kc3-lang/gnulib/tests/test-floorf1.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-floorf1.c

• /* Test of rounding towards negative infinity.
     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 (floorf, float, (float));
  
  #include "isnanf-nolibm.h"
  #include "minus-zero.h"
  #include "infinity.h"
  #include "nan.h"
  #include "macros.h"
  
  /* If IEEE compliance was not requested, the ICC compiler inlines its
     own floorf assembly that turns -0.0f to 0.0f; but that is a correct
     result when IEEE is not enforced.  To avoid spurious failure, we
     have to provide this dummy function in order to outsmart ICC's
     inlining, and call our floorf through a function pointer.  */
  static float
  dummy (float f)
  {
    return 0;
  }
  
  int
  main (int argc, _GL_UNUSED char **argv)
  {
    float (*my_floorf) (float) = argc ? floorf : dummy;
  
    /* Zero.  */
    ASSERT (my_floorf (0.0f) == 0.0f);
    ASSERT (my_floorf (minus_zerof) == 0.0f);
    /* Positive numbers.  */
    ASSERT (my_floorf (0.3f) == 0.0f);
    ASSERT (my_floorf (0.7f) == 0.0f);
    ASSERT (my_floorf (1.0f) == 1.0f);
    ASSERT (my_floorf (1.5f) == 1.0f);
    ASSERT (my_floorf (1.999f) == 1.0f);
    ASSERT (my_floorf (2.0f) == 2.0f);
    ASSERT (my_floorf (65535.99f) == 65535.0f);
    ASSERT (my_floorf (65536.0f) == 65536.0f);
    ASSERT (my_floorf (2.341e31f) == 2.341e31f);
    /* Negative numbers.  */
    ASSERT (my_floorf (-0.3f) == -1.0f);
    ASSERT (my_floorf (-0.7f) == -1.0f);
    ASSERT (my_floorf (-1.0f) == -1.0f);
    ASSERT (my_floorf (-1.001f) == -2.0f);
    ASSERT (my_floorf (-1.5f) == -2.0f);
    ASSERT (my_floorf (-1.999f) == -2.0f);
    ASSERT (my_floorf (-2.0f) == -2.0f);
    ASSERT (my_floorf (-65535.99f) == -65536.0f);
    ASSERT (my_floorf (-65536.0f) == -65536.0f);
    ASSERT (my_floorf (-2.341e31f) == -2.341e31f);
    /* Infinite numbers.  */
    ASSERT (my_floorf (Infinityf ()) == Infinityf ());
    ASSERT (my_floorf (- Infinityf ()) == - Infinityf ());
    /* NaNs.  */
    ASSERT (isnanf (my_floorf (NaNf ())));
  
    return 0;
  }
  

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