Method add

modules/crypt/arith/ec.js:49–52

(a, b)

		return new ECPoint(this.m - p.y, p.x, p.z == 0n, this.m);
	}
	add(a, b) {
		let r = this._add(a, b);
		return new ECPoint(r.x, r.y, r.z == 0n, this.m);
	}
	_add(a, b) @ "xs_ec2_add";
	mul(a, k) {
		let r = this._mul(a, k);