Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
std::ratio_greater_equal(3)   C++ Standard Libary  std::ratio_greater_equal(3)

NAME
       std::ratio_greater_equal	- std::ratio_greater_equal

Synopsis
	  Defined in header <ratio>
	  template< class R1, class R2 >
	  struct  ratio_greater_equal  :  std::integral_constant<bool,	/* see
       (since C++11)
	  below	*/> { };

	  If the ratio R1 is greater than or equal to the ratio	 R2,  provides
       the member
	  constant value equal true. Otherwise,	value is false.

Member constants
	  value	    true if R1::num * R2::den >= R2::num * R1::den, or equiva-
       lent expression
	  [static] that	avoids overflow, 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>

Example
       // Run this code

	#include <iostream>
	#include <ratio>

	int main()
	{
	    static_assert(std::ratio_greater_equal<
		std::ratio<2, 3>,
		std::ratio<2, 3>>::value, "2/3 >= 2/3");

	    if (std::ratio_greater_equal<
		std::ratio<2,1>, std::ratio<1, 2>>::value)
		std::cout << "2/1 >= 1/2" "\n";

	    if (std::ratio_greater_equal<
		std::ratio<1,2>, std::ratio<1, 2>>::value)
		std::cout << "1/2 >= 1/2" "\n";

	    // Since C++17
	    static_assert(std::ratio_greater_equal_v<
		std::ratio<999'999, 1'000'000>,
		std::ratio<999'998, 999'999>> );

	    if constexpr (std::ratio_greater_equal_v<
		std::ratio<999'999, 1'000'000>,
		std::ratio<999'998, 999'999>>)
		std::cout << "999'999/1'000'000	>= 999'998/999'999" "\n";

	    if constexpr (std::ratio_greater_equal_v<
		std::ratio<999'999, 1'000'000>,
		std::ratio<999'999, 1'000'000>>)
		std::cout << "999'999/1'000'000	>= 999'999/1'000'000" "\n";
	}

Output:
	2/1 >= 1/2
	1/2 >= 1/2
	999'999/1'000'000 >= 999'998/999'999
	999'999/1'000'000 >= 999'999/1'000'000

See also
	  ratio_equal compares two ratio objects for equality at compile-time
	  (C++11)     (class template)
	  ratio_less  compares two ratio objects for less than at compile-time
	  (C++11)     (class template)

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

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=std::ratio_greater_equal&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>

home | help