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Chris@42: <a name="Tutorial-1"></a>
Chris@42: <h2 class="chapter">2 Tutorial</h2>
Chris@42: <table class="menu" border="0" cellspacing="0">
Chris@42: <tr><td align="left" valign="top">• <a href="Complex-One_002dDimensional-DFTs.html#Complex-One_002dDimensional-DFTs" accesskey="1">Complex One-Dimensional DFTs</a>:</td><td> </td><td align="left" valign="top">
Chris@42: </td></tr>
Chris@42: <tr><td align="left" valign="top">• <a href="Complex-Multi_002dDimensional-DFTs.html#Complex-Multi_002dDimensional-DFTs" accesskey="2">Complex Multi-Dimensional DFTs</a>:</td><td> </td><td align="left" valign="top">
Chris@42: </td></tr>
Chris@42: <tr><td align="left" valign="top">• <a href="One_002dDimensional-DFTs-of-Real-Data.html#One_002dDimensional-DFTs-of-Real-Data" accesskey="3">One-Dimensional DFTs of Real Data</a>:</td><td> </td><td align="left" valign="top">
Chris@42: </td></tr>
Chris@42: <tr><td align="left" valign="top">• <a href="Multi_002dDimensional-DFTs-of-Real-Data.html#Multi_002dDimensional-DFTs-of-Real-Data" accesskey="4">Multi-Dimensional DFTs of Real Data</a>:</td><td> </td><td align="left" valign="top">
Chris@42: </td></tr>
Chris@42: <tr><td align="left" valign="top">• <a href="More-DFTs-of-Real-Data.html#More-DFTs-of-Real-Data" accesskey="5">More DFTs of Real Data</a>:</td><td> </td><td align="left" valign="top">
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Chris@42:
Chris@42: <p>This chapter describes the basic usage of FFTW, i.e., how to compute
Chris@42: <a name="index-basic-interface-1"></a>
Chris@42: the Fourier transform of a single array. This chapter tells the
Chris@42: truth, but not the <em>whole</em> truth. Specifically, FFTW implements
Chris@42: additional routines and flags that are not documented here, although
Chris@42: in many cases we try to indicate where added capabilities exist. For
Chris@42: more complete information, see <a href="FFTW-Reference.html#FFTW-Reference">FFTW Reference</a>. (Note that you
Chris@42: need to compile and install FFTW before you can use it in a program.
Chris@42: For the details of the installation, see <a href="Installation-and-Customization.html#Installation-and-Customization">Installation and Customization</a>.)
Chris@42: </p>
Chris@42: <p>We recommend that you read this tutorial in order.<a name="DOCF1" href="#FOOT1"><sup>1</sup></a> At the least, read the first section (see <a href="Complex-One_002dDimensional-DFTs.html#Complex-One_002dDimensional-DFTs">Complex One-Dimensional DFTs</a>) before reading any of the others, even if your
Chris@42: main interest lies in one of the other transform types.
Chris@42: </p>
Chris@42: <p>Users of FFTW version 2 and earlier may also want to read <a href="Upgrading-from-FFTW-version-2.html#Upgrading-from-FFTW-version-2">Upgrading from FFTW version 2</a>.
Chris@42: </p>
Chris@42: <div class="footnote">
Chris@42: <hr>
Chris@42: <h4 class="footnotes-heading">Footnotes</h4>
Chris@42:
Chris@42: <h3><a name="FOOT1" href="#DOCF1">(1)</a></h3>
Chris@42: <p>You can
Chris@42: read the tutorial in bit-reversed order after computing your first
Chris@42: transform.</p>
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