t-sqrtrem.c
上传用户:qaz666999
上传日期:2022-08-06
资源大小:2570k
文件大小:3k
- /* Test mpz_add, mpz_add_ui, mpz_cmp, mpz_cmp, mpz_mul, mpz_sqrtrem.
- Copyright 1991, 1993, 1994, 1996, 2000, 2001, 2002 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 Lesser General Public License as published by
- the Free Software Foundation; either version 3 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 Lesser General Public
- License for more details.
- You should have received a copy of the GNU Lesser General Public License
- along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
- #include <stdio.h>
- #include <stdlib.h>
- #include "gmp.h"
- #include "gmp-impl.h"
- #include "tests.h"
- void dump_abort __GMP_PROTO ((mpz_t, mpz_t, mpz_t));
- void debug_mp __GMP_PROTO ((mpz_t, int));
- int
- main (int argc, char **argv)
- {
- mpz_t x2;
- mpz_t x, rem;
- mpz_t temp, temp2;
- mp_size_t x2_size;
- int i;
- int reps = 1000;
- gmp_randstate_ptr rands;
- mpz_t bs;
- unsigned long size_range;
- tests_start ();
- TESTS_REPS (reps, argv, argc);
- rands = RANDS;
- mpz_init (bs);
- mpz_init (x2);
- mpz_init (x);
- mpz_init (rem);
- mpz_init (temp);
- mpz_init (temp2);
- for (i = 0; i < reps; i++)
- {
- mpz_urandomb (bs, rands, 32);
- size_range = mpz_get_ui (bs) % 17 + 2; /* 0..262144 bit operands */
- mpz_urandomb (bs, rands, size_range);
- x2_size = mpz_get_ui (bs);
- mpz_rrandomb (x2, rands, x2_size);
- /* printf ("%ldn", SIZ (x2)); */
- mpz_sqrtrem (x, rem, x2);
- MPZ_CHECK_FORMAT (x);
- MPZ_CHECK_FORMAT (rem);
- 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);
- }
- mpz_clear (bs);
- mpz_clear (x2);
- mpz_clear (x);
- mpz_clear (rem);
- mpz_clear (temp);
- mpz_clear (temp2);
- tests_end ();
- exit (0);
- }
- void
- dump_abort (mpz_t x2, mpz_t x, mpz_t rem)
- {
- fprintf (stderr, "ERRORn");
- 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 (mpz_t x, int base)
- {
- mpz_out_str (stderr, base, x); fputc ('n', stderr);
- }