std::ratio_divide(3) C++ Standard Libary std::ratio_divide(3) NAME std::ratio_divide - std::ratio_divide Synopsis Defined in header <ratio> template< class R1, class R2 > (since C++11) using ratio_divide = /* see below */; The alias template std::ratio_divide denotes the result of dividing two exact rational fractions represented by the std::ratio specializations R1 and R2. The result is a std::ratio specialization std::ratio<U, V>, such that given Num == R1::num * R2::den and Denom == R1::den * R2::num (computed without arithmetic overflow), U is std::ratio<Num, Denom>::num and V is std::ratio<Num, De- nom>::den. Notes If U or V is not representable in std::intmax_t, the program is ill- formed. If Num or Denom is not representable in std::intmax_t, the program is ill- formed unless the implementation yields correct values for U and V. The above definition requires that the result of std::ratio_divide<R1, R2> be already reduced to lowest terms; for example, std::ratio_divide<std::ra- tio<1, 12>, std::ratio<1, 6>> is the same type as std::ratio<1, 2>. Example // Run this code #include <iostream> #include <ratio> int main() { using two_third = std::ratio<2, 3>; using one_sixth = std::ratio<1, 6>; using quotient = std::ratio_divide<two_third, one_sixth>; static_assert(std::ratio_equal_v<quotient, std::ratio<0B100, 0X001>>); std::cout << "(2/3) / (1/6) = " << quotient::num << '/' << quo- tient::den << '\n'; } Output: (2/3) / (1/6) = 4/1 See also ratio_multiply multiplies two ratio objects at compile-time (C++11) (alias template) http://cppreference.com 2024.06.10 std::ratio_divide(3)
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