github.com/aergoio/aergo@v1.3.1/libtool/src/gmp-6.1.2/tests/mpz/t-lucnum_ui.c (about)

     1  /* Test mpz_lucnum_ui and mpz_lucnum2_ui.
     2  
     3  Copyright 2001 Free Software Foundation, Inc.
     4  
     5  This file is part of the GNU MP Library test suite.
     6  
     7  The GNU MP Library test suite is free software; you can redistribute it
     8  and/or modify it under the terms of the GNU General Public License as
     9  published by the Free Software Foundation; either version 3 of the License,
    10  or (at your option) any later version.
    11  
    12  The GNU MP Library test suite is distributed in the hope that it will be
    13  useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
    14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
    15  Public License for more details.
    16  
    17  You should have received a copy of the GNU General Public License along with
    18  the GNU MP Library test suite.  If not, see https://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  
    34  void
    35  check_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  
    87  int
    88  main (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  }