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Add FFTW 3.3.8 source, and a Linux build
author Chris Cannam <cannam@all-day-breakfast.com>
date Tue, 19 Nov 2019 14:52:55 +0000
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1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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3 <!-- This manual is for FFTW
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6 Copyright (C) 2003 Matteo Frigo.
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8 Copyright (C) 2003 Massachusetts Institute of Technology.
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25 <title>FFTW 3.3.8: Wisdom Utilities</title>
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34 <link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
35 <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
36 <link href="Wisdom.html#Wisdom" rel="up" title="Wisdom">
37 <link href="What-FFTW-Really-Computes.html#What-FFTW-Really-Computes" rel="next" title="What FFTW Really Computes">
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71 <a name="Wisdom-Utilities"></a>
72 <div class="header">
73 <p>
74 Previous: <a href="Forgetting-Wisdom.html#Forgetting-Wisdom" accesskey="p" rel="prev">Forgetting Wisdom</a>, Up: <a href="Wisdom.html#Wisdom" accesskey="u" rel="up">Wisdom</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
75 </div>
76 <hr>
77 <a name="Wisdom-Utilities-1"></a>
78 <h4 class="subsection">4.7.4 Wisdom Utilities</h4>
79
80 <p>FFTW includes two standalone utility programs that deal with wisdom. We
81 merely summarize them here, since they come with their own <code>man</code>
82 pages for Unix and GNU systems (with HTML versions on our web site).
83 </p>
84 <p>The first program is <code>fftw-wisdom</code> (or <code>fftwf-wisdom</code> in
85 single precision, etcetera), which can be used to create a wisdom file
86 containing plans for any of the transform sizes and types supported by
87 FFTW. It is preferable to create wisdom directly from your executable
88 (see <a href="Caveats-in-Using-Wisdom.html#Caveats-in-Using-Wisdom">Caveats in Using Wisdom</a>), but this program is useful for
89 creating global wisdom files for <code>fftw_import_system_wisdom</code>.
90 <a name="index-fftw_002dwisdom-utility-1"></a>
91 </p>
92
93 <p>The second program is <code>fftw-wisdom-to-conf</code>, which takes a wisdom
94 file as input and produces a <em>configuration routine</em> as output. The
95 latter is a C subroutine that you can compile and link into your
96 program, replacing a routine of the same name in the FFTW library, that
97 determines which parts of FFTW are callable by your program.
98 <code>fftw-wisdom-to-conf</code> produces a configuration routine that links
99 to only those parts of FFTW needed by the saved plans in the wisdom,
100 greatly reducing the size of statically linked executables (which should
101 only attempt to create plans corresponding to those in the wisdom,
102 however).
103 <a name="index-fftw_002dwisdom_002dto_002dconf-utility"></a>
104 <a name="index-configuration-routines"></a>
105 </p>
106
107
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