diff options
Diffstat (limited to 'string/strcspn.c')
-rw-r--r-- | string/strcspn.c | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/string/strcspn.c b/string/strcspn.c deleted file mode 100644 index 1035552a8e..0000000000 --- a/string/strcspn.c +++ /dev/null @@ -1,72 +0,0 @@ -/* Copyright (C) 1991-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <string.h> -#include <stdint.h> -#include <libc-pointer-arith.h> - -#undef strcspn - -#ifndef STRCSPN -# define STRCSPN strcspn -#endif - -/* Return the length of the maximum initial segment of S - which contains no characters from REJECT. */ -size_t -STRCSPN (const char *str, const char *reject) -{ - if (__glibc_unlikely (reject[0] == '\0') || - __glibc_unlikely (reject[1] == '\0')) - return __strchrnul (str, reject [0]) - str; - - /* Use multiple small memsets to enable inlining on most targets. */ - unsigned char table[256]; - unsigned char *p = memset (table, 0, 64); - memset (p + 64, 0, 64); - memset (p + 128, 0, 64); - memset (p + 192, 0, 64); - - unsigned char *s = (unsigned char*) reject; - unsigned char tmp; - do - p[tmp = *s++] = 1; - while (tmp); - - s = (unsigned char*) str; - if (p[s[0]]) return 0; - if (p[s[1]]) return 1; - if (p[s[2]]) return 2; - if (p[s[3]]) return 3; - - s = (unsigned char *) PTR_ALIGN_DOWN (s, 4); - - unsigned int c0, c1, c2, c3; - do - { - s += 4; - c0 = p[s[0]]; - c1 = p[s[1]]; - c2 = p[s[2]]; - c3 = p[s[3]]; - } - while ((c0 | c1 | c2 | c3) == 0); - - size_t count = s - (unsigned char *) str; - return (c0 | c1) != 0 ? count - c0 + 1 : count - c2 + 3; -} -libc_hidden_builtin_def (strcspn) |