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/*
Copyright 2017 Glen Joseph Fernandes
<glenjofe -at- gmail.com>
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)
*/
#ifndef BOOST_TT_MAKE_VOID_HPP_INCLUDED
#define BOOST_TT_MAKE_VOID_HPP_INCLUDED
#include <boost/config.hpp>
namespace boost {
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
template<class...>
struct make_void {
typedef void type;
};
#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
template<class... Ts>
using void_t = typename make_void<Ts...>::type;
#endif
#else /* BOOST_NO_CXX11_VARIADIC_TEMPLATES */
template<class = void,
class = void,
class = void,
class = void,
class = void>
struct make_void {
typedef void type;
};
#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
template<class A = void,
class B = void,
class C = void,
class D = void,
class E = void>
using void_t = typename make_void<A, B, C, D, E>::type;
#endif
#endif
} /* boost */
#endif
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