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Showing content from https://en.cppreference.com/w/cpp/algorithm/../ranges/../numeric/ratio/ratio_greater.html below:

std::ratio_greater - cppreference.com

(since C++11)

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

[edit] Helper variable template

template< class R1, class R2 > constexpr bool ratio_greater_v = ratio_greater<R1, R2>::value;

(since C++17) Inherited from std::integral_constant Member constants true if R1::num * R2::den > R2::num * R1::den, or equivalent expression that avoids overflow, false otherwise
(public static member constant) Member functions converts the object to bool, returns value
(public member function) returns value
(public member function) Member types [edit] Example

#include <iostream>
#include <ratio>
 
int main()
{
    static_assert(std::ratio_greater<std::ratio<3, 4>, std::ratio<1, 2>>::value,
                  "3/4 > 1/2");
 
    if (std::ratio_greater<std::ratio<11, 12>, std::ratio<10, 11>>::value)
        std::cout << "11/12 > 10/11" "\n";
 
    // Since C++17
    static_assert(std::ratio_greater_v<std::ratio<12, 13>, std::ratio<11, 12>>);
 
    if constexpr (std::ratio_greater_v<std::ratio<12, 13>, std::ratio<11, 12>>)
        std::cout << "12/13 > 11/12" "\n";
}

Output:

11/12 > 10/11
12/13 > 11/12

[edit] See also

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