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29 lines
1.1 KiB
C++
29 lines
1.1 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2016 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_DETAIL_DIGITS_TO_INT_HPP
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#define SPROUT_DETAIL_DIGITS_TO_INT_HPP
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#include <sprout/config.hpp>
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#include <sprout/type_traits/integral_constant.hpp>
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namespace sprout {
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namespace detail {
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template<typename IntType, char... Chars>
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struct digits_to_int;
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template<typename IntType, char C>
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struct digits_to_int<IntType, C>
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: public sprout::integral_constant<IntType, IntType(C - 48)>
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{};
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template<typename IntType, char Head, char... Tail>
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struct digits_to_int<IntType, Head, Tail...>
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: public sprout::integral_constant<IntType, 10 * IntType(Head - 48) + sprout::detail::digits_to_int<IntType, Tail...>::value>
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{};
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} // namespace detail
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} // namespace sprout
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#endif // #ifndef SPROUT_DETAIL_DIGITS_TO_INT_HPP
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