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

     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.h"
    24  #include "gmp-impl.h"
    25  #include "longlong.h"
    26  #include "tests.h"
    27  
    28  void debug_mp (mpz_t, int);
    29  void dump_abort (int, const char *, mpz_t, mpz_t);
    30  
    31  int
    32  main (int argc, char **argv)
    33  {
    34    mpz_t op1, op2, r1, r2;
    35    mp_size_t op1n, op2n;
    36    unsigned long int op2long;
    37    int i;
    38    int reps = 100000;
    39    gmp_randstate_ptr rands;
    40    mpz_t bs;
    41    unsigned long bsi, size_range;
    42  
    43    tests_start ();
    44    rands = RANDS;
    45  
    46    mpz_init (bs);
    47  
    48    if (argc == 2)
    49       reps = atoi (argv[1]);
    50  
    51    mpz_init (op1);
    52    mpz_init (op2);
    53    mpz_init (r1);
    54    mpz_init (r2);
    55  
    56    for (i = 0; i < reps; i++)
    57      {
    58        mpz_urandomb (bs, rands, 32);
    59        size_range = mpz_get_ui (bs) % 10 + 2;
    60  
    61        mpz_urandomb (bs, rands, size_range);
    62        op1n = mpz_get_ui (bs);
    63        mpz_rrandomb (op1, rands, op1n);
    64  
    65        mpz_urandomb (bs, rands, size_range);
    66        op2n = mpz_get_ui (bs);
    67        mpz_rrandomb (op2, rands, op2n);
    68  
    69        mpz_urandomb (bs, rands, 2);
    70        bsi = mpz_get_ui (bs);
    71        if ((bsi & 1) != 0)
    72  	mpz_neg (op1, op1);
    73        if ((bsi & 2) != 0)
    74  	mpz_neg (op2, op2);
    75  
    76        /* printf ("%ld %ld\n", SIZ (multiplier), SIZ (multiplicand)); */
    77  
    78        mpz_add (r1, op1, op2);
    79        mpz_sub (r2, r1, op2);
    80        if (mpz_cmp (r2, op1) != 0)
    81  	dump_abort (i, "mpz_add or mpz_sub incorrect", op1, op2);
    82  
    83        if (mpz_fits_ulong_p (op2))
    84  	{
    85  	  op2long = mpz_get_ui (op2);
    86  	  mpz_add_ui (r1, op1, op2long);
    87  	  mpz_sub_ui (r2, r1, op2long);
    88  	  if (mpz_cmp (r2, op1) != 0)
    89  	    dump_abort (i, "mpz_add_ui or mpz_sub_ui incorrect", op1, op2);
    90  
    91  	  mpz_ui_sub (r1, op2long, op1);
    92  	  mpz_sub_ui (r2, op1, op2long);
    93  	  mpz_neg (r2, r2);
    94  	  if (mpz_cmp (r1, r2) != 0)
    95  	    dump_abort (i, "mpz_add_ui or mpz_ui_sub incorrect", op1, op2);
    96  	}
    97      }
    98  
    99    mpz_clear (bs);
   100    mpz_clear (op1);
   101    mpz_clear (op2);
   102    mpz_clear (r1);
   103    mpz_clear (r2);
   104  
   105    tests_end ();
   106    exit (0);
   107  }
   108  
   109  void
   110  dump_abort (int i, const char *s, mpz_t op1, mpz_t op2)
   111  {
   112    fprintf (stderr, "ERROR: %s in test %d\n", s, i);
   113    fprintf (stderr, "op1 = "); debug_mp (op1, -16);
   114    fprintf (stderr, "op2 = "); debug_mp (op2, -16);
   115    abort();
   116  }
   117  
   118  void
   119  debug_mp (mpz_t x, int base)
   120  {
   121    mpz_out_str (stderr, base, x); fputc ('\n', stderr);
   122  }