Espaços nominais
Variantes
Acções

std::ratio

Da cppreference.com
< cpp‎ | numeric‎ | ratio

 
 
Biblioteca numéricos
Funções matemáticas comuns
De ponto flutuante ambiente
Números complexos
Matrizes numéricas
Pseudo-aleatório de geração de números
Tempo de compilação aritmética racional (C++11)
Genéricos operações numéricas
Original:
Generic numeric operations
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iota(C++11)
accumulate
inner_product
adjacent_difference
partial_sum
 
Compilar hora aritmética racional
ratio(C++11)
Aritmética
Original:
Arithmetic
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ratio_add(C++11)
ratio_subtract(C++11)
ratio_multiply(C++11)
ratio_divide(C++11)
Comparação
Original:
Comparison
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ratio_equal(C++11)
ratio_not_equal(C++11)
ratio_less(C++11)
ratio_less_equal(C++11)
ratio_greater(C++11)
ratio_greater_equal(C++11)
 
Defined in header <ratio>
template<

    std::intmax_t Num,
    std::intmax_t Denom = 1

> class ratio;
(a partir do C++ 11)

The class template std::ratio provides compile-time rational arithmetic support. Each instantiation of this template exactly represents any finite rational number as long as its numerator Num and denominator Denom are representable as compile-time constants of type std::intmax_t. In addition, Denom may not be zero and may not be equal to the most negative value. Both numerator and denominator are automatically reduced to the lowest terms.

Typedefs conveniência vários que correspondem aos índices de SI são fornecidos pela biblioteca padrão:
Original:
Several convenience typedefs that correspond to the SI ratios are provided by the standard library:
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Defined in header <ratio>
Tipo
Original:
Type
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Definition
yocto
std::ratio<1, 1000000000000000000000000>, se std::intmax_t pode representar o denominador
Original:
std::ratio<1, 1000000000000000000000000>, if std::intmax_t can represent the denominator
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zepto
std::ratio<1, 1000000000000000000000>, se std::intmax_t pode representar o denominador
Original:
std::ratio<1, 1000000000000000000000>, if std::intmax_t can represent the denominator
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atto std::ratio<1, 1000000000000000000>
femto std::ratio<1, 1000000000000000>
pico std::ratio<1, 1000000000000>
nano std::ratio<1, 1000000000>
micro std::ratio<1, 1000000>
milli std::ratio<1, 1000>
centi std::ratio<1, 100>
deci std::ratio<1, 10>
deca std::ratio<10, 1>
hecto std::ratio<100, 1>
kilo std::ratio<1000, 1>
mega std::ratio<1000000, 1>
giga std::ratio<1000000000, 1>
tera std::ratio<1000000000000, 1>
peta std::ratio<1000000000000000, 1>
exa std::ratio<1000000000000000000, 1>
zetta
std::ratio<1000000000000000000000, 1>, se std::intmax_t pode representar o numerador
Original:
std::ratio<1000000000000000000000, 1>, if std::intmax_t can represent the numerator
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yotta
std::ratio<1000000000000000000000000, 1>, se std::intmax_t pode representar o numerador
Original:
std::ratio<1000000000000000000000000, 1>, if std::intmax_t can represent the numerator
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[editar] Tipos de membro

Tipo de membro
Original:
Member type
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Definition
type std::ratio<num, den>

[editar] Objetos Membros

constexpr intmax_t 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)
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(membro estático público constante)
constexpr intmax_t 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)
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(membro estático público constante)