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std::divides(3) C++ Standard Libary std::divides(3) NAME std::divides - std::divides Synopsis Defined in header <functional> template<> (since C++14) class divides<void>; std::divides<> is a specialization of std::divides with parameter and return type deduced. Member types Member type Definition is_transparent /* unspecified */ Member functions operator() returns the quotient of two arguments (public member function) std::divides<>::operator() template< class T, class U> constexpr auto operator()( T&& lhs, U&& rhs ) const -> decltype(std::forward<T>(lhs) / std::forward<U>(rhs)); Returns the result of dividing lhs by rhs (or whatever operator/ is overloaded to do) Parameters lhs, rhs - values to divide Return value The result of lhs / rhs. Notes The member type is_transparent indicates to the caller that this function object is a transparent function object: it accepts arguments of arbitrary types and uses perfect forwarding, which avoids unnecessary copying and conversion when the function object is used in heterogeneous context, or with rvalue ar- guments. In particular, template functions such as std::set::find and std::set::lower_bound make use of this member type on their Compare types. Example // Run this code #include <complex> #include <functional> #include <iostream> int main() { constexpr std::complex z1{8.0, 4.0}, z2{1.0, 2.0}; std::cout << std::showpos << std::divides{}(z1, z2) << ' ' << z1 / z2 << '\n' << std::divides{}(z1, 5.) << ' ' << z1 / 5. << '\n' << std::divides{}(6., z2) << ' ' << 6. / z2 << '\n' ; } Output: (+3.2,-2.4) (+3.2,-2.4) (+1.6,+0.8) (+1.6,+0.8) (+1.2,-2.4) (+1.2,-2.4) http://cppreference.com 2022.07.31 std::divides(3)
NAME | Synopsis | Member types | Member functions | Parameters | Return value | Notes | Example | Output:
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