aa9bc17601
BMakefiles and other bits will follow. Requested by: Andrey Chernov Made world by: Chuck Robey
133 lines
2.8 KiB
C
133 lines
2.8 KiB
C
/* Test mpz_gcd, mpz_gcdext, mpz_mul, mpz_tdiv_r, mpz_add, mpz_cmp,
|
|
mpz_cmp_ui, mpz_init_set, mpz_set, mpz_clear.
|
|
|
|
Copyright (C) 1991, 1993, 1994, 1996 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 mpz_refgcd (), debug_mp ();
|
|
|
|
#ifndef SIZE
|
|
#define SIZE 256 /* really needs to be this large to exercise corner cases! */
|
|
#endif
|
|
|
|
main (argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
mpz_t op1, op2;
|
|
mpz_t refgcd, gcd, s, t;
|
|
mpz_t temp1, temp2;
|
|
mp_size_t op1_size, op2_size;
|
|
int i;
|
|
int reps = 1000;
|
|
|
|
if (argc == 2)
|
|
reps = atoi (argv[1]);
|
|
|
|
mpz_init (op1);
|
|
mpz_init (op2);
|
|
mpz_init (refgcd);
|
|
mpz_init (gcd);
|
|
mpz_init (temp1);
|
|
mpz_init (temp2);
|
|
mpz_init (s);
|
|
mpz_init (t);
|
|
|
|
for (i = 0; i < reps; i++)
|
|
{
|
|
op1_size = urandom () % SIZE - SIZE/2;
|
|
op2_size = urandom () % SIZE - SIZE/2;
|
|
|
|
mpz_random2 (op1, op1_size);
|
|
mpz_random2 (op2, op2_size);
|
|
|
|
mpz_refgcd (refgcd, op1, op2);
|
|
|
|
mpz_gcd (gcd, op1, op2);
|
|
if (mpz_cmp (refgcd, gcd))
|
|
dump_abort (op1, op2);
|
|
|
|
mpz_gcdext (gcd, s, t, op1, op2);
|
|
if (mpz_cmp (refgcd, gcd))
|
|
dump_abort (op1, op2);
|
|
|
|
mpz_mul (temp1, s, op1);
|
|
mpz_mul (temp2, t, op2);
|
|
mpz_add (gcd, temp1, temp2);
|
|
if (mpz_cmp (refgcd, gcd))
|
|
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)
|
|
mpz_t op1, op2;
|
|
{
|
|
fprintf (stderr, "ERROR\n");
|
|
fprintf (stderr, "op1 = "); debug_mp (op1, -16);
|
|
fprintf (stderr, "op2 = "); debug_mp (op2, -16);
|
|
abort();
|
|
}
|
|
|
|
void
|
|
debug_mp (x, base)
|
|
mpz_t x;
|
|
{
|
|
mpz_out_str (stderr, base, x); fputc ('\n', stderr);
|
|
}
|