CNL  2.0.2 (development)
Compositional Numeric Library
set_tag.h
1 
2 // Copyright John McFarlane 2019.
3 // Distributed under the Boost Software License, Version 1.0.
4 // (See accompanying file ../LICENSE_1_0.txt or copy at
5 // http://www.boost.org/LICENSE_1_0.txt)
6 
7 #if !defined(CNL_IMPL_ELASTIC_INTEGER_SET_TAG_H)
8 #define CNL_IMPL_ELASTIC_INTEGER_SET_TAG_H
9 
10 #include "../num_traits/adopt_width.h"
11 #include "../num_traits/set_tag.h"
12 #include "definition.h"
13 
14 #include <type_traits>
15 
17 namespace cnl {
20  template<int Digits, typename Narrowest, int NewDigits, typename NewNarrowest>
21  struct set_tag<elastic_integer<Digits, Narrowest>, elastic_tag<NewDigits, NewNarrowest>>
22  : std::type_identity<
23  elastic_integer<NewDigits, _impl::adopt_width_t<NewNarrowest, Narrowest>>> {
24  };
25 }
26 
27 #endif // CNL_IMPL_ELASTIC_INTEGER_SET_TAG_H
cnl
compositional numeric library
Definition: abort.h:15
cnl::elastic_integer
_impl::wrapper< typename elastic_tag< Digits, Narrowest >::rep, elastic_tag< Digits, Narrowest > > elastic_integer
An integer type with auto-widening operators.
Definition: definition.h:39
cnl::set_tag
meta-function object that transforms a component from one Tag type to another
Definition: set_tag.h:21