Viewing file:  t-sqrtrem.c (2.84 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* Test mpz_add, mpz_add_ui, mpz_cmp, mpz_cmp, mpz_mul, mpz_sqrtrem.
Copyright 1991, 1993, 1994, 1996, 2000-2002 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"
void dump_abort (mpz_t, mpz_t, mpz_t);
void debug_mp (mpz_t, int);
int
main (int argc, char **argv)
{
mpz_t x2;
mpz_t x, rem;
mpz_t temp, temp2;
mp_size_t x2_size;
int i;
int reps = 1000;
gmp_randstate_ptr rands;
mpz_t bs;
unsigned long size_range;
tests_start ();
TESTS_REPS (reps, argv, argc);
rands = RANDS;
mpz_init (bs);
mpz_init (x2);
mpz_init (x);
mpz_init (rem);
mpz_init (temp);
mpz_init (temp2);
for (i = 0; i < reps; i++)
{
mpz_urandomb (bs, rands, 32);
size_range = mpz_get_ui (bs) % 17 + 2; /* 0..262144 bit operands */
mpz_urandomb (bs, rands, size_range);
x2_size = mpz_get_ui (bs);
mpz_rrandomb (x2, rands, x2_size);
/* printf ("%ld\n", SIZ (x2)); */
mpz_sqrt (temp, x2);
MPZ_CHECK_FORMAT (temp);
mpz_sqrtrem (x, rem, x2);
MPZ_CHECK_FORMAT (x);
MPZ_CHECK_FORMAT (rem);
/* Are results different? */
if (mpz_cmp (temp, x) != 0)
dump_abort (x2, x, rem);
mpz_mul (temp, x, x);
/* Is square of result > argument? */
if (mpz_cmp (temp, x2) > 0)
dump_abort (x2, x, rem);
mpz_add_ui (temp2, x, 1);
mpz_mul (temp2, temp2, temp2);
/* Is square of (result + 1) <= argument? */
if (mpz_cmp (temp2, x2) <= 0)
dump_abort (x2, x, rem);
mpz_add (temp2, temp, rem);
/* Is the remainder wrong? */
if (mpz_cmp (x2, temp2) != 0)
dump_abort (x2, x, rem);
}
mpz_clear (bs);
mpz_clear (x2);
mpz_clear (x);
mpz_clear (rem);
mpz_clear (temp);
mpz_clear (temp2);
tests_end ();
exit (0);
}
void
dump_abort (mpz_t x2, mpz_t x, mpz_t rem)
{
fprintf (stderr, "ERROR\n");
fprintf (stderr, "x2 = "); debug_mp (x2, -16);
fprintf (stderr, "x = "); debug_mp (x, -16);
fprintf (stderr, "remainder = "); debug_mp (rem, -16);
abort();
}
void
debug_mp (mpz_t x, int base)
{
mpz_out_str (stderr, base, x); fputc ('\n', stderr);
}
|
