Espaços nominais
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std::pow

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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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pow
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       pow( float base, float exp );
 (1)
double      pow( double base, double exp );
 (2)
long double pow( long double base, long double exp );
 (3)
Promoted    pow( Arithmetic base, Arithmetic exp );
 (4) (desde C++11)
float       pow( float base, int iexp );
 (5) (até C++11)
double      pow( double base, int iexp );
 (6) (até C++11)
long double pow( long double base, int iexp );
 (7) (até C++11)
Calcula o valor de base elevado à potência exp ou iexp.
Original:
Computes the value of base raised to the power exp or iexp.
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4)
Um conjunto de sobrecargas ou um modelo de função para todas as combinações de argumentos do tipo aritmética não cobertos por 1-3). Se algum argumento tem tipo integral, ele é convertido para double. Se algum argumento é long double, então o Promoted tipo de retorno é também long double, caso contrário, o tipo de retorno é sempre double.
Original:
A set of overloads or a function template for all combinations of arguments of arithmetic type not covered by 1-3). If any argument has integral type, it is cast to double. If any argument is long double, then the return type Promoted is also long double, otherwise the return type is always double.
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Índice

[editar] Parâmetros

base -
base como valor de ponto flutuante
Original:
base as floating point value
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exp -
expoente como valor de ponto flutuante
Original:
exponent as floating point value
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iexp -
expoente como valor inteiro
Original:
exponent as integer value
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[editar] Valor de retorno

base levantada pela corrente (ou exp iexp).
Original:
base raised by power (exp or iexp).
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Domínio de erro ocorre se base é 0 e exp é inferior ou igual a ​0​. NAN é devolvido em caso.
Original:
Domain error occurs if base is 0 and exp is less than or equal to ​0​. NAN is returned in that case.
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Domínio de erro ocorre se base é negativo e exp não é um valor inteiro. NAN é devolvido em caso.
Original:
Domain error occurs if base is negative and exp is not an integer value. NAN is returned in that case.
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Faixa de erro ocorre se um estouro ocorre. HUGEVAL é devolvido em caso.
Original:
Range error occurs if an overflow takes place. HUGEVAL is returned in that case.
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[editar] Notas

pow(float, int) retornos float até C + 11 (por sobrecarga 5), ​​mas retorna double desde C + 11 (por sobrecarga 4)
Original:
pow(float, int) returns float until C++11 (per overload 5) but returns double since C++11 (per overload 4)
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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]
calcula natural (base e) logaritmo (de base e) (ln(x))
Original:
computes natural (base e) logarithm (to base e) (ln(x))
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(função) [edit]
Calcula a raiz quadrada (√x)
Original:
computes square root (√x)
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(função) [edit]
(C++11)
Calcula a raiz cúbica (3√x)
Original:
computes cubic root (3√x)
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(função) [edit]
potência complexa, um ou ambos os argumentos pode ser um número complexo
Original:
complex power, one or both arguments may be a complex number
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(modelo de função) [edit]
aplica-se a função de dois std::pow valarrays ou um valarray e um valor
Original:
applies the function std::pow to two valarrays or a valarray and a value
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(modelo de função) [edit]
Obtida de "https://pt.cppreference.com/mwiki/index.php?title=cpp/numeric/math/pow&oldid=21277"