Method sample

FHE/DiscreteGauss.cpp:20–31

This uses the approximation to a Gaussian via * binomial distribution * * This procedure consumes 2*NewHopeB bits * */

 *
 */
int DiscreteGauss::sample(PRNG &G, int stretch) const
{
  int s= 0;
  // stretch refers to the standard deviation
  int B = NewHopeB * stretch * stretch;
  for (int i = 0; i < B; i++)
    {
      s += G.get_bit();
      s -= G.get_bit();
    }
  return s;
}