Added thirdparty: boost library

thirdparty/include/boost/math/special_functions/detail/iconv.hpp

@@ -0,0 +1,42 @@
+//  Copyright (c) 2009 John Maddock
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_MATH_ICONV_HPP
+#define BOOST_MATH_ICONV_HPP
+
+#ifdef _MSC_VER
+#pragma once
+#endif
+
+#include <type_traits>
+#include <boost/math/special_functions/round.hpp>
+
+namespace boost { namespace math { namespace detail{
+
+template <class T, class Policy>
+inline int iconv_imp(T v, Policy const&, std::true_type const&)
+{
+   return static_cast<int>(v);
+}
+
+template <class T, class Policy>
+inline int iconv_imp(T v, Policy const& pol, std::false_type const&)
+{
+   BOOST_MATH_STD_USING
+   return iround(v, pol);
+}
+
+template <class T, class Policy>
+inline int iconv(T v, Policy const& pol)
+{
+   typedef typename std::is_convertible<T, int>::type tag_type;
+   return iconv_imp(v, pol, tag_type());
+}
+
+
+}}} // namespaces
+
+#endif // BOOST_MATH_ICONV_HPP
+