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Faster DFTs than FFTW

From: D. J. Bernstein 
Date: 26 Sep 1998 19:39:57 -0000
Subject: Faster DFTs than FFTW

I'm pleased to announce the availability of djbfft 0.70. This version
supports in-place real4, real8, complex4, and complex8 convolution.

djbfft is much faster than FFTW on the Pentium and Pentium MMX. I have
not yet adapted it to other architectures, so it is only a little bit
faster than FFTW on the Pentium Pro and Pentium II.

See http://pobox.com/~djb/djbfft.html for further information.

   Dan Bernstein, University of Illinois at Chicago

Ooura-kun