dive.c
上传用户:qaz666999
上传日期:2022-08-06
资源大小:2570k
文件大小:2k
- /* Test mpz_mul, mpz_divexact.
- Copyright 1996, 2001, 2002 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"
- int
- main (int argc, char **argv)
- {
- mpz_t op1, op2;
- mpz_t prod, quot;
- mp_size_t size;
- int i;
- int reps = 5000;
- gmp_randstate_ptr rands;
- mpz_t bs;
- unsigned long bsi, size_range;
- tests_start ();
- TESTS_REPS (reps, argv, argc);
- rands = RANDS;
- mp_trace_base = -16;
- mpz_init (bs);
- mpz_init (op1);
- mpz_init (op2);
- mpz_init (prod);
- mpz_init (quot);
- for (i = 0; i < reps; i++)
- {
- mpz_urandomb (bs, rands, 32);
- size_range = mpz_get_ui (bs) % 17 + 2; /* 0..2047 bit operands */
- mpz_urandomb (bs, rands, size_range);
- size = mpz_get_ui (bs);
- mpz_rrandomb (op1, rands, size);
- do
- {
- mpz_urandomb (bs, rands, size_range);
- size = mpz_get_ui (bs);
- mpz_rrandomb (op2, rands, size);
- }
- while (mpz_sgn (op2) == 0);
- mpz_urandomb (bs, rands, 2);
- bsi = mpz_get_ui (bs);
- if ((bsi & 1) != 0)
- mpz_neg (op1, op1);
- if ((bsi & 2) != 0)
- mpz_neg (op2, op2);
- mpz_mul (prod, op1, op2);
- mpz_divexact (quot, prod, op2);
- MPZ_CHECK_FORMAT (quot);
- if (mpz_cmp (quot, op1) != 0)
- {
- printf ("Wrong results:n");
- mpz_trace (" got ", quot);
- mpz_trace (" want ", op1);
- mpz_trace (" dividend", prod);
- mpz_trace (" divisor ", op2);
- abort ();
- }
- }
- mpz_clear (bs);
- mpz_clear (op1);
- mpz_clear (op2);
- mpz_clear (prod);
- mpz_clear (quot);
- tests_end ();
- exit (0);
- }