1  /* Test mpz_add, mpz_sub, mpz_add_ui, mpz_sub_ui, and mpz_ui_sub.
       2  
       3  Copyright 2002 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  
      23  #include "gmp-impl.h"
      24  #include "longlong.h"
      25  #include "tests.h"
      26  
      27  void debug_mp (mpz_t, int);
      28  void dump_abort (int, const char *, mpz_t, mpz_t);
      29  
      30  int
      31  main (int argc, char **argv)
      32  {
      33    mpz_t op1, op2, r1, r2;
      34    mp_size_t op1n, op2n;
      35    unsigned long int op2long;
      36    int i;
      37    int reps = 100000;
      38    gmp_randstate_ptr rands;
      39    mpz_t bs;
      40    unsigned long bsi, size_range;
      41  
      42    tests_start ();
      43    rands = RANDS;
      44  
      45    mpz_init (bs);
      46  
      47    if (argc == 2)
      48       reps = atoi (argv[1]);
      49  
      50    mpz_init (op1);
      51    mpz_init (op2);
      52    mpz_init (r1);
      53    mpz_init (r2);
      54  
      55    for (i = 0; i < reps; i++)
      56      {
      57        mpz_urandomb (bs, rands, 32);
      58        size_range = mpz_get_ui (bs) % 10 + 2;
      59  
      60        mpz_urandomb (bs, rands, size_range);
      61        op1n = mpz_get_ui (bs);
      62        mpz_rrandomb (op1, rands, op1n);
      63  
      64        mpz_urandomb (bs, rands, size_range);
      65        op2n = mpz_get_ui (bs);
      66        mpz_rrandomb (op2, rands, op2n);
      67  
      68        mpz_urandomb (bs, rands, 2);
      69        bsi = mpz_get_ui (bs);
      70        if ((bsi & 1) != 0)
      71  	mpz_neg (op1, op1);
      72        if ((bsi & 2) != 0)
      73  	mpz_neg (op2, op2);
      74  
      75        /* printf ("%ld %ld\n", SIZ (multiplier), SIZ (multiplicand)); */
      76  
      77        mpz_add (r1, op1, op2);
      78        mpz_sub (r2, r1, op2);
      79        if (mpz_cmp (r2, op1) != 0)
      80  	dump_abort (i, "mpz_add or mpz_sub incorrect", op1, op2);
      81  
      82        if (mpz_fits_ulong_p (op2))
      83  	{
      84  	  op2long = mpz_get_ui (op2);
      85  	  mpz_add_ui (r1, op1, op2long);
      86  	  mpz_sub_ui (r2, r1, op2long);
      87  	  if (mpz_cmp (r2, op1) != 0)
      88  	    dump_abort (i, "mpz_add_ui or mpz_sub_ui incorrect", op1, op2);
      89  
      90  	  mpz_ui_sub (r1, op2long, op1);
      91  	  mpz_sub_ui (r2, op1, op2long);
      92  	  mpz_neg (r2, r2);
      93  	  if (mpz_cmp (r1, r2) != 0)
      94  	    dump_abort (i, "mpz_add_ui or mpz_ui_sub incorrect", op1, op2);
      95  	}
      96      }
      97  
      98    mpz_clear (bs);
      99    mpz_clear (op1);
     100    mpz_clear (op2);
     101    mpz_clear (r1);
     102    mpz_clear (r2);
     103  
     104    tests_end ();
     105    exit (0);
     106  }
     107  
     108  void
     109  dump_abort (int i, const char *s, mpz_t op1, mpz_t op2)
     110  {
     111    fprintf (stderr, "ERROR: %s in test %d\n", s, i);
     112    fprintf (stderr, "op1 = "); debug_mp (op1, -16);
     113    fprintf (stderr, "op2 = "); debug_mp (op2, -16);
     114    abort();
     115  }
     116  
     117  void
     118  debug_mp (mpz_t x, int base)
     119  {
     120    mpz_out_str (stderr, base, x); fputc ('\n', stderr);
     121  }