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/* Test mpz_add, mpz_add_ui, mpz_cmp, mpz_cmp, mpz_mul, mpz_sqrtrem.
Copyright (C) 1991, 1993, 1994, 1996, 2000 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"
void debug_mp ();
#ifndef SIZE
#define SIZE 100
#endif
main (argc, argv)
int argc;
char **argv;
{
mpz_t x2;
mpz_t x;
mpz_t temp, temp2;
mp_size_t x2_size;
int i;
int reps = 10000;
unsigned long nth;
if (argc == 2)
reps = atoi (argv[1]);
mpz_init (x2);
mpz_init (x);
mpz_init (temp);
mpz_init (temp2);
for (i = 0; i < reps; i++)
{
x2_size = urandom () % SIZE + 1;
mpz_random2 (x2, x2_size);
nth = urandom () % mpz_sizeinbase (x2, 2) + 1;
if ((urandom() & 1) == 0)
{
/* With 50% probability, set x2 just below a perfect power. */
mpz_root (x, x2, nth);
mpz_pow_ui (x2, x, nth);
if (mpz_sgn (x2) != 0)
mpz_sub_ui (x2, x2, 1L);
}
mpz_root (x, x2, nth);
mpz_pow_ui (temp, x, nth);
/* Is power of result > argument? */
if (mpz_cmp (temp, x2) > 0)
{
fprintf (stderr, "ERROR after test %d\n", i);
debug_mp (x2, 10);
debug_mp (x, 10);
fprintf (stderr, "nth: %lu\n", nth);
abort ();
}
if (nth > 1 && mpz_cmp_ui (temp, 1L) > 0 && ! mpz_perfect_power_p (temp))
{
fprintf (stderr, "ERROR in mpz_perfect_power_p after test %d\n", i);
debug_mp (temp, 10);
debug_mp (x, 10);
fprintf (stderr, "nth: %lu\n", nth);
abort ();
}
if (nth > 10000)
continue; /* skip too expensive test */
mpz_add_ui (temp2, x, 1L);
mpz_pow_ui (temp2, temp2, nth);
/* Is square of (result + 1) <= argument? */
if (mpz_cmp (temp2, x2) <= 0)
{
fprintf (stderr, "ERROR after test %d\n", i);
debug_mp (x2, 10);
debug_mp (x, 10);
fprintf (stderr, "nth: %lu\n", nth);
abort ();
}
}
exit (0);
}
void
debug_mp (x, base)
mpz_t x;
{
mpz_out_str (stderr, base, x); fputc ('\n', stderr);
}
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