Espacios de nombres
Variantes
Acciones

std::numeric_limits

De cppreference.com

This page has been machine-translated from the English version of the wiki using Google Translate.

The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here.

Click here for the English version of this page

 
C++
 
Utilidades de la biblioteca
Escriba apoyo (basic types, RTTI, type traits)
Gestión de memoria dinámica
Gestión de errores
Programa de servicios públicos
Funciones variadic
Fecha y hora
Objetos Function
initializer_list(C++11)
bitset
hash(C++11)
Operadores relacionales
Original:
Relational operators
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
Pares y tuplas
Original:
Pairs and tuples
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
pair
tuple(C++11)
piecewise_construct_t(C++11)
piecewise_construct(C++11)
Cambiar, hacia adelante y mover
Original:
Swap, forward and move
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
swap
forward(C++11)
move(C++11)
move_if_noexcept(C++11)
declval(C++11)
 
Escriba apoyo
Tipos básicos
Original:
Basic types
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Tipos fundamentales
Tipos fijos ancho enteros (C++11)
Límites numéricos
Original:
Numeric limits
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
numeric_limits
C numérico limita interfaz
Información de tipo en tiempo de ejecución
Original:
Runtime type information
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Caracteres de tipo
Original:
Type traits
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Categorías primarias de tipo
Original:
Primary type categories
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
is_void(C++11)
is_array(C++11)
is_pointer(C++11)
is_enum(C++11)
is_union(C++11)
is_class(C++11)
is_function(C++11)
is_object(C++11)
is_scalar(C++11)
is_compound(C++11)
is_integral(C++11)
is_floating_point(C++11)
is_fundamental(C++11)
is_arithmetic(C++11)
is_reference(C++11)
is_lvalue_reference(C++11)
is_rvalue_reference(C++11)
is_member_pointer(C++11)
is_member_object_pointer(C++11)
is_member_function_pointer(C++11)
Propiedades de tipo
Original:
Type properties
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
is_const(C++11)
is_volatile(C++11)
is_pod(C++11)
is_empty(C++11)
is_polymorphic(C++11)
is_abstract(C++11)
Operaciones compatibles
Original:
Supported operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
is_constructible
is_trivially_constructible
is_nothrow_constructible		(C++11)
(C++11)
(C++11)
is_default_constructible
is_trivially_default_constructible
is_nothrow_default_constructible		(C++11)
(C++11)
(C++11)
is_copy_constructible
is_trivially_copy_constructible
is_nothrow_copy_constructible		(C++11)
(C++11)
(C++11)
is_move_constructible
is_trivially_move_constructible
is_nothrow_move_constructible		(C++11)
(C++11)
(C++11)
is_assignable
is_trivially_assignable
is_nothrow_assignable		(C++11)
(C++11)
(C++11)
is_copy_assignable
is_trivially_copy_assignable
is_nothrow_copy_assignable		(C++11)
(C++11)
(C++11)
is_move_assignable
is_trivially_move_assignable
is_nothrow_move_assignable		(C++11)
(C++11)
(C++11)
is_destructible
is_trivially_destructible
is_nothrow_destructible		(C++11)
(C++11)
(C++11)
has_virtual_destructor(C++11)
Relaciones y consultas de propiedad
Original:
Relationships and property queries
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
is_same(C++11)
is_base_of(C++11)
is_convertible(C++11)
alignment_of(C++11)
rank(C++11)
extent(C++11)
Modificaciones de tipo
Original:
Type modifications
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
remove_cv
remove_const
remove_volatile		(C++11)
(C++11)
(C++11)
add_cv
add_const
add_volatile		(C++11)
(C++11)
(C++11)
make_signed(C++11)
make_unsigned(C++11)
Transformaciones de tipo
Original:
Type transformations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
aligned_storage(C++11)
aligned_union(C++11)
decay(C++11)
enable_if(C++11)
conditional(C++11)
common_type(C++11)
underlying_type(C++11)
result_of(C++11)
Escriba constantes rasgos
Original:
Type trait constants
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
integral_constant(C++11)
 
std::numeric_limits
Constantes estáticas
Original:
Static constants
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
numeric_limits::is_specialized
numeric_limits::is_signed
numeric_limits::is_integer
numeric_limits::is_exact
numeric_limits::has_infinity
numeric_limits::has_quiet_NaN
numeric_limits::has_signaling_NaN
numeric_limits::has_denorm
numeric_limits::has_denorm_loss
numeric_limits::round_style
numeric_limits::is_iec559
numeric_limits::is_bounded
numeric_limits::is_modulo
numeric_limits::digits
numeric_limits::digits10
numeric_limits::max_digits10(C++11)
numeric_limits::radix
numeric_limits::min_exponent
numeric_limits::min_exponent10
numeric_limits::max_exponent
numeric_limits::max_exponent10
numeric_limits::traps
numeric_limits::tinyness_before
Funciones miembro estáticas
Original:
Static member functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
numeric_limits::min
numeric_limits::lowest(C++11)
numeric_limits::max
numeric_limits::epsilon
numeric_limits::round_error
numeric_limits::infinity
numeric_limits::quiet_NaN
numeric_limits::signaling_NaN
numeric_limits::denorm_min
Tipos ayudante
Original:
Helper types
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
float_round_style
float_denorm_style
 
Defined in header <limits>
template< class T > class numeric_limits;
La plantilla de clase numeric_limits proporciona una forma estandarizada para consultar las distintas propiedades de los tipos fundamentales (por ejemplo, el mayor valor posible para el tipo de int es std::numeric_limits<int>::max()) .
Original:
The numeric_limits class template provides a standardized way to query various properties of fundamental types (e.g. the largest possible value for type int is std::numeric_limits<int>::max()).
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Esta información se proporciona a través de especializaciones de la plantilla numeric_limits. La biblioteca estándar hace especializaciones disponibles para todos los tipos fundamentales:
Original:
This information is provided via specializations of the numeric_limits template. The standard library makes available specializations for all fundamental types:
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Defined in header <limits>
template<> class numeric_limits<bool>;

template<> class numeric_limits<char>;
template<> class numeric_limits<signed char>;
template<> class numeric_limits<unsigned char>;
template<> class numeric_limits<wchar_t>;
template<> class numeric_limits<char16_t>;   // C++11 feature
template<> class numeric_limits<char32_t>;   // C++11 feature
template<> class numeric_limits<short>;
template<> class numeric_limits<unsigned short>;
template<> class numeric_limits<int>;
template<> class numeric_limits<unsigned int>;
template<> class numeric_limits<long>;
template<> class numeric_limits<unsigned long>;
template<> class numeric_limits<long long>;
template<> class numeric_limits<unsigned long long>;
template<> class numeric_limits<float>;
template<> class numeric_limits<double>;

template<> class numeric_limits<long double>;
Además, existe una especialización para cada versión cv calificado de cada tipo fundamental, idéntica a la especialización sin reservas, por ejemplo, std::numeric_limits<const int>, std::numeric_limits<volatile int> y std::numeric_limits<const volatile int> se proporcionan y son equivalentes a std::numeric_limits<int> .
Original:
Additionally, a specialization exists for every cv-qualified version of each fundamental type, identical to the unqualified specialization, e.g. std::numeric_limits<const int>, std::numeric_limits<volatile int>, and std::numeric_limits<const volatile int> are provided and are equivalent to std::numeric_limits<int>.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Los tipos de la biblioteca estándar que son los alias de los tipos fundamentales (como std::size_t std::streamsize o también se puede examinar con los rasgos de tipo std::numeric_limits .
Original:
The standard library types that are aliases of fundamental types (such as std::size_t or std::streamsize may also be examined with the std::numeric_limits type traits.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
implementaciones pueden proporcionar especializaciones de std::numeric_limits para determinados tipos de aplicación: por ejemplo, GCC. Ofrece. std::numeric_limits<__int128> bibliotecas pueden agregar especializaciones para bibliotecarios proporcionados por tipos, por ejemplo, establece OpenEXR std::numeric_limits<half> para un 16-bit de punto flotante tipo .
Original:
Implementations may provide specializations of std::numeric_limits for implementation-specific types: e.g. GCC provides std::numeric_limits<__int128>. Libraries may add specializations for library-provided types, e.g. OpenEXR provides std::numeric_limits<half> for a 16-bit floating-point type.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Contenido

[editar] Constantes de miembros

[estático]
identifica los tipos de std::numeric_limits que está especializada
Original:
identifies types for which std::numeric_limits is specialized
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]
[estático]
identifica los tipos firmados
Original:
identifies signed types
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]
[estático]
identifica los tipos enteros
Original:
identifies integer types
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]
[estático]
identifica los tipos exactos
Original:
identifies exact types
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]
[estático]
identifica tipos de punto flotante que puede representar el valor especial "infinito positivo"
Original:
identifies floating-point types that can represent the special value "positive infinity"
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]
[estático]
identifica tipos de punto flotante que puede representar el valor especial "tranquilo, no un número" (NaN)
Original:
identifies floating-point types that can represent the special value "quiet not-a-number" (NaN)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]
[estático]
identifica tipos de punto flotante que puede representar el valor especial "señalización no un número" (NaN)
Original:
identifies floating-point types that can represent the special value "signaling not-a-number" (NaN)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]
[estático]
identifica el estilo desnormalización utilizado por el tipo de punto flotante
Original:
identifies the denormalization style used by the floating-point type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]
[estático]
 identifies the floating-point types that detect loss of precision as denormalization loss rather than inexact result
(público miembro constante estática) [edit]
[estático]
identifica el estilo de redondeo utilizado por el tipo
Original:
identifies the rounding style used by the type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]
[estático]
identifica los IEC 559/IEEE 754 tipos de punto flotante
Original:
identifies the IEC 559/IEEE 754 floating-point types
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]
[estático]
 identifies types that represent a finite set of values
(público miembro constante estática) [edit]
[estático]
identifica los tipos que manejan se desborda con la aritmética módulo
Original:
identifies types that handle overflows with modulo arithmetic
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]
[estático]
número de dígitos radix que pueden ser representadas sin cambio
Original:
number of radix digits that can be represented without change
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]
[estático]
número de dígitos decimales que pueden ser representadas sin cambio
Original:
number of decimal digits that can be represented without change
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]
[estático] (C++11)
número de dígitos decimales necesarias para diferenciar todos los valores de este tipo
Original:
number of decimal digits necessary to differentiate all values of this type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]
[estático]
la raíz o base entero utilizado por la representación del tipo dado
Original:
the radix or integer base used by the representation of the given type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]
[estático]
más que la menor potencia negativa de la base de que es un válido punto flotante normalizado valor uno
Original:
one more than the smallest negative power of the radix that is a valid normalized 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.

(público miembro constante estática) [edit]
[estático]
la menor potencia negativa de diez que es válida normalizada valor de punto flotante
Original:
the smallest negative power of ten that is a valid normalized 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.

(público miembro constante estática) [edit]
[estático]
mayor que la máxima potencia entera de la base de que es válida finito valor de punto flotante uno
Original:
one more than the largest integer power of the radix that is a valid finite 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.

(público miembro constante estática) [edit]
[estático]
la mayor potencia entera de 10, que es válida finito valor de punto flotante
Original:
the largest integer power of 10 that is a valid finite 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.

(público miembro constante estática) [edit]
[estático]
identifica los tipos que pueden causar operaciones aritméticas para atraparlos
Original:
identifies types which can cause arithmetic operations to trap
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]
[estático]
identifica tipos de punto flotante que detectan tinyness antes de redondeo
Original:
identifies floating-point types that detect tinyness before rounding
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(público miembro constante estática) [edit]

[editar] Las funciones miembro

[estático]
devuelve el menor valor finito del tipo dado
Original:
returns the smallest finite value of the given type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(miembro estático público función) [edit]
[estático] (C++11)
Devuelve el menor valor finito del tipo dado
Original:
returns the lowest finite value of the given type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(miembro estático público función) [edit]
[estático]
devuelve el mayor valor finito del tipo dado
Original:
returns the largest finite value of the given type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(miembro estático público función) [edit]
[estático]
devuelve la diferencia entre 1.0 y el siguiente valor representable de lo dado tipo de punto flotante
Original:
returns the difference between 1.0 and the next representable value of the given floating-point type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(miembro estático público función) [edit]
[estático]
devuelve el error de redondeo máximo de lo dado tipo de punto flotante
Original:
returns the maximum rounding error of the given floating-point type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(miembro estático público función) [edit]
[estático]
devuelve el valor infinito positivo de lo dado tipo de punto flotante
Original:
returns the positive infinity value of the given floating-point type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(miembro estático público función) [edit]
[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
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(miembro estático público función) [edit]
[estático]
devuelve un valor NaN de señalización de lo dado tipo de punto flotante
Original:
returns a signaling NaN value of the given floating-point type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(miembro estático público función) [edit]
[estático]
devuelve el menor valor positivo subnormal de lo dado tipo de punto flotante
Original:
returns the smallest positive subnormal value of the given floating-point type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(miembro estático público función) [edit]

[editar] Clases de ayuda
indica coma flotante modos de redondeo
Original:
indicates floating-point rounding modes
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(enum) [edit]
indica los modos de punto flotante desnormalización
Original:
indicates floating-point denormalization modes
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(enum) [edit]

[editar] Relación con librería de C constantes macro

Specialization Members
min() lowest()
(C++11) 		max() epsilon() digits digits10 min_exponent min_exponent10 max_exponent max_exponent10 radix
numeric_limits< bool > 2
numeric_limits< char > CHAR_MIN CHAR_MIN CHAR_MAX 2
numeric_limits< signed char > SCHAR_MIN SCHAR_MIN SCHAR_MAX 2
numeric_limits< unsigned char > ​0​ ​0​ UCHAR_MAX 2
numeric_limits< wchar_t > WCHAR_MIN WCHAR_MIN WCHAR_MAX 2
numeric_limits< char16_t > ​0​ ​0​ UINT_LEAST16_MAX 2
numeric_limits< char32_t > ​0​ ​0​ UINT_LEAST32_MAX 2
numeric_limits< short > SHRT_MIN SHRT_MIN SHRT_MAX 2
numeric_limits< signed short >
numeric_limits< unsigned short > ​0​ ​0​ USHRT_MAX 2
numeric_limits< int > INT_MIN INT_MIN INT_MAX 2
numeric_limits< signed int >
numeric_limits< unsigned int > ​0​ ​0​ UINT_MAX 2
numeric_limits< long > LONG_MIN LONG_MIN LONG_MAX 2
numeric_limits< signed long >
numeric_limits< unsigned long > ​0​ ​0​ ULONG_MAX 2
numeric_limits< long long > LLONG_MIN LLONG_MIN LLONG_MAX 2
numeric_limits< signed long long >
numeric_limits< unsigned long long > ​0​ ​0​ ULLONG_MAX 2
numeric_limits< float > FLT_MIN -FLT_MAX FLT_MAX FLT_EPSILON FLT_MANT_DIG FLT_DIG FLT_MIN_EXP FLT_MIN_10_EXP FLT_MAX_EXP FLT_MAX_10_EXP FLT_RADIX
numeric_limits< double > DBL_MIN -DBL_MAX DBL_MAX DBL_EPSILON DBL_MANT_DIG DBL_DIG DBL_MIN_EXP DBL_MIN_10_EXP DBL_MAX_EXP DBL_MAX_10_EXP FLT_RADIX
numeric_limits< long double > LDBL_MIN -LDBL_MAX LDBL_MAX LDBL_EPSILON LDBL_MANT_DIG LDBL_DIG LDBL_MIN_EXP LDBL_MIN_10_EXP LDBL_MAX_EXP LDBL_MAX_10_EXP FLT_RADIX

[editar] Ejemplo

#include <limits>
#include <iostream>
 
int main() 
{
    std::cout << "type\tlowest\thighest\n";
    std::cout << "int\t"
              << std::numeric_limits<int>::lowest() << '\t'
              << std::numeric_limits<int>::max() << '\n';
    std::cout << "float\t"
              << std::numeric_limits<float>::lowest() << '\t'
              << std::numeric_limits<float>::max() << '\n';
    std::cout << "double\t"
              << std::numeric_limits<double>::lowest() << '\t'
              << std::numeric_limits<double>::max() << '\n';
}

Possible output: 

type    lowest         highest
int     -2147483648    2147483647
float   -3.40282e+38   3.40282e+38
double  -1.79769e+308  1.79769e+308
Obtenido de «http://es.cppreference.com/mwiki/index.php?title=cpp/types/numeric_limits&oldid=21652»