1  /* Copyright (C) 2003 Free Software Foundation.
       2  
       3     Check that constant folding of built-in math functions doesn't
       4     break anything and produces the expected results.
       5  
       6     Written by Roger Sayle, 9th April 2003.  */
       7  
       8  /* { dg-do link } */
       9  /* { dg-options "-O2" } */
      10  
      11  extern void link_error(void);
      12  
      13  extern double pow(double,double);
      14  
      15  
      16  int main()
      17  {
      18    if (pow (2.0, 3.0) != 8.0)
      19      link_error ();
      20  
      21    if (pow (2.0, -3.0) != 0.125)
      22      link_error ();
      23  
      24    return 0;
      25  }
      26