Andi Braimllari authored Oct 11, 2021 and David Frank committed Oct 11, 2021

For a complex DataContainer real() and imag() return the real
and imaginary part of it respectively. The return type is a
real valued DataContainer.

Note, similar to the standard library (std::real and std::imag),
non-complex DataContainers are treated as complex with zero
imaginary component.