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Bug 1537 - Using the same FFT object with real and complex input fails when using FFTW
Summary: Using the same FFT object with real and complex input fails when using FFTW
Status: NEW
Alias: None
Product: Eigen
Classification: Unclassified
Component: Unsupported modules (show other bugs)
Version: 3.3 (current stable)
Hardware: All All
: Normal Wrong Result
Assignee: Nobody
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-04-06 14:54 UTC by Christoph Hertzberg
Modified: 2019-12-04 17:36 UTC (History)
3 users (show)



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Description Christoph Hertzberg 2018-04-06 14:54:13 UTC
Someone found a bug in the implementation of FFT when FFTW is activated:
https://stackoverflow.com/questions/49676830/eigen-fft-library

Looking at the implementation, a `fftw_plan` object is created for a real->complex FFT and then reused for a complex->complex FFT.
A possible fix would be to encode whether the src is real or complex as well, when getting the plan object.
Comment 1 Nobody 2019-12-04 17:36:21 UTC
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