1  /* test mpz_divisible_2exp_p */
       2  
       3  /*
       4  Copyright 2001 Free Software Foundation, Inc.
       5  
       6  This file is part of the GNU MP Library test suite.
       7  
       8  The GNU MP Library test suite is free software; you can redistribute it
       9  and/or modify it under the terms of the GNU General Public License as
      10  published by the Free Software Foundation; either version 3 of the License,
      11  or (at your option) any later version.
      12  
      13  The GNU MP Library test suite is distributed in the hope that it will be
      14  useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
      15  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
      16  Public License for more details.
      17  
      18  You should have received a copy of the GNU General Public License along with
      19  the GNU MP Library test suite.  If not, see https://www.gnu.org/licenses/.  */
      20  
      21  #include <stdio.h>
      22  #include <stdlib.h>
      23  
      24  #include "gmp-impl.h"
      25  #include "tests.h"
      26  
      27  
      28  void
      29  check_one (mpz_srcptr a, unsigned long d, int want)
      30  {
      31    int   got;
      32  
      33    got = (mpz_divisible_2exp_p (a, d) != 0);
      34    if (want != got)
      35      {
      36        printf ("mpz_divisible_2exp_p wrong\n");
      37        printf ("   expected %d got %d\n", want, got);
      38        mpz_trace ("   a", a);
      39        printf    ("   d=%lu\n", d);
      40        mp_trace_base = -16;
      41        mpz_trace ("   a", a);
      42        printf    ("   d=0x%lX\n", d);
      43        abort ();
      44      }
      45  }
      46  
      47  void
      48  check_data (void)
      49  {
      50    static const struct {
      51      const char    *a;
      52      unsigned long d;
      53      int           want;
      54  
      55    } data[] = {
      56  
      57      { "0", 0, 1 },
      58      { "0", 1, 1 },
      59      { "0", 2, 1 },
      60      { "0", 3, 1 },
      61  
      62      { "1", 0, 1 },
      63      { "1", 1, 0 },
      64      { "1", 2, 0 },
      65      { "1", 3, 0 },
      66      { "1", 10000, 0 },
      67  
      68      { "4", 0, 1 },
      69      { "4", 1, 1 },
      70      { "4", 2, 1 },
      71      { "4", 3, 0 },
      72      { "4", 4, 0 },
      73      { "4", 10000, 0 },
      74  
      75      { "0x80000000", 31, 1 },
      76      { "0x80000000", 32, 0 },
      77      { "0x80000000", 64, 0 },
      78  
      79      { "0x100000000", 32, 1 },
      80      { "0x100000000", 33, 0 },
      81      { "0x100000000", 64, 0 },
      82  
      83      { "0x8000000000000000", 63, 1 },
      84      { "0x8000000000000000", 64, 0 },
      85      { "0x8000000000000000", 128, 0 },
      86  
      87      { "0x10000000000000000", 64, 1 },
      88      { "0x10000000000000000", 65, 0 },
      89      { "0x10000000000000000", 128, 0 },
      90      { "0x10000000000000000", 256, 0 },
      91  
      92      { "0x10000000000000000100000000", 32, 1 },
      93      { "0x10000000000000000100000000", 33, 0 },
      94      { "0x10000000000000000100000000", 64, 0 },
      95  
      96      { "0x1000000000000000010000000000000000", 64, 1 },
      97      { "0x1000000000000000010000000000000000", 65, 0 },
      98      { "0x1000000000000000010000000000000000", 128, 0 },
      99      { "0x1000000000000000010000000000000000", 256, 0 },
     100      { "0x1000000000000000010000000000000000", 1024, 0 },
     101  
     102    };
     103  
     104    mpz_t   a, d;
     105    int     i;
     106  
     107    mpz_init (a);
     108    mpz_init (d);
     109  
     110    for (i = 0; i < numberof (data); i++)
     111      {
     112        mpz_set_str_or_abort (a, data[i].a, 0);
     113        check_one (a, data[i].d, data[i].want);
     114  
     115        mpz_neg (a, a);
     116        check_one (a, data[i].d, data[i].want);
     117      }
     118  
     119    mpz_clear (a);
     120    mpz_clear (d);
     121  }
     122  
     123  int
     124  main (int argc, char *argv[])
     125  {
     126    tests_start ();
     127  
     128    check_data ();
     129  
     130    tests_end ();
     131    exit (0);
     132  }