Espaços nominais
Variantes
Acções

scalbn, scalbln

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< c‎ | numeric‎ | math

 
 
 
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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remainder(C99)
remquo(C99)
fma(C99)
fmax(C99)
fmin(C99)
fdim(C99)
nan
nanf
nanl
(C99)
(C99)
(C99)
Funções exponenciais
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Exponential functions
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exp
exp2(C99)
expm1(C99)
log
log10
log1p(C99)
log2(C99)
Funções de poder
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Power functions
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sqrt
cbrt(C99)
hypot(C99)
pow
Funções trigonométricas e hiperbólicas
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Trigonometric and hyperbolic functions
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sinh
cosh
tanh
asinh(C99)
acosh(C99)
atanh(C99)
Erro e funções gamma
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Error and gamma functions
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erf(C99)
erfc(C99)
lgamma(C99)
tgamma(C99)
Número inteiro mais próximo de operações de ponto flutuante
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Nearest integer floating point operations
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ceil
floor
round
lround
llround
(C99)
(C99)
(C99)
trunc(C99)
nearbyint(C99)
rint
lrint
llrint
(C99)
(C99)
(C99)
Flutuando funções de manipulação de pontos
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Floating point manipulation functions
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ldexp
scalbn
scalbln
(C99)
(C99)
ilogb(C99)
logb(C99)
Classificação
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Classification
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fpclassify(C99)
isfinite(C99)
isinf(C99)
isnan(C99)
isnormal(C99)
signbit(C99)
Constantes de macros
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Macro constants
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Defined in header <cmath>
float       scalbnf( float x, int exp );
double      scalbn( double x, int exp );
long double scalbnl( long double x, int exp );
float       scalblnf( float x, long exp );
double      scalbln( double x, long exp );
long double scalblnl( long double x, long exp );
Multiplica um valor de ponto flutuante por x FLT_RADIX aumentado para exp poder. No sistema binário é equivalente a ldexp().
Original:
Multiplies an floating point value x by FLT_RADIX raised to power exp. On binary system it is equivalent to ldexp().
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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

Retorna x×FLT_RADIXexp.
Original:
Returns x×FLT_RADIXexp.
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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]
multiplica um número por 2 elevado a uma potência
Original:
multiplies a number by 2 raised to a power
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(função) [edit]