kc3-lang/gnulib/tests/test-fmod-ieee.h

• Show log

  Commit

• Hash : 0a3dca84
  Author :
  Date : 2012-02-27T11:17:27
  

  Tests for module 'fmodf-ieee'.
  
  * modules/fmodf-ieee-tests: New file.
  * tests/test-fmodf-ieee.c: New file.
  * tests/test-fmod-ieee.h: New file.
  

Download

• tests/test-fmod-ieee.h

• /* Test of fmod*() function family.
     Copyright (C) 2012 Free Software Foundation, Inc.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 3 of the License, or
     (at your option) any later version.
  
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  
  static void
  test_function (void)
  {
    /* [MX] shaded specification in POSIX.  */
  
    /* NaN.  */
    ASSERT (ISNAN (FMOD (NAN, L_(2.0))));
    ASSERT (ISNAN (FMOD (NAN, L_(0.0))));
    ASSERT (ISNAN (FMOD (L_(2.0), NAN)));
    ASSERT (ISNAN (FMOD (L_(0.0), NAN)));
    ASSERT (ISNAN (FMOD (NAN, NAN)));
  
    /* y is zero.  */
    ASSERT (ISNAN (FMOD (L_(2.0), L_(0.0))));
    ASSERT (ISNAN (FMOD (L_(2.0), MINUS_ZERO)));
    ASSERT (ISNAN (FMOD (INFINITY, L_(0.0))));
    ASSERT (ISNAN (FMOD (INFINITY, MINUS_ZERO)));
  
    /* x is infinite.  */
    ASSERT (ISNAN (FMOD (INFINITY, L_(2.0))));
    ASSERT (ISNAN (FMOD (INFINITY, - L_(2.0))));
  
    /* x is zero.  */
    {
      DOUBLE z = FMOD (L_(0.0), L_(2.0));
      ASSERT (z == L_(0.0));
      ASSERT (!signbit (z));
    }
    {
      DOUBLE z = FMOD (MINUS_ZERO, L_(2.0));
      ASSERT (z == L_(0.0));
      ASSERT (!!signbit (z) == !!signbit (MINUS_ZERO));
    }
    {
      DOUBLE z = FMOD (L_(0.0), - L_(2.0));
      ASSERT (z == L_(0.0));
      ASSERT (!signbit (z));
    }
    {
      DOUBLE z = FMOD (MINUS_ZERO, - L_(2.0));
      ASSERT (z == L_(0.0));
      ASSERT (!!signbit (z) == !!signbit (MINUS_ZERO));
    }
    {
      DOUBLE z = FMOD (L_(0.0), INFINITY);
      ASSERT (z == L_(0.0));
      ASSERT (!signbit (z));
    }
    {
      DOUBLE z = FMOD (MINUS_ZERO, INFINITY);
      ASSERT (z == L_(0.0));
      ASSERT (!!signbit (z) == !!signbit (MINUS_ZERO));
    }
    {
      DOUBLE z = FMOD (L_(0.0), - INFINITY);
      ASSERT (z == L_(0.0));
      ASSERT (!signbit (z));
    }
    {
      DOUBLE z = FMOD (MINUS_ZERO, - INFINITY);
      ASSERT (z == L_(0.0));
      ASSERT (!!signbit (z) == !!signbit (MINUS_ZERO));
    }
  
    /* y is infinite.  */
    {
      DOUBLE z = FMOD (L_(2.5), INFINITY);
      ASSERT (z == L_(2.5));
    }
    {
      DOUBLE z = FMOD (L_(2.5), - INFINITY);
      ASSERT (z == L_(2.5));
    }
    {
      DOUBLE z = FMOD (- L_(2.5), INFINITY);
      ASSERT (z == - L_(2.5));
    }
    {
      DOUBLE z = FMOD (- L_(2.5), - INFINITY);
      ASSERT (z == - L_(2.5));
    }
  }
  

Download