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std::is_execution_policy(3)    C++ Standard Libary   std::is_execution_policy(3)

NAME
     std::is_execution_policy - std::is_execution_policy

Synopsis
	Defined in header <execution>
	template< class T >	       (since C++17)
	struct is_execution_policy;

	Checks	whether T is a standard or implementation-defined execution pol-
     icy type.

	Provides the member constant value which is equal to true,  if	T  is  a
     standard
	execution  policy  type,  or  an implementation-defined execution policy
     type.
	Otherwise, value is equal to false.

	If the program adds specializations for std::is_execution_policy or
	std::is_execution_policy_v, the behavior is undefined.

Template parameters
	T - a type to check

	Helper template

	Defined in header <execution>
	template< class T >
	inline	     constexpr	      bool	  is_execution_policy_v        =
     (since C++17)
	std::is_execution_policy<T>::value;

     Inherited from std::integral_constant

Member constants
	value	  true	if  T  is a standard or implementation-defined execution
     policy type,
	[static] false otherwise
		 (public static member constant)

Member functions
	operator bool converts the object to bool, returns value
		      (public member function)
	operator()    returns value
	(C++14)       (public member function)

Member types
	Type	   Definition
	value_type bool
	type	   std::integral_constant<bool, value>

See also
	sequenced_policy
	parallel_policy
	parallel_unsequenced_policy
	unsequenced_policy	    execution policy types
	(C++17) 		    (class)
	(C++17)
	(C++17)
	(C++20)
	seq
	par
	par_unseq
	unseq			    global execution policy objects
	(C++17) 		    (constant)
	(C++17)
	(C++17)
	(C++20)

http://cppreference.com 	   2024.06.10	     std::is_execution_policy(3)
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