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diff src/fftw-3.3.3/doc/html/Advanced-Real_002dto_002dreal-Transforms.html @ 95:89f5e221ed7b

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Add FFTW3
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>Advanced Real-to-real Transforms - 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="Advanced-Interface.html#Advanced-Interface" title="Advanced Interface">
+<link rel="prev" href="Advanced-Real_002ddata-DFTs.html#Advanced-Real_002ddata-DFTs" title="Advanced Real-data DFTs">
+<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
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+     stated in a translation approved by the Free Software Foundation.
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+</head>
+<body>
+<div class="node">
+<a name="Advanced-Real-to-real-Transforms"></a>
+<a name="Advanced-Real_002dto_002dreal-Transforms"></a>
+<p>
+Previous:&nbsp;<a rel="previous" accesskey="p" href="Advanced-Real_002ddata-DFTs.html#Advanced-Real_002ddata-DFTs">Advanced Real-data DFTs</a>,
+Up:&nbsp;<a rel="up" accesskey="u" href="Advanced-Interface.html#Advanced-Interface">Advanced Interface</a>
+<hr>
+</div>
+
+<h4 class="subsection">4.4.3 Advanced Real-to-real Transforms</h4>
+
+<pre class="example">     fftw_plan fftw_plan_many_r2r(int rank, const int *n, int howmany,
+                                  double *in, const int *inembed,
+                                  int istride, int idist,
+                                  double *out, const int *onembed,
+                                  int ostride, int odist,
+                                  const fftw_r2r_kind *kind, unsigned flags);
+</pre>
+   <p><a name="index-fftw_005fplan_005fmany_005fr2r-238"></a>
+Like <code>fftw_plan_many_dft</code>, this functions adds <code>howmany</code>,
+<code>nembed</code>, <code>stride</code>, and <code>dist</code> parameters to the
+<code>fftw_plan_r2r</code> function, but otherwise behave the same as the
+basic interface.  The interpretation of those additional parameters are
+the same as for <code>fftw_plan_many_dft</code>.  (Of course, the
+<code>stride</code> and <code>dist</code> parameters are now in units of
+<code>double</code>, not <code>fftw_complex</code>.)
+
+   <p>Arrays <code>n</code>, <code>inembed</code>, <code>onembed</code>, and <code>kind</code> are not
+used after this function returns.  You can safely free or reuse them.
+
+<!--  -->
+   </body></html>
+