Module arithmetic 

Basic modular arithmetic helpers.

Functions

mod_add

Computes (a + b) mod modulus and returns the normalized residue.

mod_mul

Computes (a * b) mod modulus and returns the normalized residue.

mod_normalize

Normalizes value into the residue class 0..modulus.

mod_sub

Computes (a - b) mod modulus and returns the normalized residue.