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Tidy up for ROLI
author Geogaddi\David <d.m.ronan@qmul.ac.uk>
date Tue, 17 May 2016 18:50:19 +0100
parents 636c989477e7
children
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--- a/Lib/fftw-3.2.1/doc/html/.svn/text-base/Guru-Real_002ddata-DFTs.html.svn-base	Wed May 04 11:02:59 2016 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
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-<html lang="en">
-<head>
-<title>Guru Real-data DFTs - FFTW 3.2.1</title>
-<meta http-equiv="Content-Type" content="text/html">
-<meta name="description" content="FFTW 3.2.1">
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-<link rel="up" href="Guru-Interface.html#Guru-Interface" title="Guru Interface">
-<link rel="prev" href="Guru-Complex-DFTs.html#Guru-Complex-DFTs" title="Guru Complex DFTs">
-<link rel="next" href="Guru-Real_002dto_002dreal-Transforms.html#Guru-Real_002dto_002dreal-Transforms" title="Guru Real-to-real Transforms">
-<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
-<!--
-This manual is for FFTW
-(version 3.2.1, 5 February 2009).
-
-Copyright (C) 2003 Matteo Frigo.
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-Copyright (C) 2003 Massachusetts Institute of Technology.
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-</head>
-<body>
-<div class="node">
-<p>
-<a name="Guru-Real-data-DFTs"></a>
-<a name="Guru-Real_002ddata-DFTs"></a>
-Next:&nbsp;<a rel="next" accesskey="n" href="Guru-Real_002dto_002dreal-Transforms.html#Guru-Real_002dto_002dreal-Transforms">Guru Real-to-real Transforms</a>,
-Previous:&nbsp;<a rel="previous" accesskey="p" href="Guru-Complex-DFTs.html#Guru-Complex-DFTs">Guru Complex DFTs</a>,
-Up:&nbsp;<a rel="up" accesskey="u" href="Guru-Interface.html#Guru-Interface">Guru Interface</a>
-<hr>
-</div>
-
-<h4 class="subsection">4.5.4 Guru Real-data DFTs</h4>
-
-<pre class="example">     fftw_plan fftw_plan_guru_dft_r2c(
-          int rank, const fftw_iodim *dims,
-          int howmany_rank, const fftw_iodim *howmany_dims,
-          double *in, fftw_complex *out,
-          unsigned flags);
-     
-     fftw_plan fftw_plan_guru_split_dft_r2c(
-          int rank, const fftw_iodim *dims,
-          int howmany_rank, const fftw_iodim *howmany_dims,
-          double *in, double *ro, double *io,
-          unsigned flags);
-     
-     fftw_plan fftw_plan_guru_dft_c2r(
-          int rank, const fftw_iodim *dims,
-          int howmany_rank, const fftw_iodim *howmany_dims,
-          fftw_complex *in, double *out,
-          unsigned flags);
-     
-     fftw_plan fftw_plan_guru_split_dft_c2r(
-          int rank, const fftw_iodim *dims,
-          int howmany_rank, const fftw_iodim *howmany_dims,
-          double *ri, double *ii, double *out,
-          unsigned flags);
-</pre>
-   <p><a name="index-fftw_005fplan_005fguru_005fdft_005fr2c-243"></a><a name="index-fftw_005fplan_005fguru_005fsplit_005fdft_005fr2c-244"></a><a name="index-fftw_005fplan_005fguru_005fdft_005fc2r-245"></a><a name="index-fftw_005fplan_005fguru_005fsplit_005fdft_005fc2r-246"></a>
-Plan a real-input (r2c) or real-output (c2r), multi-dimensional DFT with
-transform dimensions given by (<code>rank</code>, <code>dims</code>) over a
-multi-dimensional vector (loop) of dimensions (<code>howmany_rank</code>,
-<code>howmany_dims</code>).  <code>dims</code> and <code>howmany_dims</code> should point
-to <code>fftw_iodim</code> arrays of length <code>rank</code> and
-<code>howmany_rank</code>, respectively.  As for the basic and advanced
-interfaces, an r2c transform is <code>FFTW_FORWARD</code> and a c2r transform
-is <code>FFTW_BACKWARD</code>.
-
-   <p>The <em>last</em> dimension of <code>dims</code> is interpreted specially:
-that dimension of the real array has size <code>dims[rank-1].n</code>, but
-that dimension of the complex array has size <code>dims[rank-1].n/2+1</code>
-(division rounded down).  The strides, on the other hand, are taken to
-be exactly as specified.  It is up to the user to specify the strides
-appropriately for the peculiar dimensions of the data, and we do not
-guarantee that the planner will succeed (return non-<code>NULL</code>) for
-any dimensions other than those described in <a href="Real_002ddata-DFT-Array-Format.html#Real_002ddata-DFT-Array-Format">Real-data DFT Array Format</a> and generalized in <a href="Advanced-Real_002ddata-DFTs.html#Advanced-Real_002ddata-DFTs">Advanced Real-data DFTs</a>.  (That is,
-for an in-place transform, each individual dimension should be able to
-operate in place.) 
-<a name="index-in_002dplace-247"></a>
-<code>in</code> and <code>out</code> point to the input and output arrays for r2c
-and c2r transforms, respectively.  For split arrays, <code>ri</code> and
-<code>ii</code> point to the real and imaginary input arrays for a c2r
-transform, and <code>ro</code> and <code>io</code> point to the real and imaginary
-output arrays for an r2c transform.  <code>in</code> and <code>ro</code> or
-<code>ri</code> and <code>out</code> may be the same, indicating an in-place
-transform.   (In-place transforms where <code>in</code> and <code>io</code> or
-<code>ii</code> and <code>out</code> are the same are not currently supported.)
-
-   <p><a name="index-flags-248"></a><code>flags</code> is a bitwise OR (`<samp><span class="samp">|</span></samp>') of zero or more planner flags,
-as defined in <a href="Planner-Flags.html#Planner-Flags">Planner Flags</a>.
-
-   <p>In-place transforms of rank greater than 1 are currently only
-supported for interleaved arrays.  For split arrays, the planner will
-return <code>NULL</code>. 
-<a name="index-in_002dplace-249"></a>
-<!-- =========> -->
-
-   </body></html>
-