110 lines
2.3 KiB
C
110 lines
2.3 KiB
C
/* Test mpq_cmp.
|
|
|
|
Copyright (C) 1996 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 Library General Public License as published by
|
|
the Free Software Foundation; either version 2 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 Library General Public
|
|
License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public License
|
|
along with the GNU MP Library; see the file COPYING.LIB. If not, write to
|
|
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
|
|
MA 02111-1307, USA. */
|
|
|
|
#include <stdio.h>
|
|
#include "gmp.h"
|
|
#include "gmp-impl.h"
|
|
#include "urandom.h"
|
|
|
|
#define NUM(x) (&((x)->_mp_num))
|
|
#define DEN(x) (&((x)->_mp_den))
|
|
|
|
#define SGN(x) ((x) < 0 ? -1 : (x) > 0 ? 1 : 0)
|
|
|
|
ref_mpq_cmp (a, b)
|
|
mpq_t a, 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 probabilty of finding an error */
|
|
#endif
|
|
|
|
main (argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
mpq_t a, b;
|
|
mp_size_t size;
|
|
int reps = 100000;
|
|
int i;
|
|
int cc, ccref;
|
|
|
|
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 ();
|
|
}
|
|
|
|
exit (0);
|
|
}
|
|
|
|
dump (x)
|
|
mpq_t x;
|
|
{
|
|
mpz_out_str (stdout, 10, NUM (x));
|
|
printf ("/");
|
|
mpz_out_str (stdout, 10, DEN (x));
|
|
printf ("\n");
|
|
}
|