std::numeric_limits::is_exact

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Os operadores relacionais 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>=

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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 fundamentais
Tipos inteiros de largura fixos (C++11)
ptrdiff_t size_t max_align_t (C++11)	nullptr_t (C++11) offsetof NULL
Limites 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 interface
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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)
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std::numeric_limits

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numeric_limits::is_specialized

numeric_limits::is_signed

numeric_limits::is_integer

numeric_limits::is_exact

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numeric_limits::round_style

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numeric_limits::digits10

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numeric_limits::radix

numeric_limits::min_exponent

numeric_limits::min_exponent10

numeric_limits::max_exponent

numeric_limits::max_exponent10

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numeric_limits::tinyness_before

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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

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float_round_style

float_denorm_style

 

<tbody> </tbody>

static const bool is_exact		(até C++11)
static constexpr bool is_exact		(desde C++11)

O valor de std::numeric_limits<T>::is_exact é true para todos os tipos aritméticos T que utilizam representação exacta.

Original:

The value of std::numeric_limits<T>::is_exact is true for all arithmetic types T that use exact representation.

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Especializações padrão

T	valor de std::numeric_limits<T>::is_exact Original: value of std::numeric_limits<T>::is_exact The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
/* non-specialized */	false
bool	true
char	true
signed char	true
unsigned char	true
wchar_t	true
char16_t	true
char32_t	true
short	true
unsigned short	true
int	true
unsigned int	true
long	true
unsigned long	true
long long	true
unsigned long long	true
float	false
double	false
long double	false

Notas

Enquanto todos os tipos fundamentais para os quais T std::numeric_limits<T>::is_exact==true são tipos inteiros, uma biblioteca pode definir tipos exactos que não são números inteiros, por exemplo, um tipo de aritmética racional representando frações.

Original:

While all fundamental types T for which std::numeric_limits<T>::is_exact==true are integer types, a library may define exact types that aren't integers, e.g. a rational arithmetics type representing fractions.

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Veja também

is_integer [estática]	identifica os tipos inteiros 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. (membro estático público constante)
is_signed [estática]	identifica os tipos assinados 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. (membro estático público constante)
is_bounded [estática]	identifies types that represent a finite set of values (membro estático público constante)