gcc/testsuite/gcc.dg/builtins-52.c

   1 /* { dg-do link } */
   2 /* { dg-options "-ffast-math" } */
   3
   4 extern void link_error(void);
   5
   6 void test(double x, int n)
   7 {
   8   if (__builtin_powi(x,-1.0) != 1.0/x)
   9     link_error ();
  10   if (__builtin_powi(x,0.0) != 1.0)
  11     link_error ();
  12   if (__builtin_powi(x,1.0) != x)
  13     link_error ();
  14   if (__builtin_powi(1.0,n) != 1.0)
  15     link_error ();
  16 }
  17
  18 int main()
  19 {
  20   test(7.3, 2);
  21   return 0;
  22 }
  23