From 8cace3f05003c6cb4d38c36890055f03151c2ad4 Mon Sep 17 00:00:00 2001 From: Richard Qin Date: Fri, 16 Oct 2026 02:39:56 +0800 Subject: Remove old code Signed-off-by: Richard Qin --- lib/string/memccpy.c | 37 ------------------------------------- 1 file changed, 37 deletions(-) delete mode 100644 lib/string/memccpy.c (limited to 'lib/string/memccpy.c') 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 -#include -#include - -#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; -} -- cgit v1.2.3