kc3-lang/gnulib/tests/test-atan2f.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-atan2f.c

• /* Test of atan2f() function.
     Copyright (C) 2010-2023 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>, 2010-2011.  */
  
  #include <config.h>
  
  #include <math.h>
  
  #include "signature.h"
  SIGNATURE_CHECK (atan2f, float, (float, float));
  
  #include "macros.h"
  
  volatile float x;
  volatile float y;
  float z;
  
  int
  main ()
  {
    /* A particular value in the first quadrant.  */
    x = 0.6f;
    y = 0.8f;
    z = atan2f (y, x);
    ASSERT (z >= 0.92729515f && z <= 0.9272953f);
  
    /* A particular value in the second quadrant.  */
    x = -0.6f;
    y = 0.8f;
    z = atan2f (y, x);
    ASSERT (z >= 2.2142974f && z <= 2.2142975f);
  
    /* A particular value in the third quadrant.  */
    x = -0.6f;
    y = -0.8f;
    z = atan2f (y, x);
    ASSERT (z >= -2.2142975f && z <= -2.2142974f);
  
    /* A particular value in the fourth quadrant.  */
    x = 0.6f;
    y = -0.8f;
    z = atan2f (y, x);
    ASSERT (z >= -0.9272953f && z <= -0.92729515f);
  
    return 0;
  }
  

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