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

     1  /* Test mpf_add.
     2  
     3  Copyright 1996, 2001 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 "tests.h"
    26  
    27  #ifndef SIZE
    28  #define SIZE 16
    29  #endif
    30  
    31  int
    32  main (int argc, char **argv)
    33  {
    34    mp_size_t size;
    35    mp_exp_t exp;
    36    int reps = 20000;
    37    int i;
    38    mpf_t u, v, w, wref;
    39    mp_size_t bprec = 100;
    40    mpf_t rerr, max_rerr, limit_rerr;
    41  
    42    tests_start ();
    43  
    44    if (argc > 1)
    45      {
    46        reps = strtol (argv[1], 0, 0);
    47        if (argc > 2)
    48  	bprec = strtol (argv[2], 0, 0);
    49      }
    50  
    51    mpf_set_default_prec (bprec);
    52  
    53    mpf_init_set_ui (limit_rerr, 1);
    54    mpf_div_2exp (limit_rerr, limit_rerr, bprec);
    55  #if VERBOSE
    56    mpf_dump (limit_rerr);
    57  #endif
    58    mpf_init (rerr);
    59    mpf_init_set_ui (max_rerr, 0);
    60  
    61    mpf_init (u);
    62    mpf_init (v);
    63    mpf_init (w);
    64    mpf_init (wref);
    65    for (i = 0; i < reps; i++)
    66      {
    67        size = urandom () % (2 * SIZE) - SIZE;
    68        exp = urandom () % SIZE;
    69        mpf_random2 (u, size, exp);
    70  
    71        size = urandom () % (2 * SIZE) - SIZE;
    72        exp = urandom () % SIZE;
    73        mpf_random2 (v, size, exp);
    74  
    75        mpf_add (w, u, v);
    76        refmpf_add (wref, u, v);
    77  
    78        mpf_reldiff (rerr, w, wref);
    79        if (mpf_cmp (rerr, max_rerr) > 0)
    80  	{
    81  	  mpf_set (max_rerr, rerr);
    82  #if VERBOSE
    83  	  mpf_dump (max_rerr);
    84  #endif
    85  	  if (mpf_cmp (rerr, limit_rerr) > 0)
    86  	    {
    87  	      printf ("ERROR after %d tests\n", i);
    88  	      printf ("   u = "); mpf_dump (u);
    89  	      printf ("   v = "); mpf_dump (v);
    90  	      printf ("wref = "); mpf_dump (wref);
    91  	      printf ("   w = "); mpf_dump (w);
    92  	      abort ();
    93  	    }
    94  	}
    95      }
    96  
    97    mpf_clear (limit_rerr);
    98    mpf_clear (rerr);
    99    mpf_clear (max_rerr);
   100  
   101    mpf_clear (u);
   102    mpf_clear (v);
   103    mpf_clear (w);
   104    mpf_clear (wref);
   105  
   106    tests_end ();
   107    exit (0);
   108  }