ceph/src/boost/libs/multiprecision/include/boost/multiprecision/detail/big_lanczos.hpp

   1
   2 //  Copyright (c) 2011 John Maddock
   3 //  Use, modification and distribution are subject to the
   4 //  Boost Software License, Version 1.0. (See accompanying file
   5 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6
   7 #ifndef BOOST_MP_BIG_LANCZOS
   8 #define BOOST_MP_BIG_LANCZOS
   9
  10 #include <boost/math/bindings/detail/big_lanczos.hpp>
  11
  12 namespace boost{ namespace math{
  13
  14 namespace lanczos{
  15
  16 template <class T, class Policy>
  17 struct lanczos;
  18
  19 template<class Backend, boost::multiprecision::expression_template_option ExpressionTemplates, class Policy>
  20 struct lanczos<multiprecision::number<Backend, ExpressionTemplates>, Policy>
  21 {
  22    typedef typename boost::math::policies::precision<multiprecision::number<Backend, ExpressionTemplates>, Policy>::type precision_type;
  23    typedef typename mpl::if_c<
  24       precision_type::value && (precision_type::value <= 73),
  25       lanczos13UDT,
  26       typename mpl::if_c<
  27       precision_type::value&& (precision_type::value <= 122),
  28          lanczos22UDT,
  29          undefined_lanczos
  30       >::type
  31    >::type type;
  32 };
  33
  34 } // namespace lanczos
  35
  36 }} // namespaces
  37
  38 #endif
  39