Added thirdparty: boost library

thirdparty/include/boost/intrusive/detail/value_functors.hpp

@@ -0,0 +1,52 @@
+#ifndef BOOST_INTRUSIVE_DETAIL_VALUE_FUNCTORS_HPP
+#define BOOST_INTRUSIVE_DETAIL_VALUE_FUNCTORS_HPP
+///////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2017-2021. Distributed under 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)
+//
+// See http://www.boost.org/libs/intrusive for documentation.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef BOOST_CONFIG_HPP
+#  include <boost/config.hpp>
+#endif
+
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+#  pragma once
+#endif
+
+#include <cstddef>
+
+namespace boost {
+namespace intrusive {
+
+//Functors for member algorithm defaults
+template<class ValueType>
+struct value_less
+{
+   bool operator()(const ValueType &a, const ValueType &b) const
+      {  return a < b;  }
+};
+
+//Functors for member algorithm defaults
+template<class T>
+struct value_less<T*>
+{
+   bool operator()(const T *a, const T* b) const
+      {  return std::size_t(a) < std::size_t(b);  }
+};
+
+template<class ValueType>
+struct value_equal
+{
+   bool operator()(const ValueType &a, const ValueType &b) const
+      {  return a == b;  }
+};
+
+}  //namespace intrusive {
+}  //namespace boost {
+
+#endif   //BOOST_INTRUSIVE_DETAIL_VALUE_FUNCTORS_HPP