module.exports = multiply /** * Multiplies two mat2's * * @alias mat2.multiply * @param {mat2} out the receiving matrix * @param {mat2} a the first operand * @param {mat2} b the second operand * @returns {mat2} out */ function multiply(out, a, b) { var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3] var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3] out[0] = a0 * b0 + a2 * b1 out[1] = a1 * b0 + a3 * b1 out[2] = a0 * b2 + a2 * b3 out[3] = a1 * b2 + a3 * b3 return out }