kc3-lang/gnulib/lib/wcsncmp-impl.h

• Show log

  Commit

• Hash : d0e37c5d
  Author :
  Date : 2011-02-06T04:47:49
  

  New module 'wcsncmp'.
  
  * modules/wcsncmp: New file.
  * lib/wchar.in.h (wcsncmp): New declaration.
  * lib/wcsncmp.c: New file.
  * lib/wcsncmp-impl.h: New file, from libutf8 with modifications.
  * m4/wcsncmp.m4: New file.
  * m4/wchar_h.m4 (gl_WCHAR_H): Test whether wcsncmp is declared.
  (gl_WCHAR_H_DEFAULTS): Initialize GNULIB_WCSNCMP, HAVE_WCSNCMP.
  * modules/wchar (Makefile.am): Substitute GNULIB_WCSNCMP, HAVE_WCSNCMP.
  * tests/test-wchar-c++.cc: Test the declaration of wcsncmp.
  * doc/posix-functions/wcsncmp.texi: Mention the new module.
  

Download

• lib/wcsncmp-impl.h

• /* Compare two wide strings.
     Copyright (C) 1999, 2011 Free Software Foundation, Inc.
     Written by Bruno Haible <bruno@clisp.org>, 1999.
  
     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
  wcsncmp (const wchar_t *s1, const wchar_t *s2, size_t n)
  {
    for (; n > 0;)
      {
        wchar_t wc1 = *s1++;
        wchar_t wc2 = *s2++;
        if (wc1 != (wchar_t)'\0' && wc1 == wc2)
          {
            n--;
            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'.  */
      }
    return 0;
  }
  

Download