1/* -*- buffer-read-only: t -*- vi: set ro: */
2/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
3#line 1
4/* c-strcasecmp.c -- case insensitive string comparator in C locale
5   Copyright (C) 1998-1999, 2005-2006, 2009-2010 Free Software Foundation, Inc.
6
7   This program is free software; you can redistribute it and/or modify
8   it under the terms of the GNU General Public License as published by
9   the Free Software Foundation; either version 3, or (at your option)
10   any later version.
11
12   This program is distributed in the hope that it will be useful,
13   but WITHOUT ANY WARRANTY; without even the implied warranty of
14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   GNU General Public License for more details.
16
17   You should have received a copy of the GNU General Public License
18   along with this program; if not, write to the Free Software Foundation,
19   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
20
21#include <config.h>
22
23/* Specification.  */
24#include "c-strcase.h"
25
26#include <limits.h>
27
28#include "c-ctype.h"
29
30int
31c_strcasecmp (const char *s1, const char *s2)
32{
33  register const unsigned char *p1 = (const unsigned char *) s1;
34  register const unsigned char *p2 = (const unsigned char *) s2;
35  unsigned char c1, c2;
36
37  if (p1 == p2)
38    return 0;
39
40  do
41    {
42      c1 = c_tolower (*p1);
43      c2 = c_tolower (*p2);
44
45      if (c1 == '\0')
46        break;
47
48      ++p1;
49      ++p2;
50    }
51  while (c1 == c2);
52
53  if (UCHAR_MAX <= INT_MAX)
54    return c1 - c2;
55  else
56    /* On machines where 'char' and 'int' are types of the same size, the
57       difference of two 'unsigned char' values - including the sign bit -
58       doesn't fit in an 'int'.  */
59    return (c1 > c2 ? 1 : c1 < c2 ? -1 : 0);
60}
61