118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
|
/* Test mpz_abs, mpz_add, mpz_cmp, mpz_cmp_ui, mpz_fdiv_qr_ui, mpz_fdiv_q_ui,
|
||
|
|
mpz_fdiv_r_ui, mpz_mul, mpz_mul_ui.
|
||
|
|
|
||
|
|
Copyright (C) 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 debug_mp ();
|
||
|
|
|
||
|
|
#ifndef SIZE
|
||
|
|
#define SIZE 16
|
||
|
|
#endif
|
||
|
|
|
||
|
|
main (argc, argv)
|
||
|
|
int argc;
|
||
|
|
char **argv;
|
||
|
|
{
|
||
|
|
mpz_t dividend;
|
||
|
|
mpz_t quotient, remainder;
|
||
|
|
mpz_t quotient2, remainder2;
|
||
|
|
mpz_t temp;
|
||
|
|
mp_size_t dividend_size;
|
||
|
|
mp_limb_t divisor;
|
||
|
|
int i;
|
||
|
|
int reps = 100000;
|
||
|
|
|
||
|
|
if (argc == 2)
|
||
|
|
reps = atoi (argv[1]);
|
||
|
|
|
||
|
|
mpz_init (dividend);
|
||
|
|
mpz_init (quotient);
|
||
|
|
mpz_init (remainder);
|
||
|
|
mpz_init (quotient2);
|
||
|
|
mpz_init (remainder2);
|
||
|
|
mpz_init (temp);
|
||
|
|
|
||
|
|
for (i = 0; i < reps; i++)
|
||
|
|
{
|
||
|
|
dividend_size = urandom () % SIZE - SIZE/2;
|
||
|
|
mpz_random2 (dividend, dividend_size);
|
||
|
|
|
||
|
|
divisor = urandom ();
|
||
|
|
if (divisor == 0)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
mpz_fdiv_qr_ui (quotient, remainder, dividend, divisor);
|
||
|
|
mpz_fdiv_q_ui (quotient2, dividend, divisor);
|
||
|
|
mpz_fdiv_r_ui (remainder2, dividend, divisor);
|
||
|
|
|
||
|
|
/* First determine that the quotients and remainders computed
|
||
|
|
with different functions are equal. */
|
||
|
|
if (mpz_cmp (quotient, quotient2) != 0)
|
||
|
|
dump_abort (dividend, divisor);
|
||
|
|
if (mpz_cmp (remainder, remainder2) != 0)
|
||
|
|
dump_abort (dividend, divisor);
|
||
|
|
|
||
|
|
/* Check if the sign of the quotient is correct. */
|
||
|
|
if (mpz_cmp_ui (quotient, 0) != 0)
|
||
|
|
if ((mpz_cmp_ui (quotient, 0) < 0)
|
||
|
|
!= (mpz_cmp_ui (dividend, 0) < 0))
|
||
|
|
dump_abort (dividend, divisor);
|
||
|
|
|
||
|
|
/* Check if the remainder has the same sign as the divisor
|
||
|
|
(quotient rounded towards minus infinity). */
|
||
|
|
if (mpz_cmp_ui (remainder, 0) != 0)
|
||
|
|
if (mpz_cmp_ui (remainder, 0) < 0)
|
||
|
|
dump_abort (dividend, divisor);
|
||
|
|
|
||
|
|
mpz_mul_ui (temp, quotient, divisor);
|
||
|
|
mpz_add (temp, temp, remainder);
|
||
|
|
if (mpz_cmp (temp, dividend) != 0)
|
||
|
|
dump_abort (dividend, divisor);
|
||
|
|
|
||
|
|
mpz_abs (remainder, remainder);
|
||
|
|
if (mpz_cmp_ui (remainder, divisor) >= 0)
|
||
|
|
dump_abort (dividend, divisor);
|
||
|
|
}
|
||
|
|
|
||
|
|
exit (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
dump_abort (dividend, divisor)
|
||
|
|
mpz_t dividend;
|
||
|
|
mp_limb_t divisor;
|
||
|
|
{
|
||
|
|
fprintf (stderr, "ERROR\n");
|
||
|
|
fprintf (stderr, "dividend = "); debug_mp (dividend, -16);
|
||
|
|
fprintf (stderr, "divisor = %lX\n", divisor);
|
||
|
|
abort();
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
debug_mp (x, base)
|
||
|
|
mpz_t x;
|
||
|
|
{
|
||
|
|
mpz_out_str (stderr, base, x); fputc ('\n', stderr);
|
||
|
|
}
|