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std::numeri...ts::is_exact(3) C++ Standard Libarystd::numeri...ts::is_exact(3)

NAME
       std::numeric_limits::is_exact - std::numeric_limits::is_exact

Synopsis
	  static const bool is_exact;	   (until C++11)
	  static constexpr bool	is_exact;  (since C++11)

	  The value of std::numeric_limits<T>::is_exact	is true	for all	arith-
       metic types T
	  that use exact representation.

Standard specializations
	  T				      value    of    std::numeric_lim-
       its<T>::is_exact
	  /* non-specialized */		   false
	  bool				   true
	  char				   true
	  signed char			   true
	  unsigned char			   true
	  wchar_t			   true
	  char8_t (since C++20)		   true
	  char16_t (since C++11)	   true
	  char32_t (since C++11)	   true
	  short				   true
	  unsigned short		   true
	  int				   true
	  unsigned int			   true
	  long				   true
	  unsigned long			   true
	  long long (since C++11)	   true
	  unsigned long	long (since C++11) true
	  float				   false
	  double			   false
	  long double			   false

Notes
	  While	 all  fundamental  types   T   for   which   std::numeric_lim-
       its<T>::is_exact	== true	are
	  integer  types,  a library may define	exact types that are not inte-
       gers, e.g. a
	  rational arithmetic type representing	fractions.

See also
	  is_integer identifies	integer	types
	  [static]   (public static member constant)
	  is_signed  identifies	signed types
	  [static]   (public static member constant)
	  is_bounded identifies	types that represent a finite set of values
	  [static]   (public static member constant)

http://cppreference.com		  2024.06.10	 std::numeri...ts::is_exact(3)

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