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/* 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 = 20000;
gmp_randstate_ptr rands;
mpz_t bs;
unsigned long bsi, size_range;
tests_start ();
rands = RANDS;
mp_trace_base = -16;
mpz_init (bs);
if (argc == 2)
reps = atoi (argv[1]);
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) % 10 + 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);
}
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