function cross$1(out, u, v, w) {
    var A = v[0] * w[1] - v[1] * w[0],
        B = v[0] * w[2] - v[2] * w[0],
        C = v[0] * w[3] - v[3] * w[0],
        D = v[1] * w[2] - v[2] * w[1],
        E = v[1] * w[3] - v[3] * w[1],
        F = v[2] * w[3] - v[3] * w[2];
    var G = u[0];
    var H = u[1];
    var I = u[2];
    var J = u[3];
    out[0] = H * F - I * E + J * D;
    out[1] = -(G * F) + I * C - J * B;
    out[2] = G * E - H * C + J * A;
    out[3] = -(G * D) + H * B - I * A;
    return out;
  }
Returns the cross-product of three vectors in a 4-dimensional space

@param {ReadonlyVec4} result the receiving vector
@param {ReadonlyVec4} U the first vector
@param {ReadonlyVec4} V the second vector
@param {ReadonlyVec4} W the third vector
@returns {vec4} result