ceph/src/boost/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 {
  13 namespace math {
  14
  15 namespace lanczos {
  16
  17 template <class T, class Policy>
  18 struct lanczos;
  19
  20 template <class Backend, boost::multiprecision::expression_template_option ExpressionTemplates, class Policy>
  21 struct lanczos<multiprecision::number<Backend, ExpressionTemplates>, Policy>
  22 {
  23    typedef typename boost::math::policies::precision<multiprecision::number<Backend, ExpressionTemplates>, Policy>::type precision_type;
  24    typedef typename mpl::if_c<
  25        precision_type::value && (precision_type::value <= 73),
  26        lanczos13UDT,
  27        typename mpl::if_c<
  28            precision_type::value && (precision_type::value <= 122),
  29            lanczos22UDT,
  30            undefined_lanczos>::type>::type type;
  31 };
  32
  33 }
  34
  35 }} // namespace boost::math::lanczos
  36
  37 #endif