|
cannam@95
|
1 <html lang="en">
|
|
cannam@95
|
2 <head>
|
|
cannam@95
|
3 <title>Advanced Real-to-real Transforms - FFTW 3.3.3</title>
|
|
cannam@95
|
4 <meta http-equiv="Content-Type" content="text/html">
|
|
cannam@95
|
5 <meta name="description" content="FFTW 3.3.3">
|
|
cannam@95
|
6 <meta name="generator" content="makeinfo 4.13">
|
|
cannam@95
|
7 <link title="Top" rel="start" href="index.html#Top">
|
|
cannam@95
|
8 <link rel="up" href="Advanced-Interface.html#Advanced-Interface" title="Advanced Interface">
|
|
cannam@95
|
9 <link rel="prev" href="Advanced-Real_002ddata-DFTs.html#Advanced-Real_002ddata-DFTs" title="Advanced Real-data DFTs">
|
|
cannam@95
|
10 <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
|
|
cannam@95
|
11 <!--
|
|
cannam@95
|
12 This manual is for FFTW
|
|
cannam@95
|
13 (version 3.3.3, 25 November 2012).
|
|
cannam@95
|
14
|
|
cannam@95
|
15 Copyright (C) 2003 Matteo Frigo.
|
|
cannam@95
|
16
|
|
cannam@95
|
17 Copyright (C) 2003 Massachusetts Institute of Technology.
|
|
cannam@95
|
18
|
|
cannam@95
|
19 Permission is granted to make and distribute verbatim copies of
|
|
cannam@95
|
20 this manual provided the copyright notice and this permission
|
|
cannam@95
|
21 notice are preserved on all copies.
|
|
cannam@95
|
22
|
|
cannam@95
|
23 Permission is granted to copy and distribute modified versions of
|
|
cannam@95
|
24 this manual under the conditions for verbatim copying, provided
|
|
cannam@95
|
25 that the entire resulting derived work is distributed under the
|
|
cannam@95
|
26 terms of a permission notice identical to this one.
|
|
cannam@95
|
27
|
|
cannam@95
|
28 Permission is granted to copy and distribute translations of this
|
|
cannam@95
|
29 manual into another language, under the above conditions for
|
|
cannam@95
|
30 modified versions, except that this permission notice may be
|
|
cannam@95
|
31 stated in a translation approved by the Free Software Foundation.
|
|
cannam@95
|
32 -->
|
|
cannam@95
|
33 <meta http-equiv="Content-Style-Type" content="text/css">
|
|
cannam@95
|
34 <style type="text/css"><!--
|
|
cannam@95
|
35 pre.display { font-family:inherit }
|
|
cannam@95
|
36 pre.format { font-family:inherit }
|
|
cannam@95
|
37 pre.smalldisplay { font-family:inherit; font-size:smaller }
|
|
cannam@95
|
38 pre.smallformat { font-family:inherit; font-size:smaller }
|
|
cannam@95
|
39 pre.smallexample { font-size:smaller }
|
|
cannam@95
|
40 pre.smalllisp { font-size:smaller }
|
|
cannam@95
|
41 span.sc { font-variant:small-caps }
|
|
cannam@95
|
42 span.roman { font-family:serif; font-weight:normal; }
|
|
cannam@95
|
43 span.sansserif { font-family:sans-serif; font-weight:normal; }
|
|
cannam@95
|
44 --></style>
|
|
cannam@95
|
45 </head>
|
|
cannam@95
|
46 <body>
|
|
cannam@95
|
47 <div class="node">
|
|
cannam@95
|
48 <a name="Advanced-Real-to-real-Transforms"></a>
|
|
cannam@95
|
49 <a name="Advanced-Real_002dto_002dreal-Transforms"></a>
|
|
cannam@95
|
50 <p>
|
|
cannam@95
|
51 Previous: <a rel="previous" accesskey="p" href="Advanced-Real_002ddata-DFTs.html#Advanced-Real_002ddata-DFTs">Advanced Real-data DFTs</a>,
|
|
cannam@95
|
52 Up: <a rel="up" accesskey="u" href="Advanced-Interface.html#Advanced-Interface">Advanced Interface</a>
|
|
cannam@95
|
53 <hr>
|
|
cannam@95
|
54 </div>
|
|
cannam@95
|
55
|
|
cannam@95
|
56 <h4 class="subsection">4.4.3 Advanced Real-to-real Transforms</h4>
|
|
cannam@95
|
57
|
|
cannam@95
|
58 <pre class="example"> fftw_plan fftw_plan_many_r2r(int rank, const int *n, int howmany,
|
|
cannam@95
|
59 double *in, const int *inembed,
|
|
cannam@95
|
60 int istride, int idist,
|
|
cannam@95
|
61 double *out, const int *onembed,
|
|
cannam@95
|
62 int ostride, int odist,
|
|
cannam@95
|
63 const fftw_r2r_kind *kind, unsigned flags);
|
|
cannam@95
|
64 </pre>
|
|
cannam@95
|
65 <p><a name="index-fftw_005fplan_005fmany_005fr2r-238"></a>
|
|
cannam@95
|
66 Like <code>fftw_plan_many_dft</code>, this functions adds <code>howmany</code>,
|
|
cannam@95
|
67 <code>nembed</code>, <code>stride</code>, and <code>dist</code> parameters to the
|
|
cannam@95
|
68 <code>fftw_plan_r2r</code> function, but otherwise behave the same as the
|
|
cannam@95
|
69 basic interface. The interpretation of those additional parameters are
|
|
cannam@95
|
70 the same as for <code>fftw_plan_many_dft</code>. (Of course, the
|
|
cannam@95
|
71 <code>stride</code> and <code>dist</code> parameters are now in units of
|
|
cannam@95
|
72 <code>double</code>, not <code>fftw_complex</code>.)
|
|
cannam@95
|
73
|
|
cannam@95
|
74 <p>Arrays <code>n</code>, <code>inembed</code>, <code>onembed</code>, and <code>kind</code> are not
|
|
cannam@95
|
75 used after this function returns. You can safely free or reuse them.
|
|
cannam@95
|
76
|
|
cannam@95
|
77 <!-- -->
|
|
cannam@95
|
78 </body></html>
|
|
cannam@95
|
79
|
