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std::numeric_limits::is_exact

提供: cppreference.com

 
 
 
型支援機能
基本的なタイプ
Original:
Basic types
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基本的なタイプ
固定幅の整数型 (C++11)
数値の限界
Original:
Numeric limits
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numeric_limits
Cの数値は、インターフェイスを制限します
実行時型情報
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Runtime type information
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型の特徴
Original:
Type traits
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プライマリタイプカテゴリ
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Primary type categories
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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)
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)
Typeプロパティ
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Type properties
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is_const(C++11)
is_volatile(C++11)
is_pod(C++11)
is_empty(C++11)
is_polymorphic(C++11)
is_abstract(C++11)
サポートされる操作
Original:
Supported operations
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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)
リレーションシップとプロパティクエリ
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Relationships and property queries
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is_same(C++11)
is_base_of(C++11)
is_convertible(C++11)
alignment_of(C++11)
rank(C++11)
extent(C++11)
型の変更
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Type modifications
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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)
型変換
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Type transformations
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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)
形質定数を入力します
Original:
Type trait constants
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integral_constant(C++11)
 
 
static const bool is_exact
(C++11以前)
static constexpr bool is_exact
(C++11およびそれ以降)
std::numeric_limits<T>::is_exactの値は、すべての算術型true正確な表現を使用するためTです.
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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[編集] 標準の専門分野

T
std::numeric_limits<T>::is_exactの値
Original:
value of std::numeric_limits<T>::is_exact
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/* 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

[編集] ノート

すべての基本型Tが整数型であるstd::numeric_limits<T>::is_exact==trueいる間、ライブラリは、例えば、整数ではない正確なタイプを定義するかもしれません分数を表す合理的な算術演算の種類.
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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[編集] も参照してください

[静的]
整数型を識別します
Original:
identifies integer types
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(パブリック静的メンバ定数) [edit]
[静的]
符号付きであるかを識別します
Original:
identifies signed types
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(パブリック静的メンバ定数) [edit]
[静的]
identifies types that represent a finite set of values
(パブリック静的メンバ定数) [edit]