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cannam@95: <h2 class="chapter">2 Tutorial</h2>
cannam@95: 
cannam@95: <ul class="menu">
cannam@95: <li><a accesskey="1" href="Complex-One_002dDimensional-DFTs.html#Complex-One_002dDimensional-DFTs">Complex One-Dimensional DFTs</a>
cannam@95: <li><a accesskey="2" href="Complex-Multi_002dDimensional-DFTs.html#Complex-Multi_002dDimensional-DFTs">Complex Multi-Dimensional DFTs</a>
cannam@95: <li><a accesskey="3" href="One_002dDimensional-DFTs-of-Real-Data.html#One_002dDimensional-DFTs-of-Real-Data">One-Dimensional DFTs of Real Data</a>
cannam@95: <li><a accesskey="4" href="Multi_002dDimensional-DFTs-of-Real-Data.html#Multi_002dDimensional-DFTs-of-Real-Data">Multi-Dimensional DFTs of Real Data</a>
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cannam@95: 
cannam@95: <p>This chapter describes the basic usage of FFTW, i.e., how to compute
cannam@95: <a name="index-basic-interface-14"></a>the Fourier transform of a single array.  This chapter tells the
cannam@95: truth, but not the <em>whole</em> truth. Specifically, FFTW implements
cannam@95: additional routines and flags that are not documented here, although
cannam@95: in many cases we try to indicate where added capabilities exist.  For
cannam@95: more complete information, see <a href="FFTW-Reference.html#FFTW-Reference">FFTW Reference</a>.  (Note that you
cannam@95: need to compile and install FFTW before you can use it in a program. 
cannam@95: For the details of the installation, see <a href="Installation-and-Customization.html#Installation-and-Customization">Installation and Customization</a>.)
cannam@95: 
cannam@95:    <p>We recommend that you read this tutorial in order.<a rel="footnote" href="#fn-1" name="fnd-1"><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
cannam@95: main interest lies in one of the other transform types.
cannam@95: 
cannam@95:    <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>.
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cannam@95:    <div class="footnote">
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cannam@95: <h4>Footnotes</h4><p class="footnote"><small>[<a name="fn-1" href="#fnd-1">1</a>]</small> You can
cannam@95: read the tutorial in bit-reversed order after computing your first
cannam@95: transform.</p>
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