t-lucnum_ui.c revision 1.1.1.1
1/* Test mpz_lucnum_ui and mpz_lucnum2_ui. 2 3Copyright 2001 Free Software Foundation, Inc. 4 5This file is part of the GNU MP Library. 6 7The GNU MP Library is free software; you can redistribute it and/or modify 8it under the terms of the GNU Lesser General Public License as published by 9the Free Software Foundation; either version 3 of the License, or (at your 10option) any later version. 11 12The GNU MP Library is distributed in the hope that it will be useful, but 13WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 14or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 15License for more details. 16 17You should have received a copy of the GNU Lesser General Public License 18along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */ 19 20#include <stdio.h> 21#include <stdlib.h> 22#include "gmp.h" 23#include "gmp-impl.h" 24#include "tests.h" 25 26 27/* Usage: t-lucnum_ui [n] 28 29 Test up to L[n], or if n is omitted then the default limit below. A 30 literal "x" for the limit means continue forever, this being meant only 31 for development. */ 32 33 34void 35check_sequence (int argc, char *argv[]) 36{ 37 unsigned long n; 38 unsigned long limit = 100 * GMP_LIMB_BITS; 39 mpz_t want_ln, want_ln1, got_ln, got_ln1; 40 41 if (argc > 1 && argv[1][0] == 'x') 42 limit = ULONG_MAX; 43 else if (argc > 1) 44 limit = atoi (argv[1]); 45 46 /* start at n==0 */ 47 mpz_init_set_si (want_ln1, -1); /* L[-1] */ 48 mpz_init_set_ui (want_ln, 2); /* L[0] */ 49 mpz_init (got_ln); 50 mpz_init (got_ln1); 51 52 for (n = 0; n < limit; n++) 53 { 54 mpz_lucnum2_ui (got_ln, got_ln1, n); 55 MPZ_CHECK_FORMAT (got_ln); 56 MPZ_CHECK_FORMAT (got_ln1); 57 if (mpz_cmp (got_ln, want_ln) != 0 || mpz_cmp (got_ln1, want_ln1) != 0) 58 { 59 printf ("mpz_lucnum2_ui(%lu) wrong\n", n); 60 mpz_trace ("want ln ", want_ln); 61 mpz_trace ("got ln ", got_ln); 62 mpz_trace ("want ln1", want_ln1); 63 mpz_trace ("got ln1", got_ln1); 64 abort (); 65 } 66 67 mpz_lucnum_ui (got_ln, n); 68 MPZ_CHECK_FORMAT (got_ln); 69 if (mpz_cmp (got_ln, want_ln) != 0) 70 { 71 printf ("mpz_lucnum_ui(%lu) wrong\n", n); 72 mpz_trace ("want ln", want_ln); 73 mpz_trace ("got ln", got_ln); 74 abort (); 75 } 76 77 mpz_add (want_ln1, want_ln1, want_ln); /* L[n+1] = L[n] + L[n-1] */ 78 mpz_swap (want_ln1, want_ln); 79 } 80 81 mpz_clear (want_ln); 82 mpz_clear (want_ln1); 83 mpz_clear (got_ln); 84 mpz_clear (got_ln1); 85} 86 87int 88main (int argc, char *argv[]) 89{ 90 tests_start (); 91 mp_trace_base = -16; 92 93 check_sequence (argc, argv); 94 95 tests_end (); 96 exit (0); 97} 98