kc3-lang/gnulib/tests/test-trunc1.c

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• Hash : 32a72f45
  Author :
  Date : 2023-01-01T01:14:21
  

  maint: run 'make update-copyright'
  

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• tests/test-trunc1.c

• /* Test of rounding towards zero.
     Copyright (C) 2007-2023 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/>.  */
  
  /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
  
  #include <config.h>
  
  #include <math.h>
  
  #include "signature.h"
  SIGNATURE_CHECK (trunc, double, (double));
  
  #include "isnand-nolibm.h"
  #include "minus-zero.h"
  #include "infinity.h"
  #include "nan.h"
  #include "macros.h"
  
  int
  main ()
  {
    /* Zero.  */
    ASSERT (trunc (0.0) == 0.0);
    ASSERT (trunc (minus_zerod) == 0.0);
    /* Positive numbers.  */
    ASSERT (trunc (0.3) == 0.0);
    ASSERT (trunc (0.7) == 0.0);
    ASSERT (trunc (1.0) == 1.0);
    ASSERT (trunc (1.5) == 1.0);
    ASSERT (trunc (1.999) == 1.0);
    ASSERT (trunc (2.0) == 2.0);
    ASSERT (trunc (65535.999) == 65535.0);
    ASSERT (trunc (65536.0) == 65536.0);
    ASSERT (trunc (2.341e31) == 2.341e31);
    /* Negative numbers.  */
    ASSERT (trunc (-0.3) == 0.0);
    ASSERT (trunc (-0.7) == 0.0);
    ASSERT (trunc (-1.0) == -1.0);
    ASSERT (trunc (-1.5) == -1.0);
    ASSERT (trunc (-1.999) == -1.0);
    ASSERT (trunc (-2.0) == -2.0);
    ASSERT (trunc (-65535.999) == -65535.0);
    ASSERT (trunc (-65536.0) == -65536.0);
    ASSERT (trunc (-2.341e31) == -2.341e31);
    /* Infinite numbers.  */
    ASSERT (trunc (Infinityd ()) == Infinityd ());
    ASSERT (trunc (- Infinityd ()) == - Infinityd ());
    /* NaNs.  */
    ASSERT (isnand (trunc (NaNd ())));
  
    return 0;
  }
  

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