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std::ldexp

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< cpp‎ | numeric‎ | math

 
 
Numéricos biblioteca
Funciones matemáticas comunes
Floating-point medio ambiente
Los números complejos
Matrices numéricas
Pseudo-aleatoria de generación de números
En tiempo de compilación aritmética racional (C++11)
Genéricos operaciones numéricas
Original:
Generic numeric operations
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Funciones matemáticas comunes
Funciones
Original:
Functions
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Operaciones básicas
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Basic operations
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Funciones exponenciales
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Exponential functions
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Funciones de energía
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Power functions
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Funciones trigonométricas e hiperbólicas
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Trigonometric and hyperbolic functions
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Error gamma y funciones
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Error and gamma functions
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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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Funciones de punto flotante de manipulación
Original:
Floating point manipulation functions
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ldexp
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Clasificación / Comparación
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Classification/Comparison
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Constantes Macro
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Macro constants
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Definido en la cabecera <cmath>
float       ldexp( float arg, int exp );
double      ldexp( double arg, int exp );
long double ldexp( long double arg, int exp );
double      ldexp( Integral arg, int exp );
(desde C++11)
Multiplica un valor de punto flotante arg por 2 elevado a la potencia exp .
Original:
Multiplies an floating point value arg by 2 raised to power exp.
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[editar] Parámetros

arg -
flotando valor en puntos
Original:
floating point value
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exp -
valor entero
Original:
integer value
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[editar] Valor de retorno

vuelve x×2exp
Original:
returns x×2exp
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Si el resultado es demasiado grande para el tipo subyacente, se produce error de rango y devuelve HUGE_VAL .
Original:
If the result is too large for the underlying type, range error occurs and HUGE_VAL is returned.
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[editar] Ver también

se descompone un número en mantisa y una potencia de 2
Original:
decomposes a number into significand and a power of 2
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(función) [editar]
(C++11)(C++11)
multiplica un número por FLT_RADIX elevado a una potencia
Original:
multiplies a number by FLT_RADIX raised to a power
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(función) [editar]