| 1 | /* Copyright (C) 1995-2022 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #include <wchar.h> |
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| 19 | |
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| 20 | #ifndef WCSCMP |
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| 21 | # define WCSCMP __wcscmp |
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| 22 | #endif |
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| 23 | |
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| 24 | /* Compare S1 and S2, returning less than, equal to or |
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| 25 | greater than zero if S1 is lexicographically less than, |
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| 26 | equal to or greater than S2. */ |
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| 27 | int |
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| 28 | WCSCMP (const wchar_t *s1, const wchar_t *s2) |
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| 29 | { |
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| 30 | wchar_t c1, c2; |
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| 31 | |
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| 32 | do |
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| 33 | { |
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| 34 | c1 = *s1++; |
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| 35 | c2 = *s2++; |
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| 36 | if (c2 == L'\0') |
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| 37 | return c1 - c2; |
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| 38 | } |
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| 39 | while (c1 == c2); |
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| 40 | |
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| 41 | return c1 < c2 ? -1 : 1; |
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| 42 | } |
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| 43 | libc_hidden_def (WCSCMP) |
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| 44 | weak_alias (WCSCMP, wcscmp) |
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| 45 | |
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