Function fast_modulo::mod_u128u64

pub fn mod_u128u64(a: u128, m: u64) -> u64

calcurate a % m

use fast_modulo::mod_u128u64;
assert_eq!(mod_u128u64(17, 3), 2);
assert_eq!(mod_u128u64((1 << 127) - 1, (1 << 61) - 1), 31);