add function
Adds two mat2's
@param {mat2} out the receiving matrix @param {ReadonlyMat2} a the first operand @param {ReadonlyMat2} b the second operand @returns {mat2} out
Implementation
List<double> add(List<double> out, List<double> a, List<double> b) {
out[0] = a[0] + b[0];
out[1] = a[1] + b[1];
out[2] = a[2] + b[2];
out[3] = a[3] + b[3];
return out;
}