Espacios de nombres
Variantes
Acciones

std::nan, std::nanf, std::nanl

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< cpp‎ | numeric‎ | math
 
 
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
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Funciones matemáticas comunes
Funciones
Original:
Functions
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Operaciones básicas
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Basic operations
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nannanfnanl
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Funciones exponenciales
Original:
Exponential functions
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Funciones de energía
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Power functions
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Funciones trigonométricas e hiperbólicas
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Trigonometric and hyperbolic functions
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Error gamma y funciones
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Error and gamma functions
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Más cerca de las operaciones con enteros en coma flotante
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Nearest integer floating point operations
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Funciones de punto flotante de manipulación
Original:
Floating point manipulation functions
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Clasificación / Comparación
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Classification/Comparison
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Constantes Macro
Original:
Macro constants
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Definido en la cabecera <cmath>
float nanf( const char* arg );
(desde C++11)
double nan( const char* arg );
(desde C++11)
long double nanl( const char* arg );
(desde C++11)
Convierte el definido por la implantación arg cadena de caracteres en el valor correspondiente tranquilo NaN. El std::nan("string") llamada es equivalente a la std::strtod("NAN(string)", (char**)NULL); llamada .
Original:
Converts the implementation-defined character string arg into the corresponding quiet NaN value. The call std::nan("string") is equivalent to the call std::strtod("NAN(string)", (char**)NULL);.
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[editar] Parámetros

arg -
cadena de caracteres estrecho identificar el contenido de un NaN, o una cadena vacía
Original:
narrow character string identifying the contents of a NaN, or an empty string
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[editar] Valor de retorno

El valor NaN correspondiente a la arg cadena que identifica o cero si la aplicación no es compatible con NaNs tranquilas .
Original:
The NaN value that corresponds to the identifying string arg or zero if the implementation does not support quiet NaNs.
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[editar] Ver también

(C++11)
Comprueba si el número dado es NaN
Original:
checks if the given number is NaN
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(función) [editar]
[estático]
devuelve un valor NaN tranquilo de lo dado tipo de punto flotante
Original:
returns a quiet NaN value of the given floating-point type
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(función miembro público estático de std::numeric_limits) [editar]