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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 V1.75.2" /><meta name="keywords" content=" ISO C++ , library " /><link rel="home" 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="generalized_numeric_operations.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="generalized_numeric_operations.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 21. Complex"><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="complex.html#numerics.complex.processing">complex Processing</a></span></dt></dl></div><p>
</p><div class="sect1" title="complex Processing"><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<></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<></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<<</code>
and <code class="code">op>></code> that work with iostreams: <code class="code">op<<</code>
prints <code class="code">(u,v)</code> and <code class="code">op>></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="generalized_numeric_operations.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Part X.
Numerics
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