std::ratio_subtract
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<tbody> </tbody>| Definido no cabeçalho <ratio>
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template< class R1, class R2 > using ratio_subtract = /* unspecified */; |
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Alias modelo
std::ratio_subtract denota o resultado da subtração de duas frações exatas racionais representados pelas instâncias std::ratio R1 e R2. std::ratio O resultado de um exemplo std::ratio<Num, Denom> onde Num == R1::num * R2::den - R2::num * R1::den e Denom == R1::den * R2::den.Original:
The template alias
std::ratio_subtract denotes the result of subtracting two exact rational fractions represented by the std::ratio instances R1 and R2. The result a std::ratio instance std::ratio<Num, Denom> where Num == R1::num * R2::den - R2::num * R1::den and Denom == R1::den * R2::den.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Tipos de membro
Tipo de membro
Original: Member type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Definition |
type
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std::ratio<num, den>
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Constantes de membros
num [estática] |
constexpr valor do tipo std::intmax_t igual sign(Num) * sign(Denom) * abs(Num) / gcd(Num, Denom) Original: constexpr value of type std::intmax_t equal to sign(Num) * sign(Denom) * abs(Num) / gcd(Num, Denom) 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) |
den [estática] |
constexpr valor do tipo std::intmax_t igual abs(Denom) / gcd(Num, Denom) Original: constexpr value of type std::intmax_t equal to abs(Denom) / gcd(Num, Denom) 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) |
Exemplo
#include <iostream>
#include <ratio>
int main()
{
typedef std::ratio<2, 3> two_third;
typedef std::ratio<1, 6> one_sixth;
typedef std::ratio_subtract<two_third, one_sixth> diff;
std::cout << "2/3 - 1/6 = " << diff::num << '/' << diff::den << '\n';
}
Saída:
2/3 - 1/6 = 1/2