~linaro-toolchain-dev/cortex-strings/trunk

/* Copyright (C) 1991, 1996, 1997, 2003 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <string.h>

#include "memcopy.h"

#undef strcmp

/* Compare S1 and S2, returning less than, equal to or

   greater than zero if S1 is lexicographically less than,

   equal to or greater than S2.  */

int

strcmp (p1, p2)

     const char *p1;

     const char *p2;

{

  register const unsigned char *s1 = (const unsigned char *) p1;

  register const unsigned char *s2 = (const unsigned char *) p2;

  unsigned char c1, c2;

  do

    {

      c1 = (unsigned char) *s1++;

      c2 = (unsigned char) *s2++;

      if (c1 == '\0')

	return c1 - c2;

    }

  while (c1 == c2);

  return c1 - c2;

}