std::modulus - cppreference.com (original) (raw)

| | | | | -------------------------------- | | ------------- | | template<> class modulus<void>; | | (since C++14) |

std::modulus<void> is a specialization of std::modulus with parameter and return type deduced.

Contents

• 1 Nested types
• 2 Member functions
• 3 std::modulus::operator()
  • 3.1 Parameters
  • 3.2 Return value
  • 3.3 Example

[edit] Nested types

[edit] Member functions

| | returns the modulus of two arguments (public member function) | | ---------------------------------------------------------------- |

std::modulus::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 remainder of the division of lhs by rhs.

Parameters

Return value

std::forward<T>(lhs) % std::forward<U>(rhs).

[edit] Example

#include #include   struct M { M(int x) { std::cout << "M(" << x << ");\n"; } M() {} };   auto operator%(M, M) { std::cout << "operator%(M, M);\n"; return M{}; } auto operator%(M, int) { std::cout << "operator%(M, int);\n"; return M{}; } auto operator%(int, M) { std::cout << "operator%(int, M);\n"; return M{}; }   int main() { M m;   // 42 is converted into a temporary object M{42} std::modulus{}(m, 42); // calls operator%(M, M)   // no temporary object std::modulus{}(m, 42); // calls operator%(M, int) std::modulus{}(42, m); // calls operator%(int, M) }

Output:

M(42); operator%(M, M); operator%(M, int); operator%(int, M);