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/memchr.c | 30 ------------------------------ 1 file changed, 30 deletions(-) delete mode 100644 lib/string/memchr.c (limited to 'lib/string/memchr.c') 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 -#include -#include - -#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; -} -- cgit v1.2.3