Espacios de nombres
Variantes

    nan, nanf, nanl

    De cppreference.com
    < c | numeric | math

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    C
     
    Números
     
    Funciones matemáticas comunes
    Funciones
    Original:
    Functions
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    Operaciones básicas
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    Basic operations
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    (C99)(C99)(C99)
    Funciones exponenciales
    Original:
    Exponential functions
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    Funciones de energía
    Original:
    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
    Original:
    Error and gamma functions
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    Más cerca de las operaciones con enteros en coma flotante
    Original:
    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
    Original:
    Classification
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    Constantes Macro
    Original:
    Macro constants
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    Definido en el archivo de encabezado <math.h> 
    float       nanf( const char* arg );
    		(desde C99) 
    double      nan( const char* arg );
    		(desde C99) 
    long double nanl( const char* arg );
    		(desde C99)
    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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    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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    Valor de retorno

    El valor NaN que corresponde a la cadena de identificación arg o cero si la implemntation no es compatible con NaNs tranquilas .
    Original:
    The NaN value that corresponds to the identifying string arg or zero if the implemntation does not support quiet NaNs.
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    Ver también

    (C99)
    Comprueba si el número dado es NaN
    Original:
    checks if the given number is NaN
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    (función) [editar]
    Documentación de C++ para nan
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