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      1 /*
      2 
      3 Copyright 2012, 2013 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 <limits.h>
     21 #include <stdlib.h>
     22 #include <stdio.h>
     23 
     24 #include "testutils.h"
     25 
     26 #define MAXBITS 400
     27 #define COUNT 10000
     28 
     29 void
     30 testlogops (int count)
     31 {
     32   int i;
     33   mpz_t a, b, res, ref;
     34   mp_bitcnt_t c;
     35 
     36   mpz_init (a);
     37   mpz_init (b);
     38   mpz_init (res);
     39   mpz_init (ref);
     40 
     41   for (i = 0; i < count; i++)
     42     {
     43       mini_random_op3 (OP_AND, MAXBITS, a, b, ref);
     44       mpz_and (res, a, b);
     45       if (mpz_cmp (res, ref))
     46 	{
     47 	  fprintf (stderr, "mpz_and failed:\n");
     48 	  dump ("a", a);
     49 	  dump ("b", b);
     50 	  dump ("r", res);
     51 	  dump ("ref", ref);
     52 	  abort ();
     53 	}
     54 
     55       mini_random_op3 (OP_IOR, MAXBITS, a, b, ref);
     56       mpz_ior (res, a, b);
     57       if (mpz_cmp (res, ref))
     58 	{
     59 	  fprintf (stderr, "mpz_ior failed:\n");
     60 	  dump ("a", a);
     61 	  dump ("b", b);
     62 	  dump ("r", res);
     63 	  dump ("ref", ref);
     64 	  abort ();
     65 	}
     66 
     67       mini_random_op3 (OP_XOR, MAXBITS, a, b, ref);
     68       mpz_xor (res, a, b);
     69       if (mpz_cmp (res, ref))
     70 	{
     71 	  fprintf (stderr, "mpz_xor failed:\n");
     72 	  dump ("a", a);
     73 	  dump ("b", b);
     74 	  dump ("r", res);
     75 	  dump ("ref", ref);
     76 	  abort ();
     77 	}
     78 
     79       if (i % 8) {
     80 	c = 0;
     81 	mpz_mul_2exp (res, res, i % 8);
     82       } else if (mpz_sgn (res) >= 0) {
     83 	c = mpz_odd_p (res) != 0;
     84 	mpz_tdiv_q_2exp (res, res, 1);
     85       } else {
     86 	c = (~ (mp_bitcnt_t) 0) - 3;
     87 	mpz_set_ui (res, 11 << ((i >> 3)%4)); /* set 3 bits */
     88       }
     89 
     90       if (mpz_popcount (res) + c != mpz_hamdist (a, b))
     91 	{
     92 	  fprintf (stderr, "mpz_popcount(r) + %lu and mpz_hamdist(a,b) differ:\n", c);
     93 	  dump ("a", a);
     94 	  dump ("b", b);
     95 	  dump ("r", res);
     96 	  fprintf (stderr, "mpz_popcount(r) = %lu:\n", mpz_popcount (res));
     97 	  fprintf (stderr, "mpz_hamdist(a,b) = %lu:\n", mpz_hamdist (a, b));
     98 	  abort ();
     99 	}
    100     }
    101   mpz_clear (a);
    102   mpz_clear (b);
    103   mpz_clear (res);
    104   mpz_clear (ref);
    105 }
    106 
    107 void
    108 testmain (int argc, char **argv)
    109 {
    110   testhalves (COUNT*2/3, testlogops);
    111   testlogops (COUNT/3);
    112 }
    113