kc3-lang/gnulib/tests/test-fabs.h

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• Hash : 7b089321
  Author :
  Date : 2025-01-01T09:24:36
  

  maint: run 'make update-copyright'
  

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• tests/test-fabs.h

• /* Test of fabs*() function family.
     Copyright (C) 2012-2025 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 <https://www.gnu.org/licenses/>.  */
  
  static void
  test_function (void)
  {
    volatile DOUBLE x;
    DOUBLE y;
  
    /* Signed zero.  */
    x = L_(0.0);
    y = FABS (x);
    ASSERT (y == L_(0.0));
    ASSERT (!signbit (y));
  
    x = MINUS_ZERO;
    y = FABS (x);
    ASSERT (y == L_(0.0));
    ASSERT (!signbit (y));
  
    /* Randomized tests.  */
    {
      int i;
  
      for (i = 0; i < SIZEOF (RANDOM); i++)
        {
          x = L_(10.0) * RANDOM[i]; /* 0.0 <= x <= 10.0 */
          ASSERT (FABS (x) == x);
          ASSERT (FABS (- x) == x);
        }
    }
  }
  
  volatile DOUBLE x;
  DOUBLE y;
  

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