polysub

ring_lwe::utils

Function polysub 

Source 
pub fn polysub(
    x: &Polynomial<i64>,
    y: &Polynomial<i64>,
    modulus: i64,
    f: &Polynomial<i64>,
) -> Polynomial<i64>
Expand description

Subtract two polynomials

§Arguments:

  • x - polynomial to be subtracted
  • y - polynomial to be subtracted.
  • modulus - coefficient modulus.
  • f - polynomial modulus.

§Returns:

polynomial in Z_modulus[X]/(f)