std::scalbn, std::scalbln

 

C++

Lenguaje

Cabeceras

Conceptos

Biblioteca de utilidades

Biblioteca de cadenas

Biblioteca de contenedores

Biblioteca de algoritmos

Biblioteca de iteradores

Biblioteca numérica

Biblioteca de entrada/salida

Biblioteca de localización

Biblioteca de expresiones regulares (C++11)

Biblioteca de operaciones atómicas (C++11)

Biblioteca de tareas/subprocesos (C++11)

 

Numéricos biblioteca

Funciones matemáticas comunes

Floating-point medio ambiente

Los números complejos

Matrices numéricas

Pseudo-aleatoria de generación de números

En tiempo de compilación aritmética racional (C++11)

Genéricos operaciones 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

 

Funciones matemáticas comunes

Funciones Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Operaciones 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)
Funciones exponenciales 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)
Funciones de energía 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
Funciones 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)

Error gamma y funciones 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)
Más cerca de las operaciones con enteros en coma flotante 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)
Funciones de punto flotante de manipulación 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)
Clasificación / Comparación 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 Macro 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>
float       scalbn( float x, int exp );		(desde C++11)
double      scalbn( double x, int exp );		(desde C++11)
long double scalbn( long double x, int exp );		(desde C++11)
double      scalbn( Integral x, int exp );		(desde C++11)
float       scalbln( float x, long exp );		(desde C++11)
double      scalbln( double x, long exp );		(desde C++11)
long double scalbln( long double x, long exp );		(desde C++11)
double      scalbln( Integral x, long exp );		(desde C++11)

Multiplica un valor de punto flotante por x FLT_RADIX elevado a exp poder. El sistema binario es 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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Parámetros

arg	-	flotando valor en puntos 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.
exp	-	valor entero Original: integer 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

vuelve x×FLT_RADIXexp

Original:

returns x×FLT_RADIXexp

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Si el resultado es demasiado grande para el tipo subyacente, se produce error de rango y devuelve HUGE_VAL .

Original:

If the result is too large for the underlying type, range error occurs and HUGE_VAL is returned.

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Ver también

frexp	se descompone un número en mantisa y una potencia de 2 Original: decomposes a number into significand and a power of 2 The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función)
ldexp	multiplica un número por 2 elevado a una potencia Original: multiplies a number by 2 raised to a power The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función)