std::ratio_less (3) - Linux Manuals

std::ratio_less: std::ratio_less

NAME

std::ratio_less - std::ratio_less

Synopsis

Defined in header <ratio>
template< class R1, class R2 > (since C++11)
struct ratio_less : std::integral_constant;

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

Helper variable template

template< class R1, class R2 > (since C++17)
inline constexpr bool ratio_less_v = ratio_less<R1, R2>::value;

Inherited from std::integral_constant

Member constants

value true if R1::num * R2::den < R2::num * R1::den, or equivalent expression that avoids overflow , false otherwise
         (public static member constant)
[static]

Member functions

              converts the object to bool, returns value
operator bool (public member function)

operator() returns value
              (public member function)
(C++14)

Member types

Type Definition
value_type bool
type std::integral_constant<bool, value>

Example

// Run this code

  #include <iostream>
  #include <ratio>

  int main()
  {
      if (std::ratio_less<std::ratio<23,37>, std::ratio<57,90>>::value) {
          std::cout << "23/37 < 57/90\n";
      }
  }

Output:

  23/37 < 57/90