Mercurial > hg > sv-dependency-builds

annotate src/fftw-3.3.8/doc/html/Tutorial.html @ 169:223a55898ab9 tip default

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add null config files
author Chris Cannam <cannam@all-day-breakfast.com>
date Mon, 02 Mar 2020 14:03:47 +0000
parents bd3cc4d1df30
children
rev   line source
cannam@167 1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
cannam@167 2 <html>
cannam@167 3 <!-- This manual is for FFTW
cannam@167 4 (version 3.3.8, 24 May 2018).
cannam@167 5
cannam@167 6 Copyright (C) 2003 Matteo Frigo.
cannam@167 7
cannam@167 8 Copyright (C) 2003 Massachusetts Institute of Technology.
cannam@167 9
cannam@167 10 Permission is granted to make and distribute verbatim copies of this
cannam@167 11 manual provided the copyright notice and this permission notice are
cannam@167 12 preserved on all copies.
cannam@167 13
cannam@167 14 Permission is granted to copy and distribute modified versions of this
cannam@167 15 manual under the conditions for verbatim copying, provided that the
cannam@167 16 entire resulting derived work is distributed under the terms of a
cannam@167 17 permission notice identical to this one.
cannam@167 18
cannam@167 19 Permission is granted to copy and distribute translations of this manual
cannam@167 20 into another language, under the above conditions for modified versions,
cannam@167 21 except that this permission notice may be stated in a translation
cannam@167 22 approved by the Free Software Foundation. -->
cannam@167 23 <!-- Created by GNU Texinfo 6.3, http://www.gnu.org/software/texinfo/ -->
cannam@167 24 <head>
cannam@167 25 <title>FFTW 3.3.8: Tutorial</title>
cannam@167 26
cannam@167 27 <meta name="description" content="FFTW 3.3.8: Tutorial">
cannam@167 28 <meta name="keywords" content="FFTW 3.3.8: Tutorial">
cannam@167 29 <meta name="resource-type" content="document">
cannam@167 30 <meta name="distribution" content="global">
cannam@167 31 <meta name="Generator" content="makeinfo">
cannam@167 32 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
cannam@167 33 <link href="index.html#Top" rel="start" title="Top">
cannam@167 34 <link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
cannam@167 35 <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
cannam@167 36 <link href="index.html#Top" rel="up" title="Top">
cannam@167 37 <link href="Complex-One_002dDimensional-DFTs.html#Complex-One_002dDimensional-DFTs" rel="next" title="Complex One-Dimensional DFTs">
cannam@167 38 <link href="Introduction.html#Introduction" rel="prev" title="Introduction">
cannam@167 39 <style type="text/css">
cannam@167 40 <!--
cannam@167 41 a.summary-letter {text-decoration: none}
cannam@167 42 blockquote.indentedblock {margin-right: 0em}
cannam@167 43 blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
cannam@167 44 blockquote.smallquotation {font-size: smaller}
cannam@167 45 div.display {margin-left: 3.2em}
cannam@167 46 div.example {margin-left: 3.2em}
cannam@167 47 div.lisp {margin-left: 3.2em}
cannam@167 48 div.smalldisplay {margin-left: 3.2em}
cannam@167 49 div.smallexample {margin-left: 3.2em}
cannam@167 50 div.smalllisp {margin-left: 3.2em}
cannam@167 51 kbd {font-style: oblique}
cannam@167 52 pre.display {font-family: inherit}
cannam@167 53 pre.format {font-family: inherit}
cannam@167 54 pre.menu-comment {font-family: serif}
cannam@167 55 pre.menu-preformatted {font-family: serif}
cannam@167 56 pre.smalldisplay {font-family: inherit; font-size: smaller}
cannam@167 57 pre.smallexample {font-size: smaller}
cannam@167 58 pre.smallformat {font-family: inherit; font-size: smaller}
cannam@167 59 pre.smalllisp {font-size: smaller}
cannam@167 60 span.nolinebreak {white-space: nowrap}
cannam@167 61 span.roman {font-family: initial; font-weight: normal}
cannam@167 62 span.sansserif {font-family: sans-serif; font-weight: normal}
cannam@167 63 ul.no-bullet {list-style: none}
cannam@167 64 -->
cannam@167 65 </style>
cannam@167 66
cannam@167 67
cannam@167 68 </head>
cannam@167 69
cannam@167 70 <body lang="en">
cannam@167 71 <a name="Tutorial"></a>
cannam@167 72 <div class="header">
cannam@167 73 <p>
cannam@167 74 Next: <a href="Other-Important-Topics.html#Other-Important-Topics" accesskey="n" rel="next">Other Important Topics</a>, Previous: <a href="Introduction.html#Introduction" accesskey="p" rel="prev">Introduction</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</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>
cannam@167 75 </div>
cannam@167 76 <hr>
cannam@167 77 <a name="Tutorial-1"></a>
cannam@167 78 <h2 class="chapter">2 Tutorial</h2>
cannam@167 79 <table class="menu" border="0" cellspacing="0">
cannam@167 80 <tr><td align="left" valign="top">&bull; <a href="Complex-One_002dDimensional-DFTs.html#Complex-One_002dDimensional-DFTs" accesskey="1">Complex One-Dimensional DFTs</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@167 81 </td></tr>
cannam@167 82 <tr><td align="left" valign="top">&bull; <a href="Complex-Multi_002dDimensional-DFTs.html#Complex-Multi_002dDimensional-DFTs" accesskey="2">Complex Multi-Dimensional DFTs</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@167 83 </td></tr>
cannam@167 84 <tr><td align="left" valign="top">&bull; <a href="One_002dDimensional-DFTs-of-Real-Data.html#One_002dDimensional-DFTs-of-Real-Data" accesskey="3">One-Dimensional DFTs of Real Data</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@167 85 </td></tr>
cannam@167 86 <tr><td align="left" valign="top">&bull; <a href="Multi_002dDimensional-DFTs-of-Real-Data.html#Multi_002dDimensional-DFTs-of-Real-Data" accesskey="4">Multi-Dimensional DFTs of Real Data</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@167 87 </td></tr>
cannam@167 88 <tr><td align="left" valign="top">&bull; <a href="More-DFTs-of-Real-Data.html#More-DFTs-of-Real-Data" accesskey="5">More DFTs of Real Data</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@167 89 </td></tr>
cannam@167 90 </table>
cannam@167 91
cannam@167 92 <p>This chapter describes the basic usage of FFTW, i.e., how to compute
cannam@167 93 <a name="index-basic-interface-1"></a>
cannam@167 94 the Fourier transform of a single array. This chapter tells the
cannam@167 95 truth, but not the <em>whole</em> truth. Specifically, FFTW implements
cannam@167 96 additional routines and flags that are not documented here, although
cannam@167 97 in many cases we try to indicate where added capabilities exist. For
cannam@167 98 more complete information, see <a href="FFTW-Reference.html#FFTW-Reference">FFTW Reference</a>. (Note that you
cannam@167 99 need to compile and install FFTW before you can use it in a program.
cannam@167 100 For the details of the installation, see <a href="Installation-and-Customization.html#Installation-and-Customization">Installation and Customization</a>.)
cannam@167 101 </p>
cannam@167 102 <p>We recommend that you read this tutorial in order.<a name="DOCF1" href="#FOOT1"><sup>1</sup></a> At the least, read the first section (see <a href="Complex-One_002dDimensional-DFTs.html#Complex-One_002dDimensional-DFTs">Complex One-Dimensional DFTs</a>) before reading any of the others, even if your
cannam@167 103 main interest lies in one of the other transform types.
cannam@167 104 </p>
cannam@167 105 <p>Users of FFTW version 2 and earlier may also want to read <a href="Upgrading-from-FFTW-version-2.html#Upgrading-from-FFTW-version-2">Upgrading from FFTW version 2</a>.
cannam@167 106 </p>
cannam@167 107 <div class="footnote">
cannam@167 108 <hr>
cannam@167 109 <h4 class="footnotes-heading">Footnotes</h4>
cannam@167 110
cannam@167 111 <h3><a name="FOOT1" href="#DOCF1">(1)</a></h3>
cannam@167 112 <p>You can
cannam@167 113 read the tutorial in bit-reversed order after computing your first
cannam@167 114 transform.</p>
cannam@167 115 </div>
cannam@167 116
cannam@167 117
cannam@167 118
cannam@167 119 </body>
cannam@167 120 </html>