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/* Test mpf_mul, mpf_div, mpf_ui_div, and mpf_div_ui.
Copyright 1996, 2000, 2001, 2003 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"
#ifndef SIZE
#define SIZE 16
#endif
int
main (int argc, char **argv)
{
mp_size_t size;
mp_exp_t exp;
int reps = 10000;
int i;
mpf_t u, v, w, x;
mp_size_t bprec = SIZE * GMP_LIMB_BITS;
mpf_t rerr, limit_rerr;
unsigned long ulimb, vlimb;
int single_flag;
tests_start ();
if (argc > 1)
{
reps = strtol (argv[1], 0, 0);
if (argc > 2)
bprec = strtol (argv[2], 0, 0);
}
mpf_set_default_prec (bprec);
mpf_init (rerr);
mpf_init (limit_rerr);
mpf_init (u);
mpf_init (v);
mpf_init (w);
mpf_init (x);
for (i = 0; i < reps; i++)
{
mp_size_t res_prec;
res_prec = urandom () % bprec + 1;
mpf_set_prec (w, res_prec);
mpf_set_prec (x, res_prec);
mpf_set_ui (limit_rerr, 1);
mpf_div_2exp (limit_rerr, limit_rerr, res_prec - 1);
single_flag = 0;
if ((urandom () & 1) != 0)
{
size = urandom () % (2 * SIZE) - SIZE;
exp = urandom () % SIZE;
mpf_random2 (u, size, exp);
}
else
{
ulimb = urandom ();
mpf_set_ui (u, ulimb);
single_flag = 1;
}
if ((urandom () & 1) != 0)
{
size = urandom () % (2 * SIZE) - SIZE;
exp = urandom () % SIZE;
mpf_random2 (v, size, exp);
}
else
{
vlimb = urandom ();
mpf_set_ui (v, vlimb);
single_flag = 2;
}
if (mpf_sgn (v) == 0)
continue;
mpf_div (w, u, v);
mpf_mul (x, w, v);
mpf_reldiff (rerr, u, x);
if (mpf_cmp (rerr, limit_rerr) > 0)
{
printf ("ERROR in mpf_mul or mpf_div after %d tests\n", i);
printf (" u = "); mpf_dump (u);
printf (" v = "); mpf_dump (v);
printf (" x = "); mpf_dump (x);
printf (" w = "); mpf_dump (w);
abort ();
}
if (single_flag == 2)
{
mpf_div_ui (x, u, vlimb);
mpf_reldiff (rerr, w, x);
if (mpf_cmp (rerr, limit_rerr) > 0)
{
printf ("ERROR in mpf_div or mpf_div_ui after %d tests\n", i);
printf (" u = "); mpf_dump (u);
printf (" v = "); mpf_dump (v);
printf (" x = "); mpf_dump (x);
printf (" w = "); mpf_dump (w);
abort ();
}
}
if (single_flag == 1)
{
mpf_ui_div (x, ulimb, v);
mpf_reldiff (rerr, w, x);
if (mpf_cmp (rerr, limit_rerr) > 0)
{
printf ("ERROR in mpf_div or mpf_ui_div after %d tests\n", i);
printf (" u = "); mpf_dump (u);
printf (" v = "); mpf_dump (v);
printf (" x = "); mpf_dump (x);
printf (" w = "); mpf_dump (w);
abort ();
}
}
}
mpf_clear (rerr);
mpf_clear (limit_rerr);
mpf_clear (u);
mpf_clear (v);
mpf_clear (w);
mpf_clear (x);
tests_end ();
exit (0);
}
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