mul, add, sub, opp, nonzero, from_montgomery, to_montgomery, to_bytes, from_bytes // // m = 0x100000000000000000 (from "2^252 + 27742317777372353535") // // // // NOTE: In addition to the bounds specified above each function, all // // functions synthesized for this Montgomery arithmetic require the // // input to be strictly less than the prime modulus (m), and also // // require the input to be in the unique saturated representation. // // All functions also ensure that these two properties are true...