A Fast Fourier Transform library
ca665b587a
FFTW needs to measure plan speeds to find an optimal plan. There isn't cycle counter support on ARM by default. This causes FFTW to silently fall back to always running in estimate mode. The CNTVCT_EL0 counter works by default on Linux now, so enable it. There's an FFTW issue, https://github.com/FFTW/fftw3/issues/287, to make this the default, but it has not been acted on. In my tests, this results in a huge speedup of 2x to 3x. Signed-off-by: Trent Piepho <tpiepho@gmail.com> |
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| .gitignore | ||
| fftw.spec | ||
| sources | ||