File: [local] / OpenXM_contrib / gmp / mpf / tests / Attic / t-conv.c (download)
Revision 1.1.1.1 (vendor branch), Mon Jan 10 15:35:22 2000 UTC (24 years, 7 months ago) by maekawa
Branch: GMP
CVS Tags: VERSION_2_0_2, RELEASE_20000124, RELEASE_1_1_2 Changes since 1.1: +0 -0
lines
Import gmp 2.0.2
|
/* Test mpf_get_str and mpf_set_str.
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"
#ifndef SIZE
#define SIZE 10
#endif
#ifndef EXPO
#define EXPO 20
#endif
main (argc, argv)
int argc;
char **argv;
{
mpf_t x, y;
int reps = 20000;
int i;
mp_size_t bprec = 100;
mpf_t d, rerr, max_rerr, limit_rerr;
char *str;
long bexp;
long size, exp;
int base;
char buf[SIZE * BITS_PER_MP_LIMB + 5];
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_set_ui (limit_rerr, 1);
mpf_div_2exp (limit_rerr, limit_rerr, bprec);
#if VERBOSE
mpf_dump (limit_rerr);
#endif
mpf_init (rerr);
mpf_init_set_ui (max_rerr, 0);
mpf_init (x);
mpf_init (y);
mpf_init (d);
for (i = 0; i < reps; i++)
{
size = urandom () % (2 * SIZE) - SIZE;
exp = urandom () % EXPO;
mpf_random2 (x, size, exp);
base = urandom () % 35 + 2;
str = mpf_get_str (0, &bexp, base, 0, x);
if (str[0] == '-')
sprintf (buf, "-0.%s@%ld", str + 1, bexp);
else
sprintf (buf, "0.%s@%ld", str, bexp);
mpf_set_str (y, buf, -base);
free (str);
mpf_reldiff (rerr, x, y);
if (mpf_cmp (rerr, max_rerr) > 0)
{
mpf_set (max_rerr, rerr);
#if VERBOSE
mpf_dump (max_rerr);
#endif
if (mpf_cmp (rerr, limit_rerr) > 0)
{
printf ("ERROR after %d tests\n", i);
printf ("base = %d\n", base);
printf (" x = "); mpf_dump (x);
printf (" y = "); mpf_dump (y);
abort ();
}
}
}
exit (0);
}
oo (x)
mpf_t x;
{
int i;
printf (" exp = %ld\n", x->_mp_exp);
printf ("size = %d\n", x->_mp_size);
for (i = ABS (x->_mp_size) - 1; i >= 0; i--)
printf ("%08lX ", x->_mp_d[i]);
printf ("\n");
mpf_dump (x);
}