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| author | Geogaddi\David <d.m.ronan@qmul.ac.uk> |
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| date | Tue, 17 May 2016 18:50:19 +0100 |
| parents | 636c989477e7 |
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| 1 <html lang="en"> | |
| 2 <head> | |
| 3 <title>Wisdom Utilities - FFTW 3.2.1</title> | |
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| 5 <meta name="description" content="FFTW 3.2.1"> | |
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| 8 <link rel="up" href="Wisdom.html#Wisdom" title="Wisdom"> | |
| 9 <link rel="prev" href="Forgetting-Wisdom.html#Forgetting-Wisdom" title="Forgetting Wisdom"> | |
| 10 <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> | |
| 11 <!-- | |
| 12 This manual is for FFTW | |
| 13 (version 3.2.1, 5 February 2009). | |
| 14 | |
| 15 Copyright (C) 2003 Matteo Frigo. | |
| 16 | |
| 17 Copyright (C) 2003 Massachusetts Institute of Technology. | |
| 18 | |
| 19 Permission is granted to make and distribute verbatim copies of | |
| 20 this manual provided the copyright notice and this permission | |
| 21 notice are preserved on all copies. | |
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| 24 this manual under the conditions for verbatim copying, provided | |
| 25 that the entire resulting derived work is distributed under the | |
| 26 terms of a permission notice identical to this one. | |
| 27 | |
| 28 Permission is granted to copy and distribute translations of this | |
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| 45 </head> | |
| 46 <body> | |
| 47 <div class="node"> | |
| 48 <p> | |
| 49 <a name="Wisdom-Utilities"></a> | |
| 50 Previous: <a rel="previous" accesskey="p" href="Forgetting-Wisdom.html#Forgetting-Wisdom">Forgetting Wisdom</a>, | |
| 51 Up: <a rel="up" accesskey="u" href="Wisdom.html#Wisdom">Wisdom</a> | |
| 52 <hr> | |
| 53 </div> | |
| 54 | |
| 55 <h4 class="subsection">4.7.4 Wisdom Utilities</h4> | |
| 56 | |
| 57 <p>FFTW includes two standalone utility programs that deal with wisdom. We | |
| 58 merely summarize them here, since they come with their own <code>man</code> | |
| 59 pages for Unix and GNU systems (with HTML versions on our web site). | |
| 60 | |
| 61 <p>The first program is <code>fftw-wisdom</code> (or <code>fftwf-wisdom</code> in | |
| 62 single precision, etcetera), which can be used to create a wisdom file | |
| 63 containing plans for any of the transform sizes and types supported by | |
| 64 FFTW. It is preferable to create wisdom directly from your executable | |
| 65 (see <a href="Caveats-in-Using-Wisdom.html#Caveats-in-Using-Wisdom">Caveats in Using Wisdom</a>), but this program is useful for | |
| 66 creating global wisdom files for <code>fftw_import_system_wisdom</code>. | |
| 67 <a name="index-fftw_002dwisdom-utility-279"></a> | |
| 68 The second program is <code>fftw-wisdom-to-conf</code>, which takes a wisdom | |
| 69 file as input and produces a <dfn>configuration routine</dfn> as output. The | |
| 70 latter is a C subroutine that you can compile and link into your | |
| 71 program, replacing a routine of the same name in the FFTW library, that | |
| 72 determines which parts of FFTW are callable by your program. | |
| 73 <code>fftw-wisdom-to-conf</code> produces a configuration routine that links | |
| 74 to only those parts of FFTW needed by the saved plans in the wisdom, | |
| 75 greatly reducing the size of statically linked executables (which should | |
| 76 only attempt to create plans corresponding to those in the wisdom, | |
| 77 however). | |
| 78 <a name="index-fftw_002dwisdom_002dto_002dconf-utility-280"></a><a name="index-configuration-routines-281"></a> | |
| 79 <!-- --> | |
| 80 | |
| 81 </body></html> | |
| 82 |