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    std::numeric_limits::is_exact

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    <metanoindex/>

     
    C++
     
    Utilità libreria
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    initializer_list(C++11)
    bitset
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    Gli operatori relazionali
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    rel_ops::operator!=
    rel_ops::operator>
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    pair
    tuple(C++11)
    piecewise_construct_t(C++11)
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    Swap, in avanti e spostare
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    Swap, forward and move
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    swap
    forward(C++11)
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    Tipo di supporto
    Tipi base
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    Tipi fondamentali
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    Limiti numerici
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    numeric_limits
    C numerico limita interfaccia
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    is_void(C++11)
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    is_constructible
    is_trivially_constructible
    is_nothrow_constructible    		(C++11)
    (C++11)
    (C++11)
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    is_nothrow_default_constructible    		(C++11)
    (C++11)
    (C++11)
    is_copy_constructible
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    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
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    (C++11)
    (C++11)
    has_virtual_destructor(C++11)
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    is_same(C++11)
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    make_signed(C++11)
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    Digitare costanti tratto
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    integral_constant(C++11)
     
    std::numeric_limits
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    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
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    numeric_limits::has_denorm
    numeric_limits::has_denorm_loss
    numeric_limits::round_style
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    numeric_limits::is_bounded
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    numeric_limits::min_exponent
    numeric_limits::min_exponent10
    numeric_limits::max_exponent
    numeric_limits::max_exponent10
    numeric_limits::traps
    numeric_limits::tinyness_before
    Funzioni membro statiche
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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
    Helper tipi
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    Helper types
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    float_round_style
    float_denorm_style
     
    <tbody> </tbody>
    static const bool is_exact
    		 (fino al c++11)
    static constexpr bool is_exact
    		 (dal C++11)
    Il valore di std::numeric_limits<T>::is_exact è true per tutti i tipi aritmetici T che utilizzano rappresentazione esatta.
    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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    Specializzazioni standard

    T
    valore di std::numeric_limits<T>::is_exact
    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

    Note

    Mentre tutti i tipi fondamentali T per i quali sono std::numeric_limits<T>::is_exact==true tipi interi, una biblioteca può definire tipi esatti che non sono numeri interi, ad esempio, un tipo razionale aritmetica rappresenta frazioni.
    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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    Vedi anche

    [statico]
    identifica i tipi interi
    Original:
    identifies integer types
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    (pubblico membro statico costante) [modifica]
    [statico]
    identifica i tipi di firma
    Original:
    identifies signed types
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    (pubblico membro statico costante) [modifica]
    [statico]
    		 identifies types that represent a finite set of values
    (pubblico membro statico costante) [modifica]