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FFT source codes in C language

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Can anybody share your FFT source code in C or give a relative link?
Thx in advance.
 

there's a ton of freely available source code, this is one of the
better ones... it has radix 4 and radix 8 which can help if you
do hardware.

the file I attach came from :

**broken link removed**

(it's small so I attach here)
 

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You can also try FFTW (available in one of sourceforge pages).
It's the one used in matlab.
 

FaZeng,

search for fxt library under linux. you can find very optimized code of many transforms in it. for example, you have radix 2,4 DIT/DIF FFT, even NTT based FFT...

other transforms: walsh, hadamard, NTT, basic wavelets...

hope it helps

tahiti
 

Is the Chirp-Z transform included in the fxt library in Linux?
 

Thanks you all.
 

sorry, no chirp in fxt lib

tahiti
 

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