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-impl.h"
      24  #include "tests.h"
      25  
      26  #ifndef SIZE
      27  #define SIZE 16
      28  #endif
      29  
      30  int
      31  main (int argc, char **argv)
      32  {
      33    mp_size_t size;
      34    mp_exp_t exp;
      35    int reps = 20000;
      36    int i;
      37    mpf_t u, v, w, wref;
      38    mp_size_t bprec = 100;
      39    mpf_t rerr, max_rerr, limit_rerr;
      40  
      41    tests_start ();
      42  
      43    if (argc > 1)
      44      {
      45        reps = strtol (argv[1], 0, 0);
      46        if (argc > 2)
      47  	bprec = strtol (argv[2], 0, 0);
      48      }
      49  
      50    mpf_set_default_prec (bprec);
      51  
      52    mpf_init_set_ui (limit_rerr, 1);
      53    mpf_div_2exp (limit_rerr, limit_rerr, bprec);
      54  #if VERBOSE
      55    mpf_dump (limit_rerr);
      56  #endif
      57    mpf_init (rerr);
      58    mpf_init_set_ui (max_rerr, 0);
      59  
      60    mpf_init (u);
      61    mpf_init (v);
      62    mpf_init (w);
      63    mpf_init (wref);
      64    for (i = 0; i < reps; i++)
      65      {
      66        size = urandom () % (2 * SIZE) - SIZE;
      67        exp = urandom () % SIZE;
      68        mpf_random2 (u, size, exp);
      69  
      70        size = urandom () % (2 * SIZE) - SIZE;
      71        exp = urandom () % SIZE;
      72        mpf_random2 (v, size, exp);
      73  
      74        mpf_add (w, u, v);
      75        refmpf_add (wref, u, v);
      76  
      77        mpf_reldiff (rerr, w, wref);
      78        if (mpf_cmp (rerr, max_rerr) > 0)
      79  	{
      80  	  mpf_set (max_rerr, rerr);
      81  #if VERBOSE
      82  	  mpf_dump (max_rerr);
      83  #endif
      84  	  if (mpf_cmp (rerr, limit_rerr) > 0)
      85  	    {
      86  	      printf ("ERROR after %d tests\n", i);
      87  	      printf ("   u = "); mpf_dump (u);
      88  	      printf ("   v = "); mpf_dump (v);
      89  	      printf ("wref = "); mpf_dump (wref);
      90  	      printf ("   w = "); mpf_dump (w);
      91  	      abort ();
      92  	    }
      93  	}
      94      }
      95  
      96    mpf_clear (limit_rerr);
      97    mpf_clear (rerr);
      98    mpf_clear (max_rerr);
      99  
     100    mpf_clear (u);
     101    mpf_clear (v);
     102    mpf_clear (w);
     103    mpf_clear (wref);
     104  
     105    tests_end ();
     106    exit (0);
     107  }