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- /*
- Copyright 2003 The Trustees of Indiana University
- Authors: Jaakko Jarvi (jajarvi at osl.iu.edu)
- Jeremiah Willcock (jewillco at osl.iu.edu)
- Andrew Lumsdaine (lums at osl.iu.edu)
- Copyright 2018 Glen Joseph Fernandes
- (glenjofe@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_ENABLE_IF_HPP_INCLUDED
- #define BOOST_TT_ENABLE_IF_HPP_INCLUDED
- #include <boost/config.hpp>
- namespace boost {
- template<bool B, class T = void>
- struct enable_if_ {
- typedef T type;
- };
- template<class T>
- struct enable_if_<false, T> { };
- #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
- template<bool B, class T = void>
- using enable_if_t = typename enable_if_<B, T>::type;
- #endif
- } /* boost */
- #endif
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