std::exp2

 

C++

Linguagem

Conceitos

Biblioteca de utilitários

Biblioteca cordas

Recipientes biblioteca

Biblioteca algoritmos

Biblioteca iteradores

Biblioteca numéricos

De entrada / saída da biblioteca

Biblioteca localizações

Biblioteca de expressões regulares (C++11)

Biblioteca operações atômica (C++11)

Biblioteca de suporte a discussão (C++11)

 

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 Original: Generic numeric operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

iota (C++11)

accumulate

inner_product

adjacent_difference

partial_sum

 

Funções matemáticas comuns

Funções Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Operações básicas Original: Basic operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
abs(int) labs llabs imaxabs (C++11) abs(float) fabs div ldiv lldiv imaxdiv (C++11) fmod	remainder (C++11) remquo (C++11) fma (C++11) fmax (C++11) fmin (C++11) fdim (C++11) nan nanf nanl (C++11) (C++11) (C++11)
Funções exponenciais Original: Exponential functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
exp exp2 (C++11) expm1 (C++11)	log log10 log1p (C++11) log2 (C++11)
Funções de poder Original: Power functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
sqrt cbrt (C++11)	hypot (C++11) pow
Funções trigonométricas e hiperbólicas Original: Trigonometric and hyperbolic functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
sin cos tan asin acos atan atan2	sinh cosh tanh asinh (C++11) acosh (C++11) atanh (C++11)

Erro e funções gamma Original: Error and gamma functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
erf (C++11) erfc (C++11)	lgamma (C++11) tgamma (C++11)
Número inteiro mais próximo de operações de ponto flutuante Original: Nearest integer floating point operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ceil floor round lround llround (C++11) (C++11) (C++11)	trunc (C++11) nearbyint (C++11) rint lrint llrint (C++11) (C++11) (C++11)
Flutuando funções de manipulação de pontos Original: Floating point manipulation functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ldexp scalbn scalbln (C++11) (C++11) ilogb (C++11) logb (C++11)	frexp modf nextafter nexttoward (C++11) (C++11) copysign (C++11)
Classificação / Comparação Original: Classification/Comparison The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
fpclassify (C++11) isfinite (C++11) isinf (C++11) isnan (C++11) isnormal (C++11) signbit (C++11)	isgreater (C++11) isgreaterequal (C++11) isless (C++11) islessequal (C++11) islessgreater (C++11) isunordered (C++11)
Constantes de macros Original: Macro constants The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
HUGE_VALF HUGE_VAL HUGE_VALL (C++11) (C++11) INFINITY (C++11) NAN (C++11) math_errhandling MATH_ERRNO MATH_ERREXCEPT (C++11)	FP_NORMAL FP_SUBNORMAL FP_ZERO FP_INFINITE FP_NAN (C++11) (C++11) (C++11) (C++11) (C++11)

 

Defined in header <cmath>
double      exp2( double n );		(a partir do C++ 11)
float       exp2( float n );		(a partir do C++ 11)
long double exp2( long double n );		(a partir do C++ 11)
double      exp2( Integral n );		(a partir do C++ 11)

Calcula 2 elevado à n poder dado

Original:

Computes 2 raised to the given power n

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Parâmetros

n

-

flutuando valor de ponto Original: floating point value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valor de retorno

2 elevado à n (i.e. 2n)

Original:

2 raised to the n (i.e. 2n)

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

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.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Veja também

exp	retorna e elevado à potência dada (ex) Original: returns e raised to the given power (ex) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
log2 (C++11)	logaritmo base 2 do número dado Original: base 2 logarithm of the given number The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
log	calcula natural (base e) logaritmo (de base e) (ln(x)) Original: computes natural (base e) logarithm (to base e) (ln(x)) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
pow	levanta uma série para o poder dado (xy) Original: raises a number to the given power (xy) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)