1  /* Test of splitting a double into fraction and mantissa.
       2     Copyright (C) 2007-2021 Free Software Foundation, Inc.
       3  
       4     This program is free software: you can redistribute it and/or modify
       5     it under the terms of the GNU General Public License as published by
       6     the Free Software Foundation; either version 3 of the License, or
       7     (at your option) any later version.
       8  
       9     This program is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12     GNU General Public License for more details.
      13  
      14     You should have received a copy of the GNU General Public License
      15     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      16  
      17  /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
      18  
      19  #include <config.h>
      20  
      21  #include <math.h>
      22  
      23  #include "signature.h"
      24  SIGNATURE_CHECK (frexp, double, (double, int *));
      25  
      26  #include <float.h>
      27  
      28  #include "isnand-nolibm.h"
      29  #include "minus-zero.h"
      30  #include "infinity.h"
      31  #include "nan.h"
      32  #include "macros.h"
      33  
      34  /* Avoid some warnings from "gcc -Wshadow".
      35     This file doesn't use the exp() function.  */
      36  #undef exp
      37  #define exp exponent
      38  
      39  #undef INFINITY
      40  #undef NAN
      41  
      42  #define DOUBLE double
      43  /* The use of 'volatile' guarantees that excess precision bits are dropped
      44     when dealing with denormalized numbers.  It is necessary on x86 systems
      45     where double-floats are not IEEE compliant by default, to avoid that the
      46     results become platform and compiler option dependent.  'volatile' is a
      47     portable alternative to gcc's -ffloat-store option.  */
      48  #define VOLATILE volatile
      49  #define ISNAN isnand
      50  #define INFINITY Infinityd ()
      51  #define NAN NaNd ()
      52  #define L_(literal) literal
      53  #define MINUS_ZERO minus_zerod
      54  #define MAX_EXP DBL_MAX_EXP
      55  #define MIN_EXP DBL_MIN_EXP
      56  #define MIN_NORMAL_EXP DBL_MIN_EXP
      57  #define FREXP frexp
      58  #define RANDOM randomd
      59  #include "test-frexp.h"
      60  
      61  int
      62  main ()
      63  {
      64    test_function ();
      65  
      66    return 0;
      67  }