--- /dev/null
+/* 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 * BITS_PER_MP_LIMB;
+ 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) wrong\n", 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) wrong\n", 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);
+}