function clone$6(a) {
    var out = new ARRAY_TYPE(9);
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    out[3] = a[3];
    out[4] = a[4];
    out[5] = a[5];
    out[6] = a[6];
    out[7] = a[7];
    out[8] = a[8];
    return out;
  }
Creates a new mat3 initialized with values from an existing matrix

@param {ReadonlyMat3} a matrix to clone
@returns {mat3} a new 3x3 matrix