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std::multiplies(3) C++ Standard Libary std::multiplies(3) NAME std::multiplies - std::multiplies Synopsis Defined in header <functional> template< class T > (until C++14) struct multiplies; template< class T = void > (since C++14) struct multiplies; Function object for performing multiplication. Effectively calls op- erator* on two instances of type T. Specializations The standard library provides a specialization of std::multiplies when T is not specified, which leaves the parameter types and return type to be deduced. (since C++14) multiplies<void> function object implementing x * y deducing argu- ment (C++14) and return types (class template specialization) Member types Type Defini- tion result_type (deprecated in C++17)(removed in C++20) T first_argument_type (deprecated in C++17)(removed in C++20) T second_argument_type (deprecated in C++17)(removed in C++20) T These member types are obtained via publicly inheriting (until C++11) std::binary_function<T, T, T>. Member functions operator() returns the product of two arguments (public member function) std::multiplies::operator() T operator()( const T& lhs, const T& rhs ) const; (until C++14) constexpr T operator()( const T& lhs, const T& rhs ) const; (since C++14) Returns the product of lhs and rhs. Parameters lhs, rhs - values to multiply Return value The result of lhs * rhs. Exceptions May throw implementation-defined exceptions. Possible implementation constexpr T operator()(const T &lhs, const T &rhs) const { return lhs * rhs; } http://cppreference.com 2022.07.31 std::multiplies(3)
NAME | Synopsis | Specializations | Member types | Member functions | Parameters | Return value | Exceptions | Possible implementation
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