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69 lines
1.3 KiB
C++
69 lines
1.3 KiB
C++
#ifndef BOOST_NUMERIC_SAFE_COMMON_HPP
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#define BOOST_NUMERIC_SAFE_COMMON_HPP
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER) && (_MSC_VER >= 1020)
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# pragma once
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#endif
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// Copyright (c) 2012 Robert Ramey
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <type_traits>
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namespace boost {
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namespace numeric {
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// default implementations for required meta-functions
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template<typename T>
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struct is_safe : public std::false_type
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{};
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template<typename T>
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struct base_type {
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typedef T type;
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};
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template<class T>
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constexpr const typename base_type<T>::type & base_value(const T & t) {
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return static_cast<const typename base_type<T>::type & >(t);
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}
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template<typename T>
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struct get_promotion_policy {
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typedef void type;
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};
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template<typename T>
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struct get_exception_policy {
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typedef void type;
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};
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// used for debugging
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// usage - print_type<T>;
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// provokes error message with name of type T
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template<typename Tx>
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struct print_impl {
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typedef typename Tx::error_message type;
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};
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template<typename Tx>
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using print_type = typename print_impl<Tx>::type;
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template<int N>
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struct print_value
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{
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enum test : unsigned char {
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value = N + 256
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};
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};
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} // numeric
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} // boost
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#endif // BOOST_NUMERIC_SAFE_COMMON_HPP
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