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Optimized Seti@Home apps => Windows => Topic started by: Vyper on 25 Nov 2006, 05:20:23 pm

Title: Curiosity killed the cat.
Post by: Vyper on 25 Nov 2006, 05:20:23 pm

What is this file for and is it even called on AMD64 systems?

amd64fft8g.cpp

I can't see that the code in anyway links to that file..

Who has a idea??

//Vyper

Title: Re: Curiosity killed the cat.
Post by: Josef W. Segur on 25 Nov 2006, 05:49:56 pm

Quote from: Vyper on 25 Nov 2006, 05:20:23 pm

What is this file for and is it even called on AMD64 systems?

amd64fft8g.cpp

I can't see that the code in anyway links to that file..

Who has a idea??

//Vyper

It's part of the Ooura fft coded in SSE, a contribution from a couple of years ago. I think Eric has preserved it in case someone finds it useful.
                                                                       Joe

Title: Re: Curiosity killed the cat.
Post by: BenHer on 25 Nov 2006, 07:34:19 pm

Quite right Joe...also it uses some SSE2 opcodes but nothing AMD specific...perhaps Evandro optimized the sequence of opcodes for speed on AMD vs Intel.