search for: butterfly4

I did composition of butterfly8 and butterfly16 and I found, that these functions are well decomposed - decomposition doesn't lower computional speed. On the other hand the same can be done with butterfly8 - decomposition to butterfly4 (further decomposition is not possible) but there's no reason to do this. I think little improvement can be done by inlining them. Compiler and processor can do some speed up only in functions, not between them. Speculative execution works better without jumps. Did anybody tested MDCT on pictur...