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/* Test mpz_add, mpz_add_ui, mpz_cmp, mpz_cmp, mpz_mul, mpz_sqrtrem.
Copyright (C) 1991, 1993 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 General Public License as published by
the Free Software Foundation; either version 2, 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with the GNU MP Library; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <stdio.h>
#include "gmp.h"
#include "gmp-impl.h"
#include "urandom.h"
void debug_mp ();
#ifndef SIZE
#define SIZE 8
#endif
main (argc, argv)
int argc;
char **argv;
{
MP_INT x2;
MP_INT x, rem;
MP_INT temp, temp2;
mp_size x2_size;
int i;
int reps = 100000;
if (argc == 2)
reps = atoi (argv[1]);
mpz_init (&x2);
mpz_init (&x);
mpz_init (&rem);
mpz_init (&temp);
mpz_init (&temp2);
for (i = 0; i < reps; i++)
{
x2_size = urandom () % SIZE;
mpz_random2 (&x2, x2_size);
mpz_sqrtrem (&x, &rem, &x2);
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);
}
exit (0);
}
dump_abort (x2, x, rem)
MP_INT *x2, *x, *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 (x, base)
MP_INT *x;
{
mpz_out_str (stderr, base, x); fputc ('\n', stderr);
}
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