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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)
NAME | Synopsis | Member constants | Member functions | Member types | Example | Output: | See also
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