1 /* Case-insensitive string comparison functions in C locale. 2 Copyright (C) 1995-1996, 2001, 2003, 2005, 2009-2012 Free Software 3 Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3, or (at your option) 8 any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, see <http://www.gnu.org/licenses/>. */ 17 18 #ifndef C_STRCASE_H 19 #define C_STRCASE_H 20 21 #include <stddef.h> 22 23 24 /* The functions defined in this file assume the "C" locale and a character 25 set without diacritics (ASCII-US or EBCDIC-US or something like that). 26 Even if the "C" locale on a particular system is an extension of the ASCII 27 character set (like on BeOS, where it is UTF-8, or on AmigaOS, where it 28 is ISO-8859-1), the functions in this file recognize only the ASCII 29 characters. More precisely, one of the string arguments must be an ASCII 30 string; the other one can also contain non-ASCII characters (but then 31 the comparison result will be nonzero). */ 32 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 39 /* Compare strings S1 and S2, ignoring case, returning less than, equal to or 40 greater than zero if S1 is lexicographically less than, equal to or greater 41 than S2. */ 42 extern int c_strcasecmp (const char *s1, const char *s2) _GL_ATTRIBUTE_PURE; 43 44 /* Compare no more than N characters of strings S1 and S2, ignoring case, 45 returning less than, equal to or greater than zero if S1 is 46 lexicographically less than, equal to or greater than S2. */ 47 extern int c_strncasecmp (const char *s1, const char *s2, size_t n) 48 _GL_ATTRIBUTE_PURE; 49 50 51 #ifdef __cplusplus 52 } 53 #endif 54 55 56 #endif /* C_STRCASE_H */ 57