JuliaApproximation / JuliaApproximation/GenericFFT.jl
generic_fft along only some dimensions? ret undefined.
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- Julia
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Description
I notice that generic_fft allows me to fft BigFloat, which is great!
I found however that I couldn't do the usual thing with FFTW, e.g.
generic_fft(X,2)
for only DFTing along the rows:
FastTransforms.generic_fft(BigFloat.(randn(20,20))+im*BigFloat.(randn(20,20)),2)
ERROR: UndefVarError: ret not defined
Stacktrace:
[1] generic_fft(x::Matrix{Complex{BigFloat}}, region::Int64)
@ FastTransforms ~/.julia/packages/FastTransforms/spjz2/src/fftBigFloat.jl:35
[2] top-level scope
@ REPL[19]:1
Is it possible?
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Research direction
Start in src/fftBigFloat.jl at the generic_fft method for a matrix and region argument, using the reported generic_fft(X, 2) call to reproduce the UndefVarError. Trace how the regional transform result is assigned and verify that a transform along the requested dimension returns successfully with the expected shape and values.
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Assessment
- Tech stack
- julia
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 45/100