internal_subtract()

int GF::internal_subtract ( int f, int g ) const

private

Definition at line 349 of file GF.cpp.

{
  if (g == _ZERO) return f;
  if (f == g) return _ZERO;
  int g1 = modulus_add(g, _MINUS_ONE, Q1_);  // f = -g
  return internal_add(f, g1);
}

References _MINUS_ONE, _ZERO, internal_add(), modulus_add(), and Q1_.

Referenced by subtract().