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14290
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1 /* Compare two wide strings. |
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2 Copyright (C) 1999, 2011 Free Software Foundation, Inc. |
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3 Written by Bruno Haible <bruno@clisp.org>, 1999. |
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4 |
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5 This program is free software: you can redistribute it and/or modify |
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6 it under the terms of the GNU General Public License as published by |
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7 the Free Software Foundation; either version 3 of the License, or |
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8 (at your option) any later version. |
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9 |
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10 This program 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 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 General Public License |
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16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
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17 |
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18 int |
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19 wcsncmp (const wchar_t *s1, const wchar_t *s2, size_t n) |
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20 { |
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21 for (; n > 0;) |
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22 { |
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23 wchar_t wc1 = *s1++; |
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24 wchar_t wc2 = *s2++; |
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25 if (wc1 != (wchar_t)'\0' && wc1 == wc2) |
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26 { |
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27 n--; |
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28 continue; |
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29 } |
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30 /* Note that wc1 and wc2 each have at most 31 bits. */ |
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31 return (int)wc1 - (int)wc2; |
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32 /* > 0 if wc1 > wc2, < 0 if wc1 < wc2, |
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33 = 0 if wc1 and wc2 are both '\0'. */ |
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34 } |
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35 return 0; |
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36 } |
