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Current fftw source
author Chris Cannam <cannam@all-day-breakfast.com>
date Tue, 18 Oct 2016 13:40:26 +0100
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1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
2 <html>
3 <!-- This manual is for FFTW
4 (version 3.3.5, 30 July 2016).
5
6 Copyright (C) 2003 Matteo Frigo.
7
8 Copyright (C) 2003 Massachusetts Institute of Technology.
9
10 Permission is granted to make and distribute verbatim copies of this
11 manual provided the copyright notice and this permission notice are
12 preserved on all copies.
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14 Permission is granted to copy and distribute modified versions of this
15 manual under the conditions for verbatim copying, provided that the
16 entire resulting derived work is distributed under the terms of a
17 permission notice identical to this one.
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19 Permission is granted to copy and distribute translations of this manual
20 into another language, under the above conditions for modified versions,
21 except that this permission notice may be stated in a translation
22 approved by the Free Software Foundation. -->
23 <!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
24 <head>
25 <title>FFTW 3.3.5: Basic Interface</title>
26
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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="FFTW-Reference.html#FFTW-Reference" rel="up" title="FFTW Reference">
37 <link href="Complex-DFTs.html#Complex-DFTs" rel="next" title="Complex DFTs">
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69 </head>
70
71 <body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
72 <a name="Basic-Interface"></a>
73 <div class="header">
74 <p>
75 Next: <a href="Advanced-Interface.html#Advanced-Interface" accesskey="n" rel="next">Advanced Interface</a>, Previous: <a href="Using-Plans.html#Using-Plans" accesskey="p" rel="prev">Using Plans</a>, Up: <a href="FFTW-Reference.html#FFTW-Reference" accesskey="u" rel="up">FFTW Reference</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>
76 </div>
77 <hr>
78 <a name="Basic-Interface-1"></a>
79 <h3 class="section">4.3 Basic Interface</h3>
80 <a name="index-basic-interface-2"></a>
81
82 <p>Recall that the FFTW API is divided into three parts<a name="DOCF6" href="#FOOT6"><sup>6</sup></a>: the <em>basic interface</em>
83 computes a single transform of contiguous data, the <em>advanced
84 interface</em> computes transforms of multiple or strided arrays, and the
85 <em>guru interface</em> supports the most general data layouts,
86 multiplicities, and strides. This section describes the the basic
87 interface, which we expect to satisfy the needs of most users.
88 </p>
89 <table class="menu" border="0" cellspacing="0">
90 <tr><td align="left" valign="top">&bull; <a href="Complex-DFTs.html#Complex-DFTs" accesskey="1">Complex DFTs</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
91 </td></tr>
92 <tr><td align="left" valign="top">&bull; <a href="Planner-Flags.html#Planner-Flags" accesskey="2">Planner Flags</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
93 </td></tr>
94 <tr><td align="left" valign="top">&bull; <a href="Real_002ddata-DFTs.html#Real_002ddata-DFTs" accesskey="3">Real-data DFTs</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
95 </td></tr>
96 <tr><td align="left" valign="top">&bull; <a href="Real_002ddata-DFT-Array-Format.html#Real_002ddata-DFT-Array-Format" accesskey="4">Real-data DFT Array Format</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
97 </td></tr>
98 <tr><td align="left" valign="top">&bull; <a href="Real_002dto_002dReal-Transforms.html#Real_002dto_002dReal-Transforms" accesskey="5">Real-to-Real Transforms</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
99 </td></tr>
100 <tr><td align="left" valign="top">&bull; <a href="Real_002dto_002dReal-Transform-Kinds.html#Real_002dto_002dReal-Transform-Kinds" accesskey="6">Real-to-Real Transform Kinds</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
101 </td></tr>
102 </table>
103
104 <div class="footnote">
105 <hr>
106 <h4 class="footnotes-heading">Footnotes</h4>
107
108 <h3><a name="FOOT6" href="#DOCF6">(6)</a></h3>
109 <p><i>Gallia est
110 omnis divisa in partes tres</i> (Julius Caesar).</p>
111 </div>
112
113
114
115 </body>
116 </html>