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/* Test mpz_ui_pow_ui, mpz_fdiv_q, mpz_fdiv_q_2exp, mpz_fdiv_r,
mpz_fdiv_r_2exp, and mpz_mul_2exp.
Copyright (C) 1997, 1999, 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 "longlong.h"
#include "urandom.h"
#ifndef SIZE
#define SIZE 8
#endif
main (argc, argv)
int argc;
char **argv;
{
mpz_t x, r1, r2, q1, q2, d, t;
unsigned long int c;
int test;
int ntests = 100000;
if (argc == 2)
ntests = atoi (argv[1]);
mpz_init (x);
mpz_init (q1);
mpz_init (q2);
mpz_init (r1);
mpz_init (r2);
mpz_init (d);
mpz_init (t);
for (test = 1; test <= ntests; test++)
{
mpz_random2 (x, urandom () % (2 * SIZE) - SIZE);
c = urandom () % (3 * SIZE / 2 * BITS_PER_MP_LIMB);
mpz_ui_pow_ui (d, (unsigned long) 2, c);
mpz_fdiv_q (q1, x, d);
mpz_fdiv_q_2exp (q2, x, c);
mpz_fdiv_r (r1, x, d);
mpz_fdiv_r_2exp (r2, x, c);
if (mpz_cmp (q1, q2) != 0 || mpz_cmp (r1, r2) != 0)
abort ();
mpz_mul_2exp (t, q1, c);
mpz_add (t, t, r1);
if (mpz_cmp (t, x) != 0)
abort ();
if (mpz_cmp (r1, d) >= 0)
abort ();
}
exit (0);
}
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