ceph/src/boost/libs/math/doc/html/math_toolkit/high_precision/use_ntl.html

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  26 <div class="titlepage"><div><div><h3 class="title">
  27 <a name="math_toolkit.high_precision.use_ntl"></a><a class="link" href="use_ntl.html" title="Using NTL Library">Using NTL Library</a>
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  29 <p>
  30         <a href="http://shoup.net/ntl/doc/RR.txt" target="_top">NTL::RR</a> (an arbitrarily-fixed
  31         precision floating-point number type), can be used via the bindings in <a href="../../../../../../boost/math/bindings/rr.hpp" target="_top">boost/math/bindings/rr.hpp</a>.
  32         For details, see <a href="http://shoup.net/ntl/" target="_top">NTL: A Library for doing
  33         Number Theory by Victor Shoup</a>.
  34       </p>
  35 <p>
  36         <span class="bold"><strong>New projects are recommended to use <a href="../../../../../../libs/multiprecision/doc/html/index.html" target="_top">Boost.Multiprecision</a>
  37         instead.</strong></span>
  38       </p>
  39 <p>
  40         Unfortunately <code class="computeroutput"><span class="identifier">NTL</span><span class="special">::</span><span class="identifier">RR</span></code> doesn't quite satisfy our conceptual
  41         requirements, so there is a very thin wrapper class <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">math</span><span class="special">::</span><span class="identifier">ntl</span><span class="special">::</span><span class="identifier">RR</span></code> defined in <a href="../../../../../../boost/math/bindings/rr.hpp" target="_top">boost/math/bindings/rr.hpp</a>
  42         that you should use in place of <code class="computeroutput"><span class="identifier">NTL</span><span class="special">::</span><span class="identifier">RR</span></code>. The
  43         class is intended to be a drop-in replacement for the "real" NTL::RR
  44         that adds some syntactic sugar to keep this library happy, plus some of the
  45         standard library functions not implemented in NTL.
  46       </p>
  47 <p>
  48         For those functions that are based upon the <a class="link" href="../lanczos.html" title="The Lanczos Approximation">Lanczos
  49         approximation</a>, the bindings defines a series of approximations with
  50         up to 61 terms and accuracy up to approximately 3e-113. This therefore sets
  51         the upper limit for accuracy to the majority of functions defined this library
  52         when used with <code class="computeroutput"><span class="identifier">NTL</span><span class="special">::</span><span class="identifier">RR</span></code>.
  53       </p>
  54 <p>
  55         There is a concept checking test program for NTL support <a href="../../../../../../libs/math/test/ntl_concept_check.cpp" target="_top">here</a>.
  56       </p>
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  60 <td align="right"><div class="copyright-footer">Copyright &#169; 2006-2010, 2012-2014 Nikhar Agrawal,
  61       Anton Bikineev, Paul A. Bristow, Marco Guazzone, Christopher Kormanyos, Hubert
  62       Holin, Bruno Lalande, John Maddock, Jeremy Murphy, Johan R&#229;de, Gautam Sewani,
  63       Benjamin Sobotta, Thijs van den Berg, Daryle Walker and Xiaogang Zhang<p>
  64         Distributed under the Boost Software License, Version 1.0. (See accompanying
  65         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>)
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