t-lucnum_ui.c
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上传日期:2022-08-06
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- /* Test mpz_lucnum_ui and mpz_lucnum2_ui.
- Copyright 2001 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"
- /* Usage: t-lucnum_ui [n]
- Test up to L[n], or if n is omitted then the default limit below. A
- literal "x" for the limit means continue forever, this being meant only
- for development. */
- void
- check_sequence (int argc, char *argv[])
- {
- unsigned long n;
- unsigned long limit = 100 * GMP_LIMB_BITS;
- mpz_t want_ln, want_ln1, got_ln, got_ln1;
- if (argc > 1 && argv[1][0] == 'x')
- limit = ULONG_MAX;
- else if (argc > 1)
- limit = atoi (argv[1]);
- /* start at n==0 */
- mpz_init_set_si (want_ln1, -1); /* L[-1] */
- mpz_init_set_ui (want_ln, 2); /* L[0] */
- mpz_init (got_ln);
- mpz_init (got_ln1);
- for (n = 0; n < limit; n++)
- {
- mpz_lucnum2_ui (got_ln, got_ln1, n);
- MPZ_CHECK_FORMAT (got_ln);
- MPZ_CHECK_FORMAT (got_ln1);
- if (mpz_cmp (got_ln, want_ln) != 0 || mpz_cmp (got_ln1, want_ln1) != 0)
- {
- printf ("mpz_lucnum2_ui(%lu) wrongn", n);
- mpz_trace ("want ln ", want_ln);
- mpz_trace ("got ln ", got_ln);
- mpz_trace ("want ln1", want_ln1);
- mpz_trace ("got ln1", got_ln1);
- abort ();
- }
- mpz_lucnum_ui (got_ln, n);
- MPZ_CHECK_FORMAT (got_ln);
- if (mpz_cmp (got_ln, want_ln) != 0)
- {
- printf ("mpz_lucnum_ui(%lu) wrongn", n);
- mpz_trace ("want ln", want_ln);
- mpz_trace ("got ln", got_ln);
- abort ();
- }
- mpz_add (want_ln1, want_ln1, want_ln); /* L[n+1] = L[n] + L[n-1] */
- mpz_swap (want_ln1, want_ln);
- }
- mpz_clear (want_ln);
- mpz_clear (want_ln1);
- mpz_clear (got_ln);
- mpz_clear (got_ln1);
- }
- int
- main (int argc, char *argv[])
- {
- tests_start ();
- mp_trace_base = -16;
- check_sequence (argc, argv);
- tests_end ();
- exit (0);
- }