22 General utilities library [utilities]

22.10 Function objects [function.objects]

22.10.11 Bitwise operations [bitwise.operations]

22.10.11.1 General [bitwise.operations.general]

The library provides basic function object classes for all of the bitwise operators in the language ([expr.bit.and], [expr.or], [expr.xor], [expr.unary.op]).

22.10.11.2 Class template bit_and [bitwise.operations.and]

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template<class T = void> struct bit_and {
  constexpr T operator()(const T& x, const T& y) const;
};

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constexpr T operator()(const T& x, const T& y) const;

Returns: x & y.

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template<> struct bit_and<void> {
  template<class T, class U> constexpr auto operator()(T&& t, U&& u) const
    -> decltype(std::forward<T>(t) & std::forward<U>(u));

  using is_transparent = unspecified;
};

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template<class T, class U> constexpr auto operator()(T&& t, U&& u) const
    -> decltype(std::forward<T>(t) & std::forward<U>(u));

Returns: std::forward<T>(t) & std::forward<U>(u).

22.10.11.3 Class template bit_or [bitwise.operations.or]

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template<class T = void> struct bit_or {
  constexpr T operator()(const T& x, const T& y) const;
};

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constexpr T operator()(const T& x, const T& y) const;

Returns: x | y.

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template<> struct bit_or<void> {
  template<class T, class U> constexpr auto operator()(T&& t, U&& u) const
    -> decltype(std::forward<T>(t) | std::forward<U>(u));

  using is_transparent = unspecified;
};

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template<class T, class U> constexpr auto operator()(T&& t, U&& u) const
    -> decltype(std::forward<T>(t) | std::forward<U>(u));

Returns: std::forward<T>(t) | std::forward<U>(u).

22.10.11.4 Class template bit_xor [bitwise.operations.xor]

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template<class T = void> struct bit_xor {
  constexpr T operator()(const T& x, const T& y) const;
};

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constexpr T operator()(const T& x, const T& y) const;

Returns: x ^ y.

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template<> struct bit_xor<void> {
  template<class T, class U> constexpr auto operator()(T&& t, U&& u) const
    -> decltype(std::forward<T>(t) ^ std::forward<U>(u));

  using is_transparent = unspecified;
};

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template<class T, class U> constexpr auto operator()(T&& t, U&& u) const
    -> decltype(std::forward<T>(t) ^ std::forward<U>(u));

Returns: std::forward<T>(t) ^ std::forward<U>(u).

22.10.11.5 Class template bit_not [bitwise.operations.not]

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template<class T = void> struct bit_not {
  constexpr T operator()(const T& x) const;
};

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constexpr T operator()(const T& x) const;

Returns: ~x.

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template<> struct bit_not<void> {
  template<class T> constexpr auto operator()(T&& t) const
    -> decltype(~std::forward<T>(t));

  using is_transparent = unspecified;
};

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template<class T> constexpr auto operator()(T&& t) const
    -> decltype(~std::forward<T>(t));

Returns: ~std::forward<T>(t).