1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Using with GCC's __float128 datatype</title> 5<link rel="stylesheet" href="../../math.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../index.html" title="Math Toolkit 2.12.0"> 8<link rel="up" href="../high_precision.html" title="Using Boost.Math with High-Precision Floating-Point Libraries"> 9<link rel="prev" href="use_multiprecision.html" title="Using Boost.Multiprecision"> 10<link rel="next" href="use_mpfr.html" title="Using With MPFR or GMP - High-Precision Floating-Point Library"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="use_multiprecision.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../high_precision.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="use_mpfr.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h3 class="title"> 27<a name="math_toolkit.high_precision.float128"></a><a class="link" href="float128.html" title="Using with GCC's __float128 datatype">Using with GCC's 28 __float128 datatype</a> 29</h3></div></div></div> 30<p> 31 At present support for GCC's native <code class="computeroutput"><span class="identifier">__float128</span></code> 32 datatype is extremely limited: the numeric constants will all work with that 33 type, and that's about it. If you want to use the distributions or special 34 functions then you will need to provide your own wrapper header that: 35 </p> 36<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "> 37<li class="listitem"> 38 Provides <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">numeric_limits</span><span class="special"><</span><span class="identifier">__float128</span><span class="special">></span></code> 39 support. 40 </li> 41<li class="listitem"> 42 Provides overloads of the standard library math functions for type <code class="computeroutput"><span class="identifier">__float128</span></code> and which forward to the 43 libquadmath equivalents. 44 </li> 45</ul></div> 46<p> 47 Ultimately these facilities should be provided by GCC and <code class="computeroutput"><span class="identifier">libstdc</span><span class="special">++</span></code>. 48 </p> 49</div> 50<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 51<td align="left"></td> 52<td align="right"><div class="copyright-footer">Copyright © 2006-2019 Nikhar 53 Agrawal, Anton Bikineev, Paul A. Bristow, Marco Guazzone, Christopher Kormanyos, 54 Hubert Holin, Bruno Lalande, John Maddock, Jeremy Murphy, Matthew Pulver, Johan 55 Råde, Gautam Sewani, Benjamin Sobotta, Nicholas Thompson, Thijs van den Berg, 56 Daryle Walker and Xiaogang Zhang<p> 57 Distributed under the Boost Software License, Version 1.0. (See accompanying 58 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>) 59 </p> 60</div></td> 61</tr></table> 62<hr> 63<div class="spirit-nav"> 64<a accesskey="p" href="use_multiprecision.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../high_precision.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="use_mpfr.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 65</div> 66</body> 67</html> 68
