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/* Test mpq_cmp.
Copyright 1996, 2001 Free Software Foundation, Inc.
This file is part of the GNU MP Library test suite.
The GNU MP Library test suite is free software; you can redistribute it
and/or modify it under the terms of the GNU 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 test suite 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 General
Public License for more details.
You should have received a copy of the GNU General Public License along with
the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */
#include <stdio.h>
#include <stdlib.h>
#include "gmp-impl.h"
#include "tests.h"
#define SGN(x) ((x) < 0 ? -1 : (x) > 0 ? 1 : 0)
int
ref_mpq_cmp (mpq_t a, mpq_t b)
{
mpz_t ai, bi;
int cc;
mpz_init (ai);
mpz_init (bi);
mpz_mul (ai, NUM (a), DEN (b));
mpz_mul (bi, NUM (b), DEN (a));
cc = mpz_cmp (ai, bi);
mpz_clear (ai);
mpz_clear (bi);
return cc;
}
#ifndef SIZE
#define SIZE 8 /* increasing this lowers the probability of finding an error */
#endif
int
main (int argc, char **argv)
{
mpq_t a, b;
mp_size_t size;
int reps = 10000;
int i;
int cc, ccref;
tests_start ();
if (argc == 2)
reps = atoi (argv[1]);
mpq_init (a);
mpq_init (b);
for (i = 0; i < reps; i++)
{
size = urandom () % SIZE - SIZE/2;
mpz_random2 (NUM (a), size);
do
{
size = urandom () % SIZE - SIZE/2;
mpz_random2 (DEN (a), size);
}
while (mpz_cmp_ui (DEN (a), 0) == 0);
size = urandom () % SIZE - SIZE/2;
mpz_random2 (NUM (b), size);
do
{
size = urandom () % SIZE - SIZE/2;
mpz_random2 (DEN (b), size);
}
while (mpz_cmp_ui (DEN (b), 0) == 0);
mpq_canonicalize (a);
mpq_canonicalize (b);
ccref = ref_mpq_cmp (a, b);
cc = mpq_cmp (a, b);
if (SGN (ccref) != SGN (cc))
abort ();
}
mpq_clear (a);
mpq_clear (b);
tests_end ();
exit (0);
}
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