66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
/* Test mpz_gcd_ui.
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Copyright 2003 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include <stdio.h>
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#include <stdlib.h>
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#include "gmp.h"
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#include "gmp-impl.h"
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#include "tests.h"
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/* Check mpz_gcd_ui doesn't try to return a value out of range.
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This was wrong in gmp 4.1.2 with a long long limb. */
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static void
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check_ui_range (void)
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{
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unsigned long got;
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mpz_t x;
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int i;
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mpz_init_set_ui (x, ULONG_MAX);
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for (i = 0; i < 20; i++)
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{
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mpz_mul_2exp (x, x, 1L);
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got = mpz_gcd_ui (NULL, x, 0L);
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if (got != 0)
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{
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printf ("mpz_gcd_ui (ULONG_MAX*2^%d, 0)\n", i);
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printf (" return %#lx\n", got);
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printf (" should be 0\n");
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abort ();
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}
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}
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mpz_clear (x);
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}
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int
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main (void)
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{
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tests_start ();
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check_ui_range ();
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tests_end ();
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exit (0);
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}
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