALIGN) && n && (*d=*s)!=c; n--, s++, d++);
-		if ((uintptr_t)s & ALIGN) goto tail;
-		size_t k = ONES * c;
-		wd=(void *)d; ws=(const void *)s;
-		for (; n>=sizeof(size_t) && !HASZERO(*ws^k);
-		       n-=sizeof(size_t), ws++, wd++) *wd = *ws;
-		d=(void *)wd; s=(const void *)ws;
-	}
-#endif
-	for (; n && (*d=*s)!=c; n--, s++, d++);
-tail:
-	if (n) return d+1;
-	return 0;
-}