/* Copyright (C) 1996-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996.

   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 <wchar.h>

#ifndef WMEMCMP

# define WMEMCMP wmemcmp

#endif

int

WMEMCMP (const wchar_t *s1, const wchar_t *s2, size_t n)

{

  wchar_t c1;

  wchar_t c2;

  while (n >= 4)

    {

      c1 = s1[0];

      c2 = s2[0];

      if (c1 - c2 != 0)

	return c1 > c2 ? 1 : -1;

      c1 = s1[1];

      c2 = s2[1];

      if (c1 - c2 != 0)

	return c1 > c2 ? 1 : -1;

      c1 = s1[2];

      c2 = s2[2];

      if (c1 - c2 != 0)

	return c1 > c2 ? 1 : -1;

      c1 = s1[3];

      c2 = s2[3];

      if (c1 - c2 != 0)

	return c1 > c2 ? 1 : -1;

      s1 += 4;

      s2 += 4;

      n -= 4;

    }

  if (n > 0)

    {

      c1 = s1[0];

      c2 = s2[0];

      if (c1 - c2 != 0)

	return c1 > c2 ? 1 : -1;

      ++s1;

      ++s2;

      --n;

    }

  if (n > 0)

    {

      c1 = s1[0];

      c2 = s2[0];

      if (c1 - c2 != 0)

	return c1 > c2 ? 1 : -1;

      ++s1;

      ++s2;

      --n;

    }

  if (n > 0)

    {

      c1 = s1[0];

      c2 = s2[0];

      if (c1 - c2 != 0)

	return c1 > c2 ? 1 : -1;

    }

  return 0;

}