/* Test mpz_gcd_ui.

Copyright 2003 Free Software Foundation, Inc.

This file is part of the GNU MP Library test suite.

The GNU MP Library test suite 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.

The GNU MP Library test suite 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

the GNU MP Library test suite.  If not, see https://www.gnu.org/licenses/.  */

#include <stdio.h>

#include <stdlib.h>

#include "gmp.h"

#include "gmp-impl.h"

#include "tests.h"

/* Check mpz_gcd_ui doesn't try to return a value out of range.

   This was wrong in gmp 4.1.2 with a long long limb.  */

static void

check_ui_range (void)

{

  unsigned long  got;

  mpz_t  x;

  int  i;

  mpz_init_set_ui (x, ULONG_MAX);

  for (i = 0; i < 20; i++)

    {

      mpz_mul_2exp (x, x, 1L);

      got = mpz_gcd_ui (NULL, x, 0L);

      if (got != 0)

        {

          printf ("mpz_gcd_ui (ULONG_MAX*2^%d, 0)\n", i);

          printf ("   return %#lx\n", got);

          printf ("   should be 0\n");

          abort ();

        }

    }

  mpz_clear (x);

}

int

main (void)

{

  tests_start ();

  check_ui_range ();

  tests_end ();

  exit (0);

}