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// (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
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// Permission to copy, use, modify, sell and distribute this software is
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// granted provided this copyright notice appears in all copies. This software
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// is provided "as is" without express or implied warranty, and with no claim
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// as to its suitability for any purpose.
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// See http://www.boost.org for most recent version including documentation.
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#ifndef BOOST_TT_INTRINSICS_HPP_INCLUDED
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#define BOOST_TT_INTRINSICS_HPP_INCLUDED
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#ifndef BOOST_TT_CONFIG_HPP_INCLUDED
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#include "boost/type_traits/config.hpp"
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// Helper macros for builtin compiler support.
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// If your compiler has builtin support for any of the following
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// traits concepts, then redefine the appropriate macros to pick
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// up on the compiler support:
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// (these should largely ignore cv-qualifiers)
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// BOOST_IS_UNION(T) should evaluate to true if T is a union type
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// BOOST_IS_POD(T) should evaluate to true if T is a POD type
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// BOOST_IS_EMPTY(T) should evaluate to true if T is an empty struct or union
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// BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) should evaluate to true if "T x;" has no effect
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// BOOST_HAS_TRIVIAL_COPY(T) should evaluate to true if T(t) <==> memcpy
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// BOOST_HAS_TRIVIAL_ASSIGN(T) should evaluate to true if t = u <==> memcpy
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// BOOST_HAS_TRIVIAL_DESTRUCTOR(T) should evaluate to true if ~T() has no effect
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#ifdef BOOST_HAS_SGI_TYPE_TRAITS
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// Hook into SGI's __type_traits class, this will pick up user supplied
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// specializations as well as SGI - compiler supplied specializations.
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# include "boost/type_traits/is_same.hpp"
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# include <type_traits.h>
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# define BOOST_IS_POD(T) ::boost::is_same< typename ::__type_traits<T>::is_POD_type, ::__true_type>::value
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# define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) ::boost::is_same< typename ::__type_traits<T>::has_trivial_default_constructor, ::__true_type>::value
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# define BOOST_HAS_TRIVIAL_COPY(T) ::boost::is_same< typename ::__type_traits<T>::has_trivial_copy_constructor, ::__true_type>::value
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# define BOOST_HAS_TRIVIAL_ASSIGN(T) ::boost::is_same< typename ::__type_traits<T>::has_trivial_assignment_operator, ::__true_type>::value
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# define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) ::boost::is_same< typename ::__type_traits<T>::has_trivial_destructor, ::__true_type>::value
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#if defined(__MSL_CPP__) && (__MSL_CPP__ >= 0x8000)
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// Metrowerks compiler is acquiring intrinsic type traits support
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// post version 8. We hook into the published interface to pick up
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// user defined specializations as well as compiler intrinsics as
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// and when they become available:
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# include <msl_utility>
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# define BOOST_IS_UNION(T) BOOST_STD_EXTENSION_NAMESPACE::is_union<T>::value
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# define BOOST_IS_POD(T) BOOST_STD_EXTENSION_NAMESPACE::is_POD<T>::value
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# define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) BOOST_STD_EXTENSION_NAMESPACE::has_trivial_default_ctor<T>::value
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# define BOOST_HAS_TRIVIAL_COPY(T) BOOST_STD_EXTENSION_NAMESPACE::has_trivial_copy_ctor<T>::value
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# define BOOST_HAS_TRIVIAL_ASSIGN(T) BOOST_STD_EXTENSION_NAMESPACE::has_trivial_assignment<T>::value
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# define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) BOOST_STD_EXTENSION_NAMESPACE::has_trivial_dtor<T>::value
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#ifndef BOOST_IS_UNION
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# define BOOST_IS_UNION(T) false
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# define BOOST_IS_POD(T) false
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#ifndef BOOST_IS_EMPTY
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# define BOOST_IS_EMPTY(T) false
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#ifndef BOOST_HAS_TRIVIAL_CONSTRUCTOR
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# define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) false
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#ifndef BOOST_HAS_TRIVIAL_COPY
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# define BOOST_HAS_TRIVIAL_COPY(T) false
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#ifndef BOOST_HAS_TRIVIAL_ASSIGN
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# define BOOST_HAS_TRIVIAL_ASSIGN(T) false
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#ifndef BOOST_HAS_TRIVIAL_DESTRUCTOR
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# define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) false
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#endif // BOOST_TT_INTRINSICS_HPP_INCLUDED