copy.js
function copy(out, a) {
  out[0] = a[0]
  out[1] = a[1]
  out[2] = a[2]
  out[3] = a[3]
  return out
}
function copy(out, a) {
  out[0] = a[0]
  out[1] = a[1]
  out[2] = a[2]
  out[3] = a[3]
  return out
}
function copy ( out , a ) { out [ 0 ] = a [ 0 ] out [ 1 ] = a [ 1 ] out [ 2 ] = a [ 2 ] out [ 3 ] = a [ 3 ] return out }
Copy the values from one mat2 to another

@alias mat2.copy
@param {mat2} out the receiving matrix
@param {mat2} a the source matrix
@returns {mat2} out
Copy the values from one mat2 to another