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It includes\ncomplex, real, symmetric, and parallel transforms, and can handle\narbitrary array sizes efficiently.  FFTW is typically faster than\nother publically-available FFT implementations, and is even\ncompetitive with vendor-tuned libraries.  (See our web page\nhttp://fftw.org/ for extensive benchmarks.)  To achieve this\nperformance, FFTW uses novel code-generation and runtime\nself-optimization techniques (along with many other tricks).\n\nThe doc/ directory contains the manual in texinfo, PDF, info, and HTML\nformats.  Frequently asked questions and answers can be found in the\ndoc/FAQ/ directory in ASCII and HTML.\n\nFor a quick introduction to calling FFTW, see the \"Tutorial\" section\nof the manual.\n\nINSTALLATION\n------------\n\nINSTALLATION FROM AN OFFICIAL RELEASE:\n\nPlease read chapter 10 \"Installation and Customization\" of the manual.\nIn short:\n\n     ./configure\n     make\n     make install\n\nINSTALLATION FROM THE GIT REPOSITORY:\n\nFirst, install these programs:\n\n  ocaml, ocamlbuild, autoconf, automake, indent, and libtool.\n\nYou also need the ocaml Num library, which was standard in Ocaml but\nwas removed without warning in OCaml 4.06.0 (3 Nov 2017).  On Fedora\n30, try installing the ocaml-num-devel package.\n\nThen, execute\n\n    sh bootstrap.sh\n    make\n    \nThe bootstrap.sh script runs configure directly, but if you need to\nre-run configure, you must pass the --enable-maintainer-mode flag:\n\n    ./configure --enable-maintainer-mode [OTHER CONFIGURE FLAGS]\n\nAlternatively, you can run\n\n    sh mkdist.sh\n\nwhich will run the entire bootstrapping process and generate\n.tar.gz files similar to those for official releases.\n\nCONTACTS\n--------\n\nFFTW was written by Matteo Frigo and Steven G. Johnson.  You can\ncontact them at fftw@fftw.org.  The latest version of FFTW,\nbenchmarks, links, and other information can be found at the FFTW home\npage (http://www.fftw.org).  You can also sign up to the fftw-announce\nGoogle group to receive (infrequent) updates and information about new\nreleases.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2FFFTW%2Ffftw3","html_url":"https://awesome.ecosyste.ms/projects/github.com%2FFFTW%2Ffftw3","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2FFFTW%2Ffftw3/lists"}