Espaços nominais
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std::remquo

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< cpp‎ | numeric‎ | math

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C++
 
Biblioteca numéricos
Funções matemáticas comuns
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Tempo de compilação aritmética racional (C++11)
Genéricos operações numéricas
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Generic numeric operations
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Funções matemáticas comuns
Funções
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Functions
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Operações básicas
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Basic operations
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remquo
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Funções exponenciais
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Exponential functions
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Funções de poder
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Power functions
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Funções trigonométricas e hiperbólicas
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Trigonometric and hyperbolic functions
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Erro e funções gamma
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Error and gamma functions
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Número inteiro mais próximo de operações de ponto flutuante
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Nearest integer floating point operations
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Flutuando funções de manipulação de pontos
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Floating point manipulation functions
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Classificação / Comparação
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Classification/Comparison
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Constantes de macros
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Macro constants
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Definido no cabeçalho <cmath>
float       remquo( float x, float y, int *quo );
 (1) (desde C++11)
double      remquo( double x, double y, int *quo );
 (2) (desde C++11)
long double remquo( long double x, long double y, int *quo );
 (3) (desde C++11)
Promoted    remquo( Arithmetic x, Arithmetic y, int *quo );
 (4) (desde C++11)
Calcula o resto da operação de ponto flutuante x/y divisão como a função remainder faz. Além disso, o sinal, e, pelo menos, três dos últimos bits de x/y serão armazenados em quo.
Original:
Computes the remainder of the floating point division operation x/y as the remainder function does. Additionally, the sign and at least the three of the last bits of x/y will be stored in quo.
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4)
Se algum argumento tem tipo integral, ele é convertido para double. Se qualquer outro argumento é long double, em seguida, o tipo de retorno é long double, caso contrário é double
Original:
If any argument has integral type, it is cast to double. If any other argument is long double, then the return type is long double, otherwise it is double
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Índice

[editar] Parâmetros

x, y -
valores de ponto flutuante
Original:
floating point values
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quo -
ponteiro para um inteiro.. valor de armazenamento de alguns bits de x/y pol
Original:
pointer to an integer value to store some bits of x/y in
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[editar] Valor de retorno

restante argumentos divisórias
Original:
remainder of dividing arguments
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[editar] Notas

Esta função é útil quando a implementação de funções periódicas com o período exatamente representável como um valor de ponto flutuante: ao calcular sin(πx) para um x muito grande, chamando std::sin diretamente pode resultar em um grande erro, mas se o argumento da função é primeiro reduzido com std::remquo, os bits de baixa ordem do quociente pode ser usado para determinar o sinal e a parte restante pode ser usado para calcular o valor com alta precisão.
Original:
This function is useful when implementing periodic functions with the period exactly representable as a floating-point value: when calculating sin(πx) for a very large x, calling std::sin directly may result in a large error, but if the function argument is first reduced with std::remquo, the low-order bits of the quotient may be used to determine the sign and the remainder may be used to calculate the value with high precision.
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[editar] Veja também

(C++11)
assinado restante da operação de divisão
Original:
signed remainder of the division operation
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(função) [edit]
restante da operação de ponto flutuante de divisão
Original:
remainder of the floating point division operation
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(função) [edit]



(C++11)
o quociente eo resto da divisão inteira
Original:
the quotient and remainder of integer division
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(função) [edit]
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