I wrote this code in c for fast DCT (type II) of 8 values: https://anotepad.com/note/read/99kdhg
The method works, but is this as fast as other existing algorithms, or are there any faster ways? The goal is to be as fast and efficient as possible (CPU wise)
(first function is ran once to fill the constants array (c) and the 2nd function does the fast dct for 8 values n=input o=output)
Thanks