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t-divis_2exp.c
Package: gmp-5.0.1.tar.gz [view]
Upload User: qaz666999
Upload Date: 2022-08-06
Package Size: 2570k
Code Size: 3k
Category:
Algorithm
Development Platform:
Unix_Linux
- /* test mpz_divisible_2exp_p */
- /*
- Copyright 2001 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"
- void
- check_one (mpz_srcptr a, unsigned long d, int want)
- {
- int got;
- got = (mpz_divisible_2exp_p (a, d) != 0);
- if (want != got)
- {
- printf ("mpz_divisible_2exp_p wrongn");
- printf (" expected %d got %dn", want, got);
- mpz_trace (" a", a);
- printf (" d=%lun", d);
- mp_trace_base = -16;
- mpz_trace (" a", a);
- printf (" d=0x%lXn", d);
- abort ();
- }
- }
- void
- check_data (void)
- {
- static const struct {
- const char *a;
- unsigned long d;
- int want;
- } data[] = {
- { "0", 0, 1 },
- { "0", 1, 1 },
- { "0", 2, 1 },
- { "0", 3, 1 },
- { "1", 0, 1 },
- { "1", 1, 0 },
- { "1", 2, 0 },
- { "1", 3, 0 },
- { "1", 10000, 0 },
- { "4", 0, 1 },
- { "4", 1, 1 },
- { "4", 2, 1 },
- { "4", 3, 0 },
- { "4", 4, 0 },
- { "4", 10000, 0 },
- { "0x80000000", 31, 1 },
- { "0x80000000", 32, 0 },
- { "0x80000000", 64, 0 },
- { "0x100000000", 32, 1 },
- { "0x100000000", 33, 0 },
- { "0x100000000", 64, 0 },
- { "0x8000000000000000", 63, 1 },
- { "0x8000000000000000", 64, 0 },
- { "0x8000000000000000", 128, 0 },
- { "0x10000000000000000", 64, 1 },
- { "0x10000000000000000", 65, 0 },
- { "0x10000000000000000", 128, 0 },
- { "0x10000000000000000", 256, 0 },
- { "0x10000000000000000100000000", 32, 1 },
- { "0x10000000000000000100000000", 33, 0 },
- { "0x10000000000000000100000000", 64, 0 },
- { "0x1000000000000000010000000000000000", 64, 1 },
- { "0x1000000000000000010000000000000000", 65, 0 },
- { "0x1000000000000000010000000000000000", 128, 0 },
- { "0x1000000000000000010000000000000000", 256, 0 },
- { "0x1000000000000000010000000000000000", 1024, 0 },
- };
- mpz_t a, d;
- int i;
- mpz_init (a);
- mpz_init (d);
- for (i = 0; i < numberof (data); i++)
- {
- mpz_set_str_or_abort (a, data[i].a, 0);
- check_one (a, data[i].d, data[i].want);
- mpz_neg (a, a);
- check_one (a, data[i].d, data[i].want);
- }
- mpz_clear (a);
- mpz_clear (d);
- }
- int
- main (int argc, char *argv[])
- {
- tests_start ();
- check_data ();
- tests_end ();
- exit (0);
- }