function clone$3(a) {
    var out = new ARRAY_TYPE(4);
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    out[3] = a[3];
    return out;
  }
Creates a new vec4 initialized with values from an existing vector

@param {ReadonlyVec4} a vector to clone
@returns {vec4} a new 4D vector