How can I use Keil to compute exponential function? is use #include <stdlib.h>? thank you sir.
I wonder how the capability of an 8051 compares to the computing facilities available to Cooley & Tukey at the time of their 1965 paper...? That's actually quite irrelevant. Even if, as I would guess, a modern-day high-end 8051 can outperform anything available to the inventors of the algorithm, using one of those today, when other hardware outperforms them by orders of magnitude, is exactly as wrong as if that weren't the case. Using an 8051 to do an FFT today is about as crazy an idea as using a screwdriver to dig a grave when there's a shovel available.
"That's actually quite irrelevant" I didn't say it was relevant - I just offered it as an interesting thought. I think you can tell from my previous posts in this thread that I very much doubt the applicability of an 8051 to this project...
Thank you very much, I'll ask you when I finish my project. ^_^ pattaraporn