std::ratio_greater_equal
Defined in header <ratio> |
||
|---|---|---|
|
(since C++11) |
If the ratio R1 is greater than or equal to the ratio R2, provides the member constant value equal true. Otherwise, value is false.
Helper variable template
|
(since C++17) |
Inherited from std::integral_constant
Member constants
|
value
[static]
|
true if R1::num * R2::den >= R2::num * R1::den, or equivalent expression that avoids overflow, false otherwise (public static member constant) |
Member functions
|
operator bool
|
converts the object to bool, returns value (public member function) |
|
operator()
(C++14)
|
returns value (public member function) |
Member types
| Type | Definition |
|---|---|
value_type |
bool |
type |
std::integral_constant<bool, value> |
Example
#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 >= 999'999/1'000'000See also
|
(C++11)
|
compares two ratio objects for equality at compile-time (class template) |
|
(C++11)
|
compares two ratio objects for less than at compile-time (class template) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
https://en.cppreference.com/w/cpp/numeric/ratio/ratio_greater_equal