1  /* Copyright (C) 2003 Free Software Foundation.
       2  
       3     Check that constant folding of mathematical expressions doesn't
       4     break anything.
       5  
       6     Written by Roger Sayle, 24th August 2003.  */
       7  
       8  /* { dg-do run } */
       9  /* { dg-options "-O2 -ffast-math" } */
      10  
      11  void abort(void);
      12  
      13  double foo(double x)
      14  {
      15    return 12.0/(x*3.0);
      16  }
      17  
      18  double bar(double x)
      19  {
      20    return (3.0/x)*4.0;
      21  }
      22  
      23  int main()
      24  {
      25    if (foo(2.0) != 2.0)
      26      abort ();
      27  
      28    if (bar(2.0) != 6.0)
      29      abort ();
      30  
      31    return 0;
      32  }
      33