diff options
Diffstat (limited to 'lib/streq.h')
| -rw-r--r-- | lib/streq.h | 186 |
1 files changed, 0 insertions, 186 deletions
diff --git a/lib/streq.h b/lib/streq.h deleted file mode 100644 index 8593de6d..00000000 --- a/lib/streq.h +++ /dev/null @@ -1,186 +0,0 @@ -/* Optimized string comparison. - Copyright (C) 2001-2002, 2007, 2009-2024 Free Software Foundation, Inc. - - This file 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. - - This file 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 this program. If not, see <https://www.gnu.org/licenses/>. */ - -/* Written by Bruno Haible <bruno@clisp.org>. */ - -#ifndef _GL_STREQ_H -#define _GL_STREQ_H - -#include <string.h> - -#ifdef __cplusplus -extern "C" { -#endif - - -/* STREQ_OPT allows to optimize string comparison with a small literal string. - STREQ_OPT (s, "EUC-KR", 'E', 'U', 'C', '-', 'K', 'R', 0, 0, 0) - is semantically equivalent to - strcmp (s, "EUC-KR") == 0 - just faster. */ - -/* Help GCC to generate good code for string comparisons with - immediate strings. */ -#if (defined __GNUC__ || defined __clang__) && defined __OPTIMIZE__ - -static inline int -streq9 (const char *s1, const char *s2) -{ - return strcmp (s1 + 9, s2 + 9) == 0; -} - -static inline int -streq8 (const char *s1, const char *s2, char s28) -{ - if (s1[8] == s28) - { - if (s28 == 0) - return 1; - else - return streq9 (s1, s2); - } - else - return 0; -} - -static inline int -streq7 (const char *s1, const char *s2, char s27, char s28) -{ - if (s1[7] == s27) - { - if (s27 == 0) - return 1; - else - return streq8 (s1, s2, s28); - } - else - return 0; -} - -static inline int -streq6 (const char *s1, const char *s2, char s26, char s27, char s28) -{ - if (s1[6] == s26) - { - if (s26 == 0) - return 1; - else - return streq7 (s1, s2, s27, s28); - } - else - return 0; -} - -static inline int -streq5 (const char *s1, const char *s2, char s25, char s26, char s27, char s28) -{ - if (s1[5] == s25) - { - if (s25 == 0) - return 1; - else - return streq6 (s1, s2, s26, s27, s28); - } - else - return 0; -} - -static inline int -streq4 (const char *s1, const char *s2, char s24, char s25, char s26, char s27, char s28) -{ - if (s1[4] == s24) - { - if (s24 == 0) - return 1; - else - return streq5 (s1, s2, s25, s26, s27, s28); - } - else - return 0; -} - -static inline int -streq3 (const char *s1, const char *s2, char s23, char s24, char s25, char s26, char s27, char s28) -{ - if (s1[3] == s23) - { - if (s23 == 0) - return 1; - else - return streq4 (s1, s2, s24, s25, s26, s27, s28); - } - else - return 0; -} - -static inline int -streq2 (const char *s1, const char *s2, char s22, char s23, char s24, char s25, char s26, char s27, char s28) -{ - if (s1[2] == s22) - { - if (s22 == 0) - return 1; - else - return streq3 (s1, s2, s23, s24, s25, s26, s27, s28); - } - else - return 0; -} - -static inline int -streq1 (const char *s1, const char *s2, char s21, char s22, char s23, char s24, char s25, char s26, char s27, char s28) -{ - if (s1[1] == s21) - { - if (s21 == 0) - return 1; - else - return streq2 (s1, s2, s22, s23, s24, s25, s26, s27, s28); - } - else - return 0; -} - -static inline int -streq0 (const char *s1, const char *s2, char s20, char s21, char s22, char s23, char s24, char s25, char s26, char s27, char s28) -{ - if (s1[0] == s20) - { - if (s20 == 0) - return 1; - else - return streq1 (s1, s2, s21, s22, s23, s24, s25, s26, s27, s28); - } - else - return 0; -} - -#define STREQ_OPT(s1,s2,s20,s21,s22,s23,s24,s25,s26,s27,s28) \ - streq0 (s1, s2, s20, s21, s22, s23, s24, s25, s26, s27, s28) - -#else - -#define STREQ_OPT(s1,s2,s20,s21,s22,s23,s24,s25,s26,s27,s28) \ - (strcmp (s1, s2) == 0) - -#endif - - -#ifdef __cplusplus -} -#endif - -#endif /* _GL_STREQ_H */ |