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    <metanoindex/>

     
    C++
     
    Bibliothque Numerics
    Fonctions mathmatiques courantes
    Virgule flottante environnement
    Nombres complexes
    Tableaux numriques
    La gnration de nombres pseudo-alatoires
    Moment de la compilation arithmtique rationnelle (C++11)
    Gnriques des oprations numriques
    Original:
    Generic numeric operations
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    iota (C++11)
    accumulate
    inner_product
    adjacent_difference
    partial_sum
     
    Compiler arithmtique rationnelle du temps
    ratio (C++11)
    Arithmtique
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    Arithmetic
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    ratio_add (C++11)
    ratio_subtract (C++11)
    ratio_multiply (C++11)
    ratio_divide (C++11)
    Comparaison
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    Comparison
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    ratio_equal (C++11)
    ratio_not_equal (C++11)
    ratio_less (C++11)
    ratio_less_equal (C++11)
    ratio_greater (C++11)
    ratio_greater_equal (C++11)
     
    <tbody> </tbody>
    Dclar dans l'en-tte <ratio>
    template< std::intmax_t Num, std::intmax_t Denom = 1 > class ratio;
    		 (depuis C++11)

    The class template std::ratio provides compile-time rational arithmetic support. Each instantiation of this template exactly represents any finite rational number as long as its numerator Num and denominator Denom are representable as compile-time constants of type std::intmax_t. In addition, Denom may not be zero and may not be equal to the most negative value. Both numerator and denominator are automatically reduced to the lowest terms.

    Plusieurs dpanneurs typedefs qui correspondent aux ratios SI sont fournies par la bibliothque standard:
    Original:
    Several convenience typedefs that correspond to the SI ratios are provided by the standard library:
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    Defined in header <ratio>
    Type d'
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    Type
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    		 Definition
    yocto
    std::ratio<1, 1000000000000000000000000>, si std::intmax_t peut reprsenter le dnominateur
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    std::ratio<1, 1000000000000000000000000>, if std::intmax_t can represent the denominator
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    zepto
    std::ratio<1, 1000000000000000000000>, si std::intmax_t peut reprsenter le dnominateur
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    std::ratio<1, 1000000000000000000000>, if std::intmax_t can represent the denominator
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    atto std::ratio<1, 1000000000000000000>
    femto std::ratio<1, 1000000000000000>
    pico std::ratio<1, 1000000000000>
    nano std::ratio<1, 1000000000>
    micro std::ratio<1, 1000000>
    milli std::ratio<1, 1000>
    centi std::ratio<1, 100>
    deci std::ratio<1, 10>
    deca std::ratio<10, 1>
    hecto std::ratio<100, 1>
    kilo std::ratio<1000, 1>
    mega std::ratio<1000000, 1>
    giga std::ratio<1000000000, 1>
    tera std::ratio<1000000000000, 1>
    peta std::ratio<1000000000000000, 1>
    exa std::ratio<1000000000000000000, 1>
    zetta
    std::ratio<1000000000000000000000, 1>, si std::intmax_t peut reprsenter le numrateur
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    std::ratio<1000000000000000000000, 1>, if std::intmax_t can represent the numerator
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    yotta
    std::ratio<1000000000000000000000000, 1>, si std::intmax_t peut reprsenter le numrateur
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    std::ratio<1000000000000000000000000, 1>, if std::intmax_t can represent the numerator
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    Types de membres

    Type du membre Dfinition
    type std::ratio<num, den>

    Objets membres

    constexpr intmax_t num
    [
    statique
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    static
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    ]
    constexpr valeur de type std::intmax_t gale sign(Num) * sign(Denom) * abs(Num) / gcd(Num, Denom)
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    constexpr value of type std::intmax_t equal to sign(Num) * sign(Denom) * abs(Num) / gcd(Num, Denom)
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    (constante membre statique publique)
    constexpr intmax_t den
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    statique
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    static
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    ]
    constexpr valeur de type std::intmax_t gale abs(Denom) / gcd(Num, Denom)
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    constexpr value of type std::intmax_t equal to abs(Denom) / gcd(Num, Denom)
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    (constante membre statique publique)
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