copyReal returns a DoubleRTable representing the real values from each of the elements from the RTable.

copyImaginary returns a DoubleRTable representing the imaginary values from each of the elements from the RTable.

assign puts the complex double with real part re and complex part im into the position indexed by index.

assign puts the complex double with real part val[0] and complex part val[1] into the position indexed by index.

select returns the complex double indexed by index.  The array returned will be of length 2 with the real part stored at index 0 and the imaginary part stored at index 1.

selectReal returns the real part of the complex double indexed by index.

selectImaginary returns the imaginary part of the complex double indexed by index.