1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>declval</title> 5<link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../index.html" title="Chapter 1. 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For example, the type of the result of adding an <code class="computeroutput"><span class="keyword">int</span></code> 44 and a <code class="computeroutput"><span class="keyword">float</span></code> can be obtained 45 with the expression <code class="computeroutput"><span class="keyword">decltype</span><span class="special">(</span> <span class="identifier">declval</span><span class="special"><</span><span class="keyword">int</span><span class="special">>()</span> 46 <span class="special">+</span> <span class="identifier">declval</span><span class="special"><</span><span class="keyword">float</span><span class="special">>()</span> <span class="special">)</span></code>. 47 </p> 48</div> 49<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 50<td align="left"></td> 51<td align="right"><div class="copyright-footer">Copyright © 2000, 2011 Adobe Systems Inc, David Abrahams, 52 Frederic Bron, Steve Cleary, Beman Dawes, Glen Fernandes, Aleksey Gurtovoy, 53 Howard Hinnant, Jesse Jones, Mat Marcus, Itay Maman, John Maddock, Alexander 54 Nasonov, Thorsten Ottosen, Roman Perepelitsa, Robert Ramey, Jeremy Siek, Robert 55 Stewart and Steven Watanabe<p> 56 Distributed under the Boost Software License, Version 1.0. (See accompanying 57 file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) 58 </p> 59</div></td> 60</tr></table> 61<hr> 62<div class="spirit-nav"> 63<a accesskey="p" href="decay.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="detected.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 64</div> 65</body> 66</html> 67