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author Chris Cannam <cannam@all-day-breakfast.com>
date Wed, 20 Mar 2013 15:35:50 +0000
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+<html lang="en">
+<head>
+<title>Wisdom Utilities - FFTW 3.3.3</title>
+<meta http-equiv="Content-Type" content="text/html">
+<meta name="description" content="FFTW 3.3.3">
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+<link title="Top" rel="start" href="index.html#Top">
+<link rel="up" href="Wisdom.html#Wisdom" title="Wisdom">
+<link rel="prev" href="Forgetting-Wisdom.html#Forgetting-Wisdom" title="Forgetting Wisdom">
+<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
+<!--
+This manual is for FFTW
+(version 3.3.3, 25 November 2012).
+
+Copyright (C) 2003 Matteo Frigo.
+
+Copyright (C) 2003 Massachusetts Institute of Technology.
+
+     Permission is granted to make and distribute verbatim copies of
+     this manual provided the copyright notice and this permission
+     notice are preserved on all copies.
+
+     Permission is granted to copy and distribute modified versions of
+     this manual under the conditions for verbatim copying, provided
+     that the entire resulting derived work is distributed under the
+     terms of a permission notice identical to this one.
+
+     Permission is granted to copy and distribute translations of this
+     manual into another language, under the above conditions for
+     modified versions, except that this permission notice may be
+     stated in a translation approved by the Free Software Foundation.
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+</head>
+<body>
+<div class="node">
+<a name="Wisdom-Utilities"></a>
+<p>
+Previous:&nbsp;<a rel="previous" accesskey="p" href="Forgetting-Wisdom.html#Forgetting-Wisdom">Forgetting Wisdom</a>,
+Up:&nbsp;<a rel="up" accesskey="u" href="Wisdom.html#Wisdom">Wisdom</a>
+<hr>
+</div>
+
+<h4 class="subsection">4.7.4 Wisdom Utilities</h4>
+
+<p>FFTW includes two standalone utility programs that deal with wisdom.  We
+merely summarize them here, since they come with their own <code>man</code>
+pages for Unix and GNU systems (with HTML versions on our web site).
+
+   <p>The first program is <code>fftw-wisdom</code> (or <code>fftwf-wisdom</code> in
+single precision, etcetera), which can be used to create a wisdom file
+containing plans for any of the transform sizes and types supported by
+FFTW.  It is preferable to create wisdom directly from your executable
+(see <a href="Caveats-in-Using-Wisdom.html#Caveats-in-Using-Wisdom">Caveats in Using Wisdom</a>), but this program is useful for
+creating global wisdom files for <code>fftw_import_system_wisdom</code>. 
+<a name="index-fftw_002dwisdom-utility-289"></a>
+
+   <p>The second program is <code>fftw-wisdom-to-conf</code>, which takes a wisdom
+file as input and produces a <dfn>configuration routine</dfn> as output.  The
+latter is a C subroutine that you can compile and link into your
+program, replacing a routine of the same name in the FFTW library, that
+determines which parts of FFTW are callable by your program. 
+<code>fftw-wisdom-to-conf</code> produces a configuration routine that links
+to only those parts of FFTW needed by the saved plans in the wisdom,
+greatly reducing the size of statically linked executables (which should
+only attempt to create plans corresponding to those in the wisdom,
+however). 
+<a name="index-fftw_002dwisdom_002dto_002dconf-utility-290"></a><a name="index-configuration-routines-291"></a>
+<!--  -->
+
+   </body></html>
+