/// Compute `(a^2) / R` (mod l) in Montgomery form, where R is the Montgomery modulus 2^260
public UnpackedScalar montgomery_square()
{
return(UnpackedScalar.montgomery_reduce(UnpackedScalar.square_internal(value.Span)));
}
/// Compute `a^2` (mod l)
// XXX we don't expose square() via the Scalar API
public UnpackedScalar square()
{
var aa = UnpackedScalar.montgomery_reduce(UnpackedScalar.square_internal(value.Span));
return(UnpackedScalar.montgomery_reduce(UnpackedScalar.mul_internal(aa.value.Span, Constant.RR.value.Span)));
}