/* Compare pieces of UTF-32 strings.

   Copyright (C) 1999, 2002, 2006, 2009-2024 Free Software Foundation, Inc.

   Written by Bruno Haible <bruno@clisp.org>, 2002.

   This file is free software.

   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".

   You can redistribute it and/or modify it under either

     - the terms of the GNU Lesser General Public License as published

       by the Free Software Foundation, either version 3, or (at your

       option) any later version, or

     - the terms of the GNU General Public License as published by the

       Free Software Foundation; either version 2, or (at your option)

       any later version, or

     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".

   This file 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 and the GNU General Public License

   for more details.

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

   License and of the GNU General Public License along with this

   program.  If not, see <https://www.gnu.org/licenses/>.  */

#include <config.h>

/* Specification.  */

#include "unistr.h"

int

u32_cmp (const uint32_t *s1, const uint32_t *s2, size_t n)

{

  for (; n > 0;)

    {

      uint32_t uc1 = *s1++;

      uint32_t uc2 = *s2++;

      if (uc1 == uc2)

        {

          n--;

          continue;

        }

      /* Note that uc1 and uc2 each have at most 31 bits. */

      return (int)uc1 - (int)uc2;

      /* > 0 if uc1 > uc2, < 0 if uc1 < uc2. */

    }

  return 0;

}