20210515, 20:55  #1 
"Robert Gerbicz"
Oct 2005
Hungary
3×13×41 Posts 
Multiple (prp) test at once?
When you are loading from a precomputed cos/sin table at fft or compute these infly then you could reuse these values. Basically hide/halve this computation cost [or just the cost of load] if you'd compute multiple fft test at once. Ofcourse use "close" N values, so close p values [for Mersenne numbers] to have the same FFT size for the problems.
Say you'd compute cos(d)*a1[i]+sin(d)*b1[i] cos(d)*a2[i]+sin(d)*b2[i] or for more than 2 tests: cos(d)*a3[i]+sin(d)*b3[i] cos(d)*a4[i]+sin(d)*b4[i] etc. Got the idea? 
20210515, 23:47  #2 
If I May
"Chris Halsall"
Sep 2002
Barbados
2·5,431 Posts 

20210517, 12:17  #3  
"Mihai Preda"
Apr 2015
582_{16} Posts 
Quote:


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