FastICA missing a complex variant?

[waTeim]

This would be useful as described in

E. Bingham and A. Hyvarinen, “A fast fixed-point algorithm for independent components analysis of complex valued signals,” International Journal of Neural Systems, vol. 10, pp. 1–8, Feb. 2000

[cyanescent]

Same for PCA, complex values are not supported, unlike for instance matlab's PCA.