Espaços nominais
Variantes
Acções

std::expm1

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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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expm1
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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       expm1( float arg );
 (desde C++11)
double      expm1( double arg );
 (desde C++11)
long double expm1( long double arg );
 (desde C++11)
double      expm1( Integral arg );
 (desde C++11)
Calcula a e (número de Euler, 2.7182818) elevado à arg poder dado, menos 1. Esta função é mais preciso do que a expressão std::exp(arg)-1 se arg está perto de zero.
Original:
Computes the e (Euler's number, 2.7182818) raised to the given power arg, minus 1. This function is more accurate than the expression std::exp(arg)-1 if arg is close to zero.
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[editar] Parâmetros

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

earg
-1

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
retorna e elevado à potência dada (ex)
Original:
returns e raised to the given power (ex)
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(função) [edit]
(C++11)
logaritmo natural (a base e) de 1 mais o número dado
Original:
natural logarithm (to base e) of 1 plus the given number
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(função) [edit]
(C++11)
retorna 2 elevado à potência dada (2x)
Original:
returns 2 raised to the given power (2x)
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(função) [edit]
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