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35 lines
930 B
C++
35 lines
930 B
C++
#ifndef SPROUT_FUNCTIONAL_LOGICAL_AND_HPP
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#define SPROUT_FUNCTIONAL_LOGICAL_AND_HPP
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#include <utility>
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#include <sprout/config.hpp>
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#include <sprout/utility/forward.hpp>
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namespace sprout {
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// 20.8.6 logical operations
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template<typename T = void>
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struct logical_and {
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public:
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typedef T first_argument_type;
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typedef T second_argument_type;
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typedef bool result_type;
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public:
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SPROUT_CONSTEXPR bool operator()(T const& x, T const& y) const {
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return x && y;
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}
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};
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template<>
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struct logical_and<void> {
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public:
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template<typename T, typename U>
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SPROUT_CONSTEXPR decltype(std::declval<T>() && std::declval<U>())
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operator()(T&& x, U&& y)
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const SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(std::declval<T>() && std::declval<U>()))
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{
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return sprout::forward<T>(x) && sprout::forward<U>(y);
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}
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};
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} // namespace sprout
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#endif // #ifndef SPROUT_FUNCTIONAL_LOGICAL_AND_HPP
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