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std::remquo

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< cpp‎ | numeric‎ | math

 
 
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En tiempo de compilación aritmética racional (C++11)
Genéricos operaciones numéricas
Original:
Generic numeric operations
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iota(C++11)
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Funciones matemáticas comunes
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Functions
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Operaciones básicas
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Basic operations
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remainder(C++11)
remquo(C++11)
fma(C++11)
fmax(C++11)
fmin(C++11)
fdim(C++11)
nan
nanf
nanl
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Exponential functions
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Funciones de energía
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Más cerca de las operaciones con enteros en coma flotante
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Nearest integer floating point operations
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isfinite(C++11)
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signbit(C++11)
isgreater(C++11)
isgreaterequal(C++11)
isless(C++11)
islessequal(C++11)
islessgreater(C++11)
isunordered(C++11)
Constantes Macro
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Macro constants
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FP_NORMAL
FP_SUBNORMAL
FP_ZERO
FP_INFINITE
FP_NAN
(C++11)
(C++11)
(C++11)
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(C++11)
 
Defined in header <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)
pulg. Calcula el resto de la operación de punto flotante x/y división como la función remainder hace. Además, la señal y al menos tres de los últimos bits de x/y se almacenarán en 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)
Si algún argumento es de tipo integral, que se convierte en double. Si cualquier otro argumento es long double, entonces el tipo de retorno es long double, de lo contrario es 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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Contenido

[editar] Parámetros

x, y -
valores de punto flotante
Original:
floating point values
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quo -
puntero a un entero.. valor para almacenar algunos bits de x/y
Original:
pointer to an integer value to store some bits of x/y in
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[editar] Valor de retorno

resto de los argumentos que se dividen
Original:
remainder of dividing arguments
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[editar] Notas

Esta función es útil cuando la aplicación de funciones periódicas con el período exactamente representable como un valor de coma flotante: en el cálculo de sin(πx) para un x muy grande, llamando directamente std::sin puede resultar en un error grande, pero si el argumento de la función se reduce primero con std::remquo, los bits de orden bajo del cociente puede ser utilizado para determinar el signo y el resto puede ser usado para calcular el valor con alta precisión .
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] Ver también

(C++11)
firmado resto de la operación de división
Original:
signed remainder of the division operation
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(función) [edit]
resto de la operación de división de punto flotante
Original:
remainder of the floating point division operation
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(función) [edit]
el cociente y el resto de la división entera
Original:
the quotient and remainder of integer division
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(función) [edit]