Modular_Adder_And_Subtractor

This is the implementation of modular adder/subtractor for arbitrary moduli.
The design is based on the circuit proposed by Thian Fatt Tay and Chip-Hong Chang in a research-paper "A New Unified Modular Adder/Subtractor for Arbitrary Moduli"

Link: https://ieeexplore.ieee.org/document/7168568