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Try a double-precision kissfft
author Chris Cannam
date Wed, 07 Sep 2016 10:40:32 +0100
parents 26056e866c29
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Chris@19 3 <title>Installation and Customization - FFTW 3.3.4</title>
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Chris@19 12 This manual is for FFTW
Chris@19 13 (version 3.3.4, 20 September 2013).
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Chris@19 15 Copyright (C) 2003 Matteo Frigo.
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Chris@19 48 <a name="Installation-and-Customization"></a>
Chris@19 49 <p>
Chris@19 50 Next:&nbsp;<a rel="next" accesskey="n" href="Acknowledgments.html#Acknowledgments">Acknowledgments</a>,
Chris@19 51 Previous:&nbsp;<a rel="previous" accesskey="p" href="Upgrading-from-FFTW-version-2.html#Upgrading-from-FFTW-version-2">Upgrading from FFTW version 2</a>,
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Chris@19 55
Chris@19 56 <h2 class="chapter">10 Installation and Customization</h2>
Chris@19 57
Chris@19 58 <p><a name="index-installation-606"></a>
Chris@19 59 This chapter describes the installation and customization of FFTW, the
Chris@19 60 latest version of which may be downloaded from
Chris@19 61 <a href="http://www.fftw.org">the FFTW home page</a>.
Chris@19 62
Chris@19 63 <p>In principle, FFTW should work on any system with an ANSI C compiler
Chris@19 64 (<code>gcc</code> is fine). However, planner time is drastically reduced if
Chris@19 65 FFTW can exploit a hardware cycle counter; FFTW comes with cycle-counter
Chris@19 66 support for all modern general-purpose CPUs, but you may need to add a
Chris@19 67 couple of lines of code if your compiler is not yet supported
Chris@19 68 (see <a href="Cycle-Counters.html#Cycle-Counters">Cycle Counters</a>). (On Unix, there will be a warning at the end
Chris@19 69 of the <code>configure</code> output if no cycle counter is found.)
Chris@19 70 <a name="index-cycle-counter-607"></a><a name="index-compiler-608"></a><a name="index-portability-609"></a>
Chris@19 71
Chris@19 72 <p>Installation of FFTW is simplest if you have a Unix or a GNU system,
Chris@19 73 such as GNU/Linux, and we describe this case in the first section below,
Chris@19 74 including the use of special configuration options to e.g. install
Chris@19 75 different precisions or exploit optimizations for particular
Chris@19 76 architectures (e.g. SIMD). Compilation on non-Unix systems is a more
Chris@19 77 manual process, but we outline the procedure in the second section. It
Chris@19 78 is also likely that pre-compiled binaries will be available for popular
Chris@19 79 systems.
Chris@19 80
Chris@19 81 <p>Finally, we describe how you can customize FFTW for particular needs by
Chris@19 82 generating <em>codelets</em> for fast transforms of sizes not supported
Chris@19 83 efficiently by the standard FFTW distribution.
Chris@19 84 <a name="index-codelet-610"></a>
Chris@19 85
Chris@19 86 <ul class="menu">
Chris@19 87 <li><a accesskey="1" href="Installation-on-Unix.html#Installation-on-Unix">Installation on Unix</a>
Chris@19 88 <li><a accesskey="2" href="Installation-on-non_002dUnix-systems.html#Installation-on-non_002dUnix-systems">Installation on non-Unix systems</a>
Chris@19 89 <li><a accesskey="3" href="Cycle-Counters.html#Cycle-Counters">Cycle Counters</a>
Chris@19 90 <li><a accesskey="4" href="Generating-your-own-code.html#Generating-your-own-code">Generating your own code</a>
Chris@19 91 </ul>
Chris@19 92
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