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std::ratio_less(3) C++ Standard Libary std::ratio_less(3) NAME std::ratio_less - std::ratio_less Synopsis Defined in header <ratio> template< class R1, class R2 > struct ratio_less : std::integral_constant<bool, /* see below */> { (since C++11) }; If the ratio R1 is less than the ratio R2, provides the member con- stant 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() { using x = std::ratio<69, 90>; using y = std::ratio<70, 90>; if constexpr (std::ratio_less_v<x, y>) std::cout << x::num << '/' << x::den << " < " << y::num << '/' << y::den << '\n'; } Output: 23/30 < 7/9 See also ratio_greater compares two ratio objects for greater than at com- pile-time (C++11) (class template) http://cppreference.com 2024.06.10 std::ratio_less(3)
NAME | Synopsis | Member constants | Member functions | Member types | Example | Output: | See also
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