t-addsub.c
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上传日期:2022-08-06
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文件大小:3k
- /* Test mpz_add, mpz_sub, mpz_add_ui, mpz_sub_ui, and mpz_ui_sub.
- Copyright 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 "longlong.h"
- #include "tests.h"
- void debug_mp __GMP_PROTO ((mpz_t, int));
- void dump_abort __GMP_PROTO ((int, char *, mpz_t, mpz_t));
- int
- main (int argc, char **argv)
- {
- mpz_t op1, op2, r1, r2;
- mp_size_t op1n, op2n;
- unsigned long int op2long;
- int i;
- int reps = 100000;
- gmp_randstate_ptr rands;
- mpz_t bs;
- unsigned long bsi, size_range;
- tests_start ();
- rands = RANDS;
- mpz_init (bs);
- if (argc == 2)
- reps = atoi (argv[1]);
- mpz_init (op1);
- mpz_init (op2);
- mpz_init (r1);
- mpz_init (r2);
- for (i = 0; i < reps; i++)
- {
- mpz_urandomb (bs, rands, 32);
- size_range = mpz_get_ui (bs) % 10 + 2;
- mpz_urandomb (bs, rands, size_range);
- op1n = mpz_get_ui (bs);
- mpz_rrandomb (op1, rands, op1n);
- mpz_urandomb (bs, rands, size_range);
- op2n = mpz_get_ui (bs);
- mpz_rrandomb (op2, rands, op2n);
- mpz_urandomb (bs, rands, 2);
- bsi = mpz_get_ui (bs);
- if ((bsi & 1) != 0)
- mpz_neg (op1, op1);
- if ((bsi & 2) != 0)
- mpz_neg (op2, op2);
- /* printf ("%ld %ldn", SIZ (multiplier), SIZ (multiplicand)); */
- mpz_add (r1, op1, op2);
- mpz_sub (r2, r1, op2);
- if (mpz_cmp (r2, op1) != 0)
- dump_abort (i, "mpz_add or mpz_sub incorrect", op1, op2);
- if (mpz_fits_ulong_p (op2))
- {
- op2long = mpz_get_ui (op2);
- mpz_add_ui (r1, op1, op2long);
- mpz_sub_ui (r2, r1, op2long);
- if (mpz_cmp (r2, op1) != 0)
- dump_abort (i, "mpz_add_ui or mpz_sub_ui incorrect", op1, op2);
- mpz_ui_sub (r1, op2long, op1);
- mpz_sub_ui (r2, op1, op2long);
- mpz_neg (r2, r2);
- if (mpz_cmp (r1, r2) != 0)
- dump_abort (i, "mpz_add_ui or mpz_ui_sub incorrect", op1, op2);
- }
- }
- mpz_clear (bs);
- mpz_clear (op1);
- mpz_clear (op2);
- mpz_clear (r1);
- mpz_clear (r2);
- tests_end ();
- exit (0);
- }
- void
- dump_abort (int i, char *s, mpz_t op1, mpz_t op2)
- {
- fprintf (stderr, "ERROR: %s in test %dn", s, i);
- fprintf (stderr, "op1 = "); debug_mp (op1, -16);
- fprintf (stderr, "op2 = "); debug_mp (op2, -16);
- abort();
- }
- void
- debug_mp (mpz_t x, int base)
- {
- mpz_out_str (stderr, base, x); fputc ('n', stderr);
- }