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

     1  /*
     2  
     3  Copyright 2012, 2014, 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  #include <string.h>
    24  
    25  #include "testutils.h"
    26  
    27  #define MAXBITS 400
    28  #define COUNT 10000
    29  
    30  #define GMP_LIMB_BITS (sizeof(mp_limb_t) * CHAR_BIT)
    31  #define MAXLIMBS ((MAXBITS + GMP_LIMB_BITS - 1) / GMP_LIMB_BITS)
    32  
    33  void
    34  testmain (int argc, char **argv)
    35  {
    36    unsigned i;
    37    mpz_t a, b, res, res_ui, ref, tz;
    38    mp_limb_t t[2*MAXLIMBS];
    39    mp_size_t an;
    40  
    41    mpz_init (a);
    42    mpz_init (b);
    43    mpz_init (res);
    44    mpz_init (res_ui);
    45    mpz_init (ref);
    46  
    47    for (i = 0; i < COUNT; i++)
    48      {
    49        mini_random_op3 (OP_MUL, MAXBITS, a, b, ref);
    50        mpz_mul (res, a, b);
    51        if (mpz_cmp (res, ref))
    52  	{
    53  	  fprintf (stderr, "mpz_mul failed:\n");
    54  	  dump ("a", a);
    55  	  dump ("b", b);
    56  	  dump ("r", res);
    57  	  dump ("ref", ref);
    58  	  abort ();
    59  	}
    60        if (mpz_size (a) == mpz_size (b))
    61  	{
    62  	  memset (t, 0x55, sizeof(t));
    63  	  an = mpz_size (a);
    64  	  if (an > 0)
    65  	    {
    66  	      mpn_mul_n (t, a->_mp_d, b->_mp_d, an);
    67  
    68  	      mpz_roinit_n (tz, t, 2*an);
    69  	      if (mpz_cmpabs (tz, ref))
    70  		{
    71  		  fprintf (stderr, "mpn_mul_n failed:\n");
    72  		  dump ("a", a);
    73  		  dump ("b", b);
    74  		  dump ("ref", ref);
    75  		  abort ();
    76  		}
    77  	    }
    78  	}
    79        if (mpz_fits_slong_p (b)) {
    80  	mpz_mul_si (res_ui, a, mpz_get_si (b));
    81  	if (mpz_cmp (res_ui, ref))
    82  	  {
    83  	    fprintf (stderr, "mpz_mul_si failed:\n");
    84  	    dump ("a", a);
    85  	    dump ("b", b);
    86  	    dump ("r", res_ui);
    87  	    dump ("ref", ref);
    88  	    abort ();
    89  	  }
    90        }
    91        mini_random_op2 (OP_SQR, MAXBITS, a, ref);
    92        an = mpz_size (a);
    93        if (an > 0)
    94  	{
    95  	  memset (t, 0x33, sizeof(t));
    96  	  mpn_sqr (t, mpz_limbs_read (a), an);
    97  
    98  	  mpz_roinit_n (tz, t, 2*an);
    99  	  if (mpz_cmp (tz, ref))
   100  	    {
   101  	      fprintf (stderr, "mpn (squaring) failed:\n");
   102  	      dump ("a", a);
   103  	      dump ("ref", ref);
   104  	      abort ();
   105  	    }
   106  	}
   107      }
   108    mpz_clear (a);
   109    mpz_clear (b);
   110    mpz_clear (res);
   111    mpz_clear (res_ui);
   112    mpz_clear (ref);
   113  }