| 1 | /* Case-insensitive string comparison functions in C locale.
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| 2 | Copyright (C) 1995-1996, 2001, 2003, 2005, 2009-2022 Free Software
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| 3 | Foundation, Inc.
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| 4 |
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| 5 | This file is free software: you can redistribute it and/or modify
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| 6 | it under the terms of the GNU Lesser General Public License as
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| 7 | published by the Free Software Foundation; either version 2.1 of the
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| 8 | License, or (at your option) any later version.
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| 9 |
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| 10 | This file is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU Lesser General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU Lesser General Public License
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| 16 | along with this program. If not, see <https://www.gnu.org/licenses/>. */
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| 17 |
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| 18 | #ifndef C_STRCASE_H
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| 19 | #define C_STRCASE_H
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| 20 |
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| 21 | #include <stddef.h>
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| 22 |
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| 23 |
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| 24 | /* The functions defined in this file assume the "C" locale and a character
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| 25 | set without diacritics (ASCII-US or EBCDIC-US or something like that).
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| 26 | Even if the "C" locale on a particular system is an extension of the ASCII
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| 27 | character set (like on BeOS, where it is UTF-8, or on AmigaOS, where it
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| 28 | is ISO-8859-1), the functions in this file recognize only the ASCII
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| 29 | characters. More precisely, one of the string arguments must be an ASCII
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| 30 | string; the other one can also contain non-ASCII characters (but then
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| 31 | the comparison result will be nonzero). */
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| 32 |
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| 33 |
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| 34 | #ifdef __cplusplus
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| 35 | extern "C" {
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| 36 | #endif
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| 37 |
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| 38 |
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| 39 | /* Compare strings S1 and S2, ignoring case, returning less than, equal to or
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| 40 | greater than zero if S1 is lexicographically less than, equal to or greater
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| 41 | than S2. */
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| 42 | extern int c_strcasecmp (const char *s1, const char *s2) _GL_ATTRIBUTE_PURE;
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| 43 |
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| 44 | /* Compare no more than N characters of strings S1 and S2, ignoring case,
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| 45 | returning less than, equal to or greater than zero if S1 is
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| 46 | lexicographically less than, equal to or greater than S2. */
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| 47 | extern int c_strncasecmp (const char *s1, const char *s2, size_t n)
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| 48 | _GL_ATTRIBUTE_PURE;
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| 49 |
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| 50 |
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| 51 | #ifdef __cplusplus
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| 52 | }
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| 53 | #endif
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| 54 |
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| 55 |
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| 56 | #endif /* C_STRCASE_H */
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