| /* Test mpz_divexact_ui. |
| |
| Copyright 1996, 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_random (int argc, char *argv[]) |
| { |
| gmp_randstate_ptr rands = RANDS; |
| int reps = 500000; |
| mpz_t a, q, got; |
| int i, qneg; |
| unsigned long d; |
| |
| if (argc == 2) |
| reps = atoi (argv[1]); |
| |
| mpz_init (a); |
| mpz_init (q); |
| mpz_init (got); |
| |
| for (i = 0; i < reps; i++) |
| { |
| d = (unsigned long) urandom(); |
| mpz_erandomb (q, rands, 512); |
| mpz_mul_ui (a, q, d); |
| |
| for (qneg = 0; qneg <= 1; qneg++) |
| { |
| mpz_divexact_ui (got, a, d); |
| MPZ_CHECK_FORMAT (got); |
| if (mpz_cmp (got, q) != 0) |
| { |
| printf ("mpz_divexact_ui wrong\n"); |
| mpz_trace (" a", a); |
| printf (" d=%lu\n", d); |
| mpz_trace (" q", q); |
| mpz_trace (" got", got); |
| abort (); |
| } |
| |
| mpz_neg (q, q); |
| mpz_neg (a, a); |
| } |
| |
| } |
| |
| mpz_clear (a); |
| mpz_clear (q); |
| mpz_clear (got); |
| } |
| |
| |
| int |
| main (int argc, char **argv) |
| { |
| tests_start (); |
| |
| check_random (argc, argv); |
| |
| tests_end (); |
| exit (0); |
| } |