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

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• Hash : 9b3b16cb
  Author :
  Date : 2011-10-07T11:18:49
  

  Tests for module 'ldexpf'.
  
  * modules/ldexpf-tests: New file.
  * tests/test-ldexpf.c: New file.
  

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• tests/test-ldexpf.c

• /* Test of ldexpf() function.
     Copyright (C) 2010-2011 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/>.  */
  
  /* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
  
  #include <config.h>
  
  #include <math.h>
  
  #include "signature.h"
  SIGNATURE_CHECK (ldexpf, float, (float, int));
  
  #include "macros.h"
  
  volatile float x;
  float y;
  
  int
  main ()
  {
    /* A particular value.  */
    x = 0.6f;
    y = ldexp (x, 0);
    ASSERT (y >= 0.59999999f && y <= 0.60000001f);
  
    x = 0.6f;
    y = ldexp (x, 1);
    ASSERT (y >= 1.1999999f && y <= 1.2000001f);
  
    x = 0.6f;
    y = ldexp (x, -1);
    ASSERT (y >= 0.29999999f && y <= 0.30000001f);
  
    return 0;
  }
  

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