std::ratio_equal - cppreference.com

De cppreference.com

Definido no cabeçalho `<ratio>`

`template< class R1, class R2 > struct ratio_equal : std::integral_constant;`

Se as taxas de R1 e R2 são iguais, proporciona o membro constante value true igual. Caso contrário, é value false.

Original:

If the ratios R1 and R2 are equal, provides the member constant value equal true. Otherwise, value is false.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Herdado de std::integral_constant

Member constants


	`true` se `R1::num == R2::num && R1::den == R2::den` , `false` contrário Original: `true` if `R1::num == R2::num && R1::den == R2::den` , `false` otherwise The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (membro estático público constante)

Member functions


	converte o objeto em `bool`, retorna `value` Original: converts the object to `bool`, returns `value` The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função pública membro)

Member types


Tipo Original: Type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Definition

`value_type`	`bool`

`type`	`std::integral_constant<bool, value>`

Possível implementação

template< class R1, class R2 >
struct ratio_equal : public std::integral_constant <
                                 bool,
                                 R1::num == R2::num && R1::den == R2::den
                            > {};

Exemplo

#include <iostream>
#include <ratio>

int main()
{
    if(std::ratio_equal<std::ratio<2,3>, std::ratio<4,6>>::value) {
        std::cout << "2/3 == 4/6\n";
    } else {
        std::cout << "2/3 != 4/6\n";
    }
}

Saída: