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std::ldexp

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< cpp‎ | numeric‎ | math

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C++
 
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
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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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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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ldexp
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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       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 um arg valor de ponto flutuante por 2 elevado à potência exp.
Original:
Multiplies an floating point value arg by 2 raised to power exp.
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[editar] Parâmetros

arg -
flutuando valor de ponto
Original:
floating point value
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exp -
valor inteiro
Original:
integer value
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[editar] Valor de retorno

x×2exp retornos
Original:
returns x×2exp
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Se o resultado é muito grande para o tipo de base, o erro ocorre gama e HUGE_VAL é retornado.
Original:
If the result is too large for the underlying type, range error occurs and HUGE_VAL is returned.
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[editar] Veja também
decompõe um número em significand e um poder de 2
Original:
decomposes a number into significand and a power of 2
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(função) [edit]
(C++11)
(C++11)
multiplica um número por FLT_RADIX elevado a uma potência
Original:
multiplies a number by FLT_RADIX raised to a power
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(função) [edit]
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