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std::numeric_limits::max(3)    C++ Standard Libary   std::numeric_limits::max(3)

NAME
     std::numeric_limits::max - std::numeric_limits::max

Synopsis
	Defined in header <limits>
	static T max() throw(); 	    (until C++11)
	static constexpr T max() noexcept;  (since C++11)

	Returns  the  maximum  finite value representable by the numeric type T.
     Meaningful for
	all bounded types.

Return value
	T				 std::numeric_limits<T>::max()
	/* non-specialized */		 T()
	bool				 true
	char				 CHAR_MAX
	signed char			 SCHAR_MAX
	unsigned char			 UCHAR_MAX
	wchar_t 			 WCHAR_MAX
	char8_t (since C++20)		 UCHAR_MAX
	char16_t (since C++11)		 UINT_LEAST16_MAX
	char32_t (since C++11)		 UINT_LEAST32_MAX
	short				 SHRT_MAX
	unsigned short			 USHRT_MAX
	int				 INT_MAX
	unsigned int			 UINT_MAX
	long				 LONG_MAX
	unsigned long			 ULONG_MAX
	long long (since C++11) 	 LLONG_MAX
	unsigned long long (since C++11) ULLONG_MAX
	float				 FLT_MAX
	double				 DBL_MAX
	long double			 LDBL_MAX

Example
	Demonstrates the use of max() with some fundamental types and some stan-
     dard library
	typedefs (the output is system-specific):

     // Run this code

      #include <cstddef>
      #include <iostream>
      #include <limits>
      #include <string_view>
      #include <type_traits>

      template<typename T>
      void print_max_twice(std::string_view type)
      {
	  constexpr T max_value {std::numeric_limits<T>::max()};

	  std::cout << type << ": ";
	  if constexpr (std::is_floating_point_v<T>)
	      std::cout << std::defaultfloat << max_value << " or "
			<< std::hexfloat << max_value << '\n';
	  else
	      std::cout    <<	 std::dec    <<    static_cast<unsigned     long
     long>(max_value) << " or "
			<<     std::hex     <<	   static_cast<unsigned     long
     long>(max_value) << '\n';
      }

      int main()
      {
	  std::cout << std::showbase;

	  print_max_twice<bool>("bool");
	  print_max_twice<short>("short");
	  print_max_twice<int>("int");
	  print_max_twice<std::streamsize>("streamsize");
	  print_max_twice<std::size_t>("size_t");
	  print_max_twice<char>("char");
	  print_max_twice<char16_t>("char16_t");
	  print_max_twice<wchar_t>("wchar_t");
	  print_max_twice<float>("float");
	  print_max_twice<double>("double");
	  print_max_twice<long double>("long double");
      }

Possible output:
      bool: 1 or 0x1
      short: 32767 or 0x7fff
      int: 2147483647 or 0x7fffffff
      streamsize: 9223372036854775807 or 0x7fffffffffffffff
      size_t: 18446744073709551615 or 0xffffffffffffffff
      char: 127 or 0x7f
      char16_t: 65535 or 0xffff
      wchar_t: 2147483647 or 0x7fffffff
      float: 3.40282e+38 or 0x1.fffffep+127
      double: 1.79769e+308 or 0x1.fffffffffffffp+1023
      long double: 1.18973e+4932 or 0xf.fffffffffffffffp+16380

See also
	lowest		 returns the lowest finite value of the given type
	[static] (C++11) (public static member function)
	min		 returns the smallest finite value of the given type
	[static]	 (public static member function)

http://cppreference.com 	   2024.06.10	     std::numeric_limits::max(3)
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