Subversion Repositories openrisc

/* Tail call optimizations would convert func() into the moral equivalent of:

       double acc = 0.0;

       for (int i = 0; i <= n; i++)

         acc += d;

       return acc;

   which mishandles the case where 'd' is -0.  They also initialised 'acc'

   to a zero int rather than a zero double.  */

double func (double d, int n)

{

  if (n == 0)

    return d;

  else

    return d + func (d, n - 1);

}

int main ()

{

  if (__builtin_copysign (1.0, func (0.0 / -5.0, 10)) != -1.0)

    abort ();

  exit (0);

}