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    std::numeric_limits::max_exponent

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    <tbody> </tbody>
    static const int max_exponent
    		 (fino al c++11)
    static constexpr int max_exponent
    		 (dal C++11)
    Il valore del std::numeric_limits<T>::max_exponent è il più grande numero positivo tale che n 10n-1
     è un valore rappresentabile finita del tipo a virgola mobile T.
    Original:
    The value of std::numeric_limits<T>::max_exponent is the largest positive number n such that 10n-1
     is a representable finite value of the floating-point type T.
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    Specializzazioni standard

    T
    valore di std::numeric_limits<T>::max_exponent
    Original:
    value of std::numeric_limits<T>::max_exponent
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    /* non-specialized */ 0
    bool 0
    char 0
    signed char 0
    unsigned char 0
    wchar_t 0
    char16_t 0
    char32_t 0
    short 0
    unsigned short 0
    int 0
    unsigned int 0
    long 0
    unsigned long 0
    long long 0
    unsigned long long 0
    float FLT_MAX_EXP
    double DBL_MAX_EXP
    long double LDBL_MAX_EXP

    Esempio

    Vengono illustrate le relazioni di max_exponent, max_exponent10, e max () per il tipo float:
    Original:
    Demonstrates the relationships of max_exponent, max_exponent10, and max() for the type float:
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    #include <iostream>
int main()
{
    std::cout << "max() = " << std::numeric_limits<float>::max() << '\n'
              << "max_exponent10 = " << std::numeric_limits<float>::max_exponent10 << '\n'
              << std::hexfloat
              << "max() = " << std::numeric_limits<float>::max() << '\n'
              << "max_exponent = " << std::numeric_limits<float>::max_exponent << '\n';
}

    Output: 

    max() = 3.40282e+38
max_exponent10 = 38
max() = 0x1.fffffep+127
max_exponent = 128

    Vedi anche

    [statico]
    la più piccola potenza negativa di dieci, che è un valido normalizzato valore a virgola mobile
    Original:
    the smallest negative power of ten that is a valid normalized floating-point value
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    (pubblico membro statico costante) [modifica]
    [statico]
    oltre la più piccola potenza negativa della radice che è una valida virgola mobile normalizzato valore uno
    Original:
    one more than the smallest negative power of the radix that is a valid normalized floating-point value
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    (pubblico membro statico costante) [modifica]
    [statico]
    la più grande potenza intera di 10 che è un valido finita valore a virgola mobile
    Original:
    the largest integer power of 10 that is a valid finite floating-point value
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    You can help to correct and verify the translation. Click here for instructions.

    (pubblico membro statico costante) [modifica]