1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Integer Types</title> 5<link rel="stylesheet" href="../../multiprecision.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. Boost.Multiprecision"> 8<link rel="up" href="../tut.html" title="Tutorial"> 9<link rel="prev" href="../tut.html" title="Tutorial"> 10<link rel="next" href="ints/cpp_int.html" title="cpp_int"> 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="../tut.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../tut.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="ints/cpp_int.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="boost_multiprecision.tut.ints"></a><a class="link" href="ints.html" title="Integer Types">Integer Types</a> 28</h3></div></div></div> 29<div class="toc"><dl class="toc"> 30<dt><span class="section"><a href="ints/cpp_int.html">cpp_int</a></span></dt> 31<dt><span class="section"><a href="ints/gmp_int.html">gmp_int</a></span></dt> 32<dt><span class="section"><a href="ints/tom_int.html">tom_int</a></span></dt> 33<dt><span class="section"><a href="ints/egs.html">Examples</a></span></dt> 34<dd><dl> 35<dt><span class="section"><a href="ints/egs/factorials.html">Factorials</a></span></dt> 36<dt><span class="section"><a href="ints/egs/bitops.html">Bit Operations</a></span></dt> 37</dl></dd> 38</dl></div> 39<p> 40 The following back-ends provide integer arithmetic: 41 </p> 42<div class="informaltable"><table class="table"> 43<colgroup> 44<col> 45<col> 46<col> 47<col> 48<col> 49<col> 50</colgroup> 51<thead><tr> 52<th> 53 <p> 54 Backend Type 55 </p> 56 </th> 57<th> 58 <p> 59 Header 60 </p> 61 </th> 62<th> 63 <p> 64 Radix 65 </p> 66 </th> 67<th> 68 <p> 69 Dependencies 70 </p> 71 </th> 72<th> 73 <p> 74 Pros 75 </p> 76 </th> 77<th> 78 <p> 79 Cons 80 </p> 81 </th> 82</tr></thead> 83<tbody> 84<tr> 85<td> 86 <p> 87 <code class="computeroutput"><span class="identifier">cpp_int</span></code> 88 </p> 89 </td> 90<td> 91 <p> 92 boost/multiprecision/cpp_int.hpp 93 </p> 94 </td> 95<td> 96 <p> 97 2 98 </p> 99 </td> 100<td> 101 <p> 102 None 103 </p> 104 </td> 105<td> 106 <p> 107 Very versatile, Boost licensed, all C++ integer type which support 108 both <a href="http://en.wikipedia.org/wiki/Arbitrary-precision_arithmetic" target="_top">arbitrary 109 precision</a> and fixed precision integer types. 110 </p> 111 </td> 112<td> 113 <p> 114 Slower than <a href="http://gmplib.org" target="_top">GMP</a>, though 115 typically not as slow as <a href="http://libtom.net" target="_top">libtommath</a> 116 </p> 117 </td> 118</tr> 119<tr> 120<td> 121 <p> 122 <code class="computeroutput"><span class="identifier">gmp_int</span></code> 123 </p> 124 </td> 125<td> 126 <p> 127 boost/multiprecision/gmp.hpp 128 </p> 129 </td> 130<td> 131 <p> 132 2 133 </p> 134 </td> 135<td> 136 <p> 137 <a href="http://gmplib.org" target="_top">GMP</a> 138 </p> 139 </td> 140<td> 141 <p> 142 Very fast and efficient back-end. 143 </p> 144 </td> 145<td> 146 <p> 147 Dependency on GNU licensed <a href="http://gmplib.org" target="_top">GMP</a> 148 library. 149 </p> 150 </td> 151</tr> 152<tr> 153<td> 154 <p> 155 <code class="computeroutput"><span class="identifier">tom_int</span></code> 156 </p> 157 </td> 158<td> 159 <p> 160 boost/multiprecision/tommath.hpp 161 </p> 162 </td> 163<td> 164 <p> 165 2 166 </p> 167 </td> 168<td> 169 <p> 170 <a href="http://libtom.net" target="_top">libtommath</a> 171 </p> 172 </td> 173<td> 174 <p> 175 Public domain back-end with no licence restrictions. 176 </p> 177 </td> 178<td> 179 <p> 180 Slower than <a href="http://gmplib.org" target="_top">GMP</a>. 181 </p> 182 </td> 183</tr> 184</tbody> 185</table></div> 186</div> 187<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 188<td align="left"></td> 189<td align="right"><div class="copyright-footer">Copyright © 2002-2020 John 190 Maddock and Christopher Kormanyos<p> 191 Distributed under the Boost Software License, Version 1.0. (See accompanying 192 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>) 193 </p> 194</div></td> 195</tr></table> 196<hr> 197<div class="spirit-nav"> 198<a accesskey="p" href="../tut.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../tut.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="ints/cpp_int.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 199</div> 200</body> 201</html> 202
