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<h3 class="section">4.3 Basic Interface</h3>

<p><a name="index-basic-interface-160"></a>
Recall that the FFTW API is divided into three parts<a rel="footnote" href="#fn-1" name="fnd-1"><sup>1</sup></a>: the <dfn>basic interface</dfn>
computes a single transform of contiguous data, the <dfn>advanced
interface</dfn> computes transforms of multiple or strided arrays, and the
<dfn>guru interface</dfn> supports the most general data layouts,
multiplicities, and strides.  This section describes the the basic
interface, which we expect to satisfy the needs of most users.

<ul class="menu">
<li><a accesskey="1" href="Complex-DFTs.html#Complex-DFTs">Complex DFTs</a>
<li><a accesskey="2" href="Planner-Flags.html#Planner-Flags">Planner Flags</a>
<li><a accesskey="3" href="Real_002ddata-DFTs.html#Real_002ddata-DFTs">Real-data DFTs</a>
<li><a accesskey="4" href="Real_002ddata-DFT-Array-Format.html#Real_002ddata-DFT-Array-Format">Real-data DFT Array Format</a>
<li><a accesskey="5" href="Real_002dto_002dReal-Transforms.html#Real_002dto_002dReal-Transforms">Real-to-Real Transforms</a>
<li><a accesskey="6" href="Real_002dto_002dReal-Transform-Kinds.html#Real_002dto_002dReal-Transform-Kinds">Real-to-Real Transform Kinds</a>
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<h4>Footnotes</h4><p class="footnote"><small>[<a name="fn-1" href="#fnd-1">1</a>]</small> <i>Gallia est
omnis divisa in partes tres</i> (Julius Caesar).</p>

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