module.exports = add

/**
 * Adds two vec4's
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a the first operand
 * @param {vec4} b the second operand
 * @returns {vec4} out
 */
function add (out, a, 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
}