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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 21. Complex</title><meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /><meta name="keywords" content="&#10;      ISO C++&#10;    , &#10;      library&#10;    " /><link rel="start" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="numerics.html" title="Part X. Numerics" /><link rel="prev" href="numerics.html" title="Part X. Numerics" /><link rel="next" href="bk01pt10ch22.html" title="Chapter 22. Generalized Operations" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 21. Complex</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="numerics.html">Prev</a> </td><th width="60%" align="center">Part X. Numerics</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt10ch22.html">Next</a></td></tr></table><hr /></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="manual.numerics.complex"></a>Chapter 21. Complex</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="bk01pt10ch21.html#numerics.complex.processing">complex Processing</a></span></dt></dl></div><p>
  </p><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="numerics.complex.processing"></a>complex Processing</h2></div></div></div><p>
    </p><p>Using <code class="code">complex&lt;&gt;</code> becomes even more comple- er, sorry,
      <span class="emphasis"><em>complicated</em></span>, with the not-quite-gratuitously-incompatible
      addition of complex types to the C language.  David Tribble has
      compiled a list of C++98 and C99 conflict points; his description of
      C's new type versus those of C++ and how to get them playing together
      nicely is
<a class="ulink" href="http://david.tribble.com/text/cdiffs.htm#C99-complex" target="_top">here</a>.
   </p><p><code class="code">complex&lt;&gt;</code> is intended to be instantiated with a
      floating-point type.  As long as you meet that and some other basic
      requirements, then the resulting instantiation has all of the usual
      math operators defined, as well as definitions of <code class="code">op&lt;&lt;</code>
      and <code class="code">op&gt;&gt;</code> that work with iostreams: <code class="code">op&lt;&lt;</code>
      prints <code class="code">(u,v)</code> and <code class="code">op&gt;&gt;</code> can read <code class="code">u</code>,
      <code class="code">(u)</code>, and <code class="code">(u,v)</code>.
   </p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="numerics.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="numerics.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt10ch22.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Part X. Numerics </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 22. Generalized Operations</td></tr></table></div></body></html>