annotate lib/wcscmp-impl.h @ 17149:a49df7b88261

errno: port to LynxOS 178 2.2.2 Problem reported by Joel Brobecker in <http://lists.gnu.org/archive/html/bug-gnulib/2012-10/msg00088.html>. * doc/posix-headers/errno.texi (errno.h): Document this. * lib/errno.in.h (EILSEQ, GNULIB_defined_EILSEQ) [!EILSEQ]: New macros. * lib/strerror-override.c, lib/strerror-override.h (strerror_override): Supply a string for EILSEQ. * m4/errno_h.m4 (gl_HEADER_ERRNO_H): Check for EILSEQ.
author Paul Eggert <eggert@cs.ucla.edu>
date Thu, 01 Nov 2012 15:29:14 -0700
parents 8250f2777afc
children e542fd46ad6f
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1 /* Compare two wide strings.
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2 Copyright (C) 1999, 2011-2012 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 wcscmp (const wchar_t *s1, const wchar_t *s2)
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20 {
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21 for (;;)
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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 continue;
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27 /* Note that wc1 and wc2 each have at most 31 bits. */
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28 return (int)wc1 - (int)wc2;
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29 /* > 0 if wc1 > wc2, < 0 if wc1 < wc2,
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30 = 0 if wc1 and wc2 are both '\0'. */
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31 }
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32 }