gcc/testsuite/gcc.dg/builtins-14.c

   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