[Libre-soc-dev] [RFC] REMAP, SHAPE, complex (full) FFT

Luke Kenneth Casson Leighton lkcl at lkcl.net
Sun Jul 18 22:57:53 BST 2021

i've moved on to DCT now, not the version that uses FFT followed by
extraction of real coefficients.

most DCT algorithms unfortunately are either expressed inline as a
massive batch of unintelligible hand-created MULADDs, or as assembler,
or as recursive algorithms.

i found *one* iterative butterfly implementation in c++ and it
completely failed to work.

currently struggling with converting a recursive implementation to iterative.

i could really do with some assistance.


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