about the fft implementation algorithm

Maratyszcza / NNPACK

Acceleration package for neural networks on multi-core CPUs

BSD 2-Clause "Simplified" License

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about the fft implementation algorithm #78

Closed yhqlower closed 7 years ago

yhqlower commented 7 years ago

hi~, i'm currently reading the code of the FFT part in nnpack. it seems that the ifft algorithm used by nnpack is DIF-IFFT, which is not consistent with what the poster ATIP2015 says. just want to confirm this difference. thanks!

yhqlower commented 7 years ago

@Maratyszcza although FFT and IFFT are independent from each other, i'd still like to make sure i did not mistake this. many thanks for your reply!