33 lines
1.2 KiB
C
Executable File
33 lines
1.2 KiB
C
Executable File
/* Compare two wide strings ignoring case.
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Copyright (C) 1999, 2011-2024 Free Software Foundation, Inc.
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Written by Bruno Haible <bruno@clisp.org>, 2011.
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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 3 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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int
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wcscasecmp (const wchar_t *s1, const wchar_t *s2)
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{
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for (;;)
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{
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wchar_t wc1 = towlower (*s1++);
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wchar_t wc2 = towlower (*s2++);
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if (wc1 != (wchar_t)'\0' && wc1 == wc2)
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continue;
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/* Note that wc1 and wc2 each have at most 31 bits. */
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return (int)wc1 - (int)wc2;
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/* > 0 if wc1 > wc2, < 0 if wc1 < wc2,
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= 0 if wc1 and wc2 are both '\0'. */
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}
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}
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