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57 lines
2.0 KiB
C
57 lines
2.0 KiB
C
/* Case-insensitive string comparison functions in C locale.
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Copyright (C) 1995-1996, 2001, 2003, 2005, 2009-2022 Free Software
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Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#ifndef C_STRCASE_H
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#define C_STRCASE_H
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#include <stddef.h>
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/* The functions defined in this file assume the "C" locale and a character
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set without diacritics (ASCII-US or EBCDIC-US or something like that).
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Even if the "C" locale on a particular system is an extension of the ASCII
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character set (like on BeOS, where it is UTF-8, or on AmigaOS, where it
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is ISO-8859-1), the functions in this file recognize only the ASCII
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characters. More precisely, one of the string arguments must be an ASCII
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string; the other one can also contain non-ASCII characters (but then
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the comparison result will be nonzero). */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Compare strings S1 and S2, ignoring case, returning less than, equal to or
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greater than zero if S1 is lexicographically less than, equal to or greater
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than S2. */
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extern int c_strcasecmp (const char *s1, const char *s2) _GL_ATTRIBUTE_PURE;
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/* Compare no more than N characters of strings S1 and S2, ignoring case,
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returning less than, equal to or greater than zero if S1 is
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lexicographically less than, equal to or greater than S2. */
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extern int c_strncasecmp (const char *s1, const char *s2, size_t n)
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_GL_ATTRIBUTE_PURE;
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#ifdef __cplusplus
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}
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#endif
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#endif /* C_STRCASE_H */
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