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1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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2 <html>
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3 <!-- This manual is for FFTW
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4 (version 3.3.8, 24 May 2018).
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5
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6 Copyright (C) 2003 Matteo Frigo.
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7
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8 Copyright (C) 2003 Massachusetts Institute of Technology.
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9
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10 Permission is granted to make and distribute verbatim copies of this
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11 manual provided the copyright notice and this permission notice are
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12 preserved on all copies.
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13
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14 Permission is granted to copy and distribute modified versions of this
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15 manual under the conditions for verbatim copying, provided that the
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16 entire resulting derived work is distributed under the terms of a
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17 permission notice identical to this one.
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18
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19 Permission is granted to copy and distribute translations of this manual
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20 into another language, under the above conditions for modified versions,
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21 except that this permission notice may be stated in a translation
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22 approved by the Free Software Foundation. -->
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23 <!-- Created by GNU Texinfo 6.3, http://www.gnu.org/software/texinfo/ -->
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24 <head>
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25 <title>FFTW 3.3.8: Basic Interface</title>
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26
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27 <meta name="description" content="FFTW 3.3.8: Basic Interface">
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28 <meta name="keywords" content="FFTW 3.3.8: Basic Interface">
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33 <link href="index.html#Top" rel="start" title="Top">
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34 <link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
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35 <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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36 <link href="FFTW-Reference.html#FFTW-Reference" rel="up" title="FFTW Reference">
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37 <link href="Complex-DFTs.html#Complex-DFTs" rel="next" title="Complex DFTs">
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38 <link href="Using-Plans.html#Using-Plans" rel="prev" title="Using Plans">
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64 -->
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65 </style>
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66
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67
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68 </head>
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69
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70 <body lang="en">
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71 <a name="Basic-Interface"></a>
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72 <div class="header">
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73 <p>
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74 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> [<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>
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75 </div>
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76 <hr>
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77 <a name="Basic-Interface-1"></a>
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78 <h3 class="section">4.3 Basic Interface</h3>
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79 <a name="index-basic-interface-2"></a>
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80
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81 <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>
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82 computes a single transform of contiguous data, the <em>advanced
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83 interface</em> computes transforms of multiple or strided arrays, and the
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84 <em>guru interface</em> supports the most general data layouts,
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85 multiplicities, and strides. This section describes the the basic
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86 interface, which we expect to satisfy the needs of most users.
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87 </p>
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88 <table class="menu" border="0" cellspacing="0">
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89 <tr><td align="left" valign="top">• <a href="Complex-DFTs.html#Complex-DFTs" accesskey="1">Complex DFTs</a>:</td><td> </td><td align="left" valign="top">
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90 </td></tr>
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91 <tr><td align="left" valign="top">• <a href="Planner-Flags.html#Planner-Flags" accesskey="2">Planner Flags</a>:</td><td> </td><td align="left" valign="top">
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92 </td></tr>
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93 <tr><td align="left" valign="top">• <a href="Real_002ddata-DFTs.html#Real_002ddata-DFTs" accesskey="3">Real-data DFTs</a>:</td><td> </td><td align="left" valign="top">
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94 </td></tr>
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95 <tr><td align="left" valign="top">• <a href="Real_002ddata-DFT-Array-Format.html#Real_002ddata-DFT-Array-Format" accesskey="4">Real-data DFT Array Format</a>:</td><td> </td><td align="left" valign="top">
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96 </td></tr>
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97 <tr><td align="left" valign="top">• <a href="Real_002dto_002dReal-Transforms.html#Real_002dto_002dReal-Transforms" accesskey="5">Real-to-Real Transforms</a>:</td><td> </td><td align="left" valign="top">
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98 </td></tr>
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99 <tr><td align="left" valign="top">• <a href="Real_002dto_002dReal-Transform-Kinds.html#Real_002dto_002dReal-Transform-Kinds" accesskey="6">Real-to-Real Transform Kinds</a>:</td><td> </td><td align="left" valign="top">
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100 </td></tr>
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101 </table>
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102
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103 <div class="footnote">
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104 <hr>
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105 <h4 class="footnotes-heading">Footnotes</h4>
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106
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107 <h3><a name="FOOT6" href="#DOCF6">(6)</a></h3>
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108 <p><i>Gallia est
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109 omnis divisa in partes tres</i> (Julius Caesar).</p>
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110 </div>
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111
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112
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113
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114 </body>
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115 </html>
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