1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5<title>Macro BOOST_NO_CONSTEXPR_IF</title> 6<link rel="stylesheet" href="../../doc/src/boostbook.css" type="text/css"> 7<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 8<link rel="home" href="index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> 9<link rel="up" href="yap/reference.html#header.boost.yap.config_hpp" title="Header <boost/yap/config.hpp>"> 10<link rel="prev" href="boost/yap/expression_ref.html" title="Type definition expression_ref"> 11<link rel="next" href="boost/yap/expression.html" title="Struct template expression"> 12</head> 13<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 14<table cellpadding="2" width="100%"><tr> 15<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../boost.png"></td> 16<td align="center"><a href="../../index.html">Home</a></td> 17<td align="center"><a href="../../libs/libraries.htm">Libraries</a></td> 18<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 19<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 20<td align="center"><a href="../../more/index.htm">More</a></td> 21</tr></table> 22<hr> 23<div class="spirit-nav"> 24<a accesskey="p" href="boost/yap/expression_ref.html"><img src="../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="yap/reference.html#header.boost.yap.config_hpp"><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="boost/yap/expression.html"><img src="../../doc/src/images/next.png" alt="Next"></a> 25</div> 26<div class="refentry"> 27<a name="BOOST_NO_CONSTEXPR_IF"></a><div class="titlepage"></div> 28<div class="refnamediv"> 29<h2><span class="refentrytitle">Macro BOOST_NO_CONSTEXPR_IF</span></h2> 30<p>BOOST_NO_CONSTEXPR_IF</p> 31</div> 32<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> 33<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="yap/reference.html#header.boost.yap.config_hpp" title="Header <boost/yap/config.hpp>">boost/yap/config.hpp</a>> 34 35</span>BOOST_NO_CONSTEXPR_IF</pre></div> 36<div class="refsect1"> 37<a name="id-1.3.48.8.2.4.3.4"></a><h2>Description</h2> 38<p>Indicates whether the compiler supports constexpr if.</p> 39<p>If the user does not define any value for this, we assume that the compiler does not have the necessary support. Note that this is a temporary hack; this should eventually be a Boost-wide macro. </p> 40</div> 41</div> 42<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 43<td align="left"></td> 44<td align="right"><div class="copyright-footer">Copyright © 2018 T. Zachary Laine<p> 45 Distributed under the Boost Software License, Version 1.0. (See accompanying 46 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>) 47 </p> 48</div></td> 49</tr></table> 50<hr> 51<div class="spirit-nav"> 52<a accesskey="p" href="boost/yap/expression_ref.html"><img src="../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="yap/reference.html#header.boost.yap.config_hpp"><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="boost/yap/expression.html"><img src="../../doc/src/images/next.png" alt="Next"></a> 53</div> 54</body> 55</html> 56
