scalbn, scalbln

 

C

Idioma

Escriba apoyo

Gestión de memoria dinámica

Gestión de errores

Programa de servicios públicos

Fecha y hora de los servicios públicos

Strings biblioteca

Algoritmos

Numéricos

Entrada / salida de apoyo

Localización de apoyo

Tema de ayuda (C11)

Operaciones atómicas (C11)

 

Numéricos

Funciones matemáticas comunes

Floating-point medio ambiente

Complex number arithmetics

Generación de números aleatorios

De tipo genérico matemáticas

 

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 labs llabs imaxabs (C99) fabs div ldiv lldiv imaxdiv (C99) fmod	remainder (C99) remquo (C99) fma (C99) fmax (C99) fmin (C99) fdim (C99) nan nanf nanl (C99) (C99) (C99)
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 (C99) expm1 (C99)	log log10 log1p (C99) log2 (C99)
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 (C99)	hypot (C99) 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 (C99) acosh (C99) atanh (C99)
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 (C99) erfc (C99)	lgamma (C99) tgamma (C99)
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 (C99) (C99) (C99)	trunc (C99) nearbyint (C99) rint lrint llrint (C99) (C99) (C99)
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 (C99) (C99) ilogb (C99) logb (C99)	frexp modf nextafter nexttoward (C99) (C99) copysign (C99)
Clasificación Original: Classification The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
fpclassify (C99)
isfinite (C99)
isinf (C99)
isnan (C99)
isnormal (C99)
signbit (C99)
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 (C99) (C99)	FP_NORMAL FP_SUBNORMAL FP_ZERO FP_INFINITE FP_NAN (C99) (C99) (C99) (C99) (C99)

 

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 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

Devoluciones 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)
C++ documentation for scalbn