view lib/wcscasecmp-impl.h @ 17480:f40b3156a43e

selinux-at: omit unnecessary include * lib/selinux-at.c: Don't include dosname.h; not needed, since this source file doesn't use its macros, and subsidiary files that use the macros already include it.
author Paul Eggert <eggert@cs.ucla.edu>
date Fri, 23 Aug 2013 13:53:46 -0700 (2013-08-23)
parents e542fd46ad6f
children 344018b6e5d7
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/* Compare two wide strings ignoring case.
   Copyright (C) 1999, 2011-2013 Free Software Foundation, Inc.
   Written by Bruno Haible <bruno@clisp.org>, 2011.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

int
wcscasecmp (const wchar_t *s1, const wchar_t *s2)
{
  for (;;)
    {
      wchar_t wc1 = towlower (*s1++);
      wchar_t wc2 = towlower (*s2++);
      if (wc1 != (wchar_t)'\0' && wc1 == wc2)
        continue;
      /* Note that wc1 and wc2 each have at most 31 bits.  */
      return (int)wc1 - (int)wc2;
             /* > 0 if wc1 > wc2, < 0 if wc1 < wc2,
                = 0 if wc1 and wc2 are both '\0'.  */
    }
}