123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280 |
- <html>
- <head>
- <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
- <title>floating-point Numbers</title>
- <link rel="stylesheet" href="../../multiprecision.css" type="text/css">
- <meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
- <link rel="home" href="../../index.html" title="Chapter 1. Boost.Multiprecision">
- <link rel="up" href="../tut.html" title="Tutorial">
- <link rel="prev" href="ints/egs/bitops.html" title="Bit Operations">
- <link rel="next" href="floats/cpp_bin_float.html" title="cpp_bin_float">
- </head>
- <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
- <table cellpadding="2" width="100%"><tr>
- <td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../boost.png"></td>
- <td align="center"><a href="../../../../../../index.html">Home</a></td>
- <td align="center"><a href="../../../../../../libs/libraries.htm">Libraries</a></td>
- <td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
- <td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
- <td align="center"><a href="../../../../../../more/index.htm">More</a></td>
- </tr></table>
- <hr>
- <div class="spirit-nav">
- <a accesskey="p" href="ints/egs/bitops.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="floats/cpp_bin_float.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a>
- </div>
- <div class="section">
- <div class="titlepage"><div><div><h3 class="title">
- <a name="boost_multiprecision.tut.floats"></a><a class="link" href="floats.html" title="floating-point Numbers">floating-point Numbers</a>
- </h3></div></div></div>
- <div class="toc"><dl class="toc">
- <dt><span class="section"><a href="floats/cpp_bin_float.html">cpp_bin_float</a></span></dt>
- <dt><span class="section"><a href="floats/cpp_dec_float.html">cpp_dec_float</a></span></dt>
- <dt><span class="section"><a href="floats/gmp_float.html">gmp_float</a></span></dt>
- <dt><span class="section"><a href="floats/mpfr_float.html">mpfr_float</a></span></dt>
- <dt><span class="section"><a href="floats/float128.html">float128</a></span></dt>
- <dt><span class="section"><a href="floats/fp_eg.html">Examples</a></span></dt>
- <dd><dl>
- <dt><span class="section"><a href="floats/fp_eg/aos.html">Area of
- Circle</a></span></dt>
- <dt><span class="section"><a href="floats/fp_eg/jel.html">Defining
- a Special Function.</a></span></dt>
- <dt><span class="section"><a href="floats/fp_eg/nd.html">Calculating
- a Derivative</a></span></dt>
- <dt><span class="section"><a href="floats/fp_eg/gi.html">Calculating
- an Integral</a></span></dt>
- <dt><span class="section"><a href="floats/fp_eg/poly_eg.html">Polynomial
- Evaluation</a></span></dt>
- <dt><span class="section"><a href="floats/fp_eg/variable_precision.html">Variable
- Precision Newton Evaluation</a></span></dt>
- </dl></dd>
- </dl></div>
- <p>
- The following back-ends provide floating-point arithmetic:
- </p>
- <div class="informaltable"><table class="table">
- <colgroup>
- <col>
- <col>
- <col>
- <col>
- <col>
- <col>
- </colgroup>
- <thead><tr>
- <th>
- <p>
- Backend Type
- </p>
- </th>
- <th>
- <p>
- Header
- </p>
- </th>
- <th>
- <p>
- Radix
- </p>
- </th>
- <th>
- <p>
- Dependencies
- </p>
- </th>
- <th>
- <p>
- Pros
- </p>
- </th>
- <th>
- <p>
- Cons
- </p>
- </th>
- </tr></thead>
- <tbody>
- <tr>
- <td>
- <p>
- <code class="computeroutput"><span class="identifier">cpp_bin_float</span><span class="special"><</span><span class="identifier">N</span><span class="special">></span></code>
- </p>
- </td>
- <td>
- <p>
- boost/multiprecision/cpp_bin_float.hpp
- </p>
- </td>
- <td>
- <p>
- 2
- </p>
- </td>
- <td>
- <p>
- None
- </p>
- </td>
- <td>
- <p>
- Header only, all C++ implementation. Boost licence.
- </p>
- </td>
- <td>
- <p>
- Approximately 2x slower than the <a href="http://www.mpfr.org" target="_top">MPFR</a>
- or <a href="http://gmplib.org" target="_top">GMP</a> libraries.
- </p>
- </td>
- </tr>
- <tr>
- <td>
- <p>
- <code class="computeroutput"><span class="identifier">cpp_dec_float</span><span class="special"><</span><span class="identifier">N</span><span class="special">></span></code>
- </p>
- </td>
- <td>
- <p>
- boost/multiprecision/cpp_dec_float.hpp
- </p>
- </td>
- <td>
- <p>
- 10
- </p>
- </td>
- <td>
- <p>
- None
- </p>
- </td>
- <td>
- <p>
- Header only, all C++ implementation. Boost licence.
- </p>
- </td>
- <td>
- <p>
- Approximately 2x slower than the <a href="http://www.mpfr.org" target="_top">MPFR</a>
- or <a href="http://gmplib.org" target="_top">GMP</a> libraries.
- </p>
- </td>
- </tr>
- <tr>
- <td>
- <p>
- <code class="computeroutput"><span class="identifier">mpf_float</span><span class="special"><</span><span class="identifier">N</span><span class="special">></span></code>
- </p>
- </td>
- <td>
- <p>
- boost/multiprecision/gmp.hpp
- </p>
- </td>
- <td>
- <p>
- 2
- </p>
- </td>
- <td>
- <p>
- <a href="http://gmplib.org" target="_top">GMP</a>
- </p>
- </td>
- <td>
- <p>
- Very fast and efficient back-end.
- </p>
- </td>
- <td>
- <p>
- Dependency on GNU licensed <a href="http://gmplib.org" target="_top">GMP</a>
- library.
- </p>
- </td>
- </tr>
- <tr>
- <td>
- <p>
- <code class="computeroutput"><span class="identifier">mpfr_float</span><span class="special"><</span><span class="identifier">N</span><span class="special">></span></code>
- </p>
- </td>
- <td>
- <p>
- boost/multiprecision/mpfr.hpp
- </p>
- </td>
- <td>
- <p>
- 2
- </p>
- </td>
- <td>
- <p>
- <a href="http://gmplib.org" target="_top">GMP</a> and <a href="http://www.mpfr.org" target="_top">MPFR</a>
- </p>
- </td>
- <td>
- <p>
- Very fast and efficient back-end, with its own standard library
- implementation.
- </p>
- </td>
- <td>
- <p>
- Dependency on GNU licensed <a href="http://gmplib.org" target="_top">GMP</a>
- and <a href="http://www.mpfr.org" target="_top">MPFR</a> libraries.
- </p>
- </td>
- </tr>
- <tr>
- <td>
- <p>
- <code class="computeroutput"><span class="identifier">float128</span></code>
- </p>
- </td>
- <td>
- <p>
- boost/multiprecision/float128.hpp
- </p>
- </td>
- <td>
- <p>
- 2
- </p>
- </td>
- <td>
- <p>
- Either <a href="http://gcc.gnu.org/onlinedocs/libquadmath/" target="_top">libquadmath</a>
- or the Intel C++ Math library.
- </p>
- </td>
- <td>
- <p>
- Very fast and efficient back-end for 128-bit floating-point values
- (113-bit mantissa, equivalent to FORTRAN's QUAD real)
- </p>
- </td>
- <td>
- <p>
- Depends on the compiler being either recent GCC or Intel C++ versions.
- </p>
- </td>
- </tr>
- </tbody>
- </table></div>
- </div>
- <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
- <td align="left"></td>
- <td align="right"><div class="copyright-footer">Copyright © 2002-2019 John Maddock
- and Christopher Kormanyos<p>
- Distributed under the Boost Software License, Version 1.0. (See accompanying
- 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>)
- </p>
- </div></td>
- </tr></table>
- <hr>
- <div class="spirit-nav">
- <a accesskey="p" href="ints/egs/bitops.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="floats/cpp_bin_float.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a>
- </div>
- </body>
- </html>
|