OpenXM_contrib/gmp/mpz/tests/t-gcd.c - diff

Return to t-gcd.c CVS log

Up to [local] / OpenXM_contrib / gmp / mpz / tests

Diff for /OpenXM_contrib/gmp/mpz/tests/Attic/t-gcd.c between version 1.1.1.1 and 1.1.1.2

version 1.1.1.1, 2000/01/10 15:35:28

version 1.1.1.2, 2000/09/09 14:13:01

Line 1

/* Test mpz_gcd, mpz_gcdext, mpz_mul, mpz_tdiv_r, mpz_add, mpz_cmp,

mpz_cmp_ui, mpz_init_set, mpz_set, mpz_clear.

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

it under the terms of the GNU Lesser General Public License as published by

the Free Software Foundation; either version 2 of the License, or (at your

the Free Software Foundation; either version 2.1 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

or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public

License for more details.

You should have received a copy of the GNU Library General Public License

You should have received a copy of the GNU Lesser 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. */

Line 25 MA 02111-1307, USA. */

#include "gmp-impl.h"

#include "urandom.h"

void mpz_refgcd (), debug_mp ();

void debug_mp ();

#ifndef SIZE

#define SIZE 256 /* really needs to be this large to exercise corner cases! */

#define SIZE 128

#endif

main (argc, argv)

int argc;

char **argv;

{

mpz_t op1, op2;

mpz_t op1, op2, x;

mpz_t refgcd, gcd, s, t;

mpz_t gcd, gcd2, s, t;

mpz_t temp1, temp2;

mp_size_t op1_size, op2_size;

mp_size_t op1_size, op2_size, x_size;

int i;

int reps = 1000;

int reps = 2000;

if (argc == 2)

reps = atoi (argv[1]);

mpz_init (op1);

mpz_init (op2);

mpz_init (refgcd);

mpz_init (x);

mpz_init (gcd);

mpz_init (gcd2);

mpz_init (temp1);

mpz_init (temp2);

mpz_init (s);

Line 58 main (argc, argv)

Line 59 main (argc, argv)

{

op1_size = urandom () % SIZE - SIZE/2;

op2_size = urandom () % SIZE - SIZE/2;

x_size = urandom () % SIZE/2;

mpz_random2 (op1, op1_size);

mpz_random2 (op2, op2_size);

mpz_random2 (x, x_size);

mpz_mul (op1, op1, x);

mpz_mul (op2, op2, x);

mpz_refgcd (refgcd, op1, op2);

mpz_gcd (gcd, op1, op2);

if (mpz_cmp (refgcd, gcd))

/* We know GCD will be at least X, since we multiplied in that factor. */

if (mpz_cmp (gcd, x) < 0 && mpz_sgn (op1) != 0 && mpz_sgn (op2) != 0)

dump_abort (op1, op2);

mpz_gcdext (gcd, s, t, op1, op2);

mpz_gcdext (gcd2, s, t, op1, op2);

if (mpz_cmp (refgcd, gcd))

if (mpz_cmp (gcd, gcd2))

dump_abort (op1, op2);

mpz_gcdext (gcd2, s, NULL, op1, op2);

if (mpz_cmp (gcd, gcd2))

dump_abort (op1, op2);

mpz_mul (temp1, s, op1);

mpz_mul (temp2, t, op2);

mpz_add (gcd, temp1, temp2);

mpz_add (gcd2, temp1, temp2);

if (mpz_cmp (refgcd, gcd))

if (mpz_cmp (gcd, gcd2))

dump_abort (op1, op2);

}

exit (0);

}

void

mpz_refgcd (g, x, y)

mpz_t g;

mpz_t x, y;

{

mpz_t xx, yy;

mpz_init (xx);

mpz_init (yy);

mpz_abs (xx, x);

mpz_abs (yy, y);

for (;;)

{

if (mpz_cmp_ui (yy, 0) == 0)

{

mpz_set (g, xx);

break;

}

mpz_tdiv_r (xx, xx, yy);

if (mpz_cmp_ui (xx, 0) == 0)

{

mpz_set (g, yy);

break;

}

mpz_tdiv_r (yy, yy, xx);

}

mpz_clear (xx);

mpz_clear (yy);

}

dump_abort (op1, op2)

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>