/**
 * @import { Num } from "./num.js"
 */
import { add } from "./add.js";
import { not } from "./not.js";

/**
 * @param { Num } a 
 * @param { Num } b 
 */
export function sub(a, b) {
    b = b.copy();
    not(b);
    add(a, b);
}