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65 lines
2.1 KiB
Text
65 lines
2.1 KiB
Text
FFTW is a free collection of fast C routines for computing the
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Discrete Fourier Transform in one or more dimensions. It includes
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complex, real, symmetric, and parallel transforms, and can handle
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arbitrary array sizes efficiently. FFTW is typically faster than
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other publically-available FFT implementations, and is even
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competitive with vendor-tuned libraries. (See our web page
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http://fftw.org/ for extensive benchmarks.) To achieve this
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performance, FFTW uses novel code-generation and runtime
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self-optimization techniques (along with many other tricks).
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The doc/ directory contains the manual in texinfo, PDF, info, and HTML
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formats. Frequently asked questions and answers can be found in the
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doc/FAQ/ directory in ASCII and HTML.
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For a quick introduction to calling FFTW, see the "Tutorial" section
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of the manual.
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INSTALLATION
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------------
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INSTALLATION FROM AN OFFICIAL RELEASE:
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Please read chapter 10 "Installation and Customization" of the manual.
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In short:
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./configure
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make
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make install
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INSTALLATION FROM THE GIT REPOSITORY:
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First, install these programs:
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ocaml, ocamlbuild, autoconf, automake, indent, and libtool.
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You also need the ocaml Num library, which was standard in Ocaml but
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was removed without warning in OCaml 4.06.0 (3 Nov 2017). On Fedora
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30, try installing the ocaml-num-devel package.
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Then, execute
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sh bootstrap.sh
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make
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The bootstrap.sh script runs configure directly, but if you need to
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re-run configure, you must pass the --enable-maintainer-mode flag:
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./configure --enable-maintainer-mode [OTHER CONFIGURE FLAGS]
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Alternatively, you can run
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sh mkdist.sh
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which will run the entire bootstrapping process and generate
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.tar.gz files similar to those for official releases.
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CONTACTS
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--------
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FFTW was written by Matteo Frigo and Steven G. Johnson. You can
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contact them at fftw@fftw.org. The latest version of FFTW,
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benchmarks, links, and other information can be found at the FFTW home
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page (http://www.fftw.org). You can also sign up to the fftw-announce
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Google group to receive (infrequent) updates and information about new
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releases.
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