t-gcd_ui.c
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上传日期:2022-08-06
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- /* Test mpz_gcd_ui.
- Copyright 2003 Free Software Foundation, Inc.
- This file is part of the GNU MP Library.
- The GNU MP 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 3 of the License, or (at your
- option) any later version.
- The GNU MP 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 MP Library. If not, see http://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 %#lxn", got);
- printf (" should be 0n");
- abort ();
- }
- }
- mpz_clear (x);
- }
- int
- main (void)
- {
- tests_start ();
- check_ui_range ();
- tests_end ();
- exit (0);
- }