[feature request] more 2-channels support because of complex numbers

I came accross the nppiWarp limitation to 1, 3, and 4 channels.
My use case involves 2 channels as a representation of complex numbers.

First request : could nppiWarp be extended to 2 channels ?
More generally, there are certainly more basic functions that could be extended to 2 channels (only relevant if interpreting it as 1-channel of 2 x width does not match)