diff options
Diffstat (limited to 'na/lib/string/strlen.c')
| -rw-r--r-- | na/lib/string/strlen.c | 25 |
1 files changed, 0 insertions, 25 deletions
diff --git a/na/lib/string/strlen.c b/na/lib/string/strlen.c deleted file mode 100644 index 76e14f2..0000000 --- a/na/lib/string/strlen.c +++ /dev/null @@ -1,25 +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)) -#define ONES ((size_t)-1/UCHAR_MAX) -#define HIGHS (ONES * (UCHAR_MAX/2+1)) -#define HASZERO(x) ((x)-ONES & ~(x) & HIGHS) - -size_t strlen(const char *s) -{ - const char *a = s; -#ifdef __GNUC__ - typedef size_t __attribute__((__may_alias__)) word; - const word *w; - for (; (uintptr_t)s % ALIGN; s++) if (!*s) return s-a; - for (w = (const void *)s; !HASZERO(*w); w++); - s = (const void *)w; -#endif - for (; *s; s++); - return s-a; -} |
