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C + + Konzepte: RandomNumberDistribution

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C++
 
C + + Konzepte
Basic
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Basic
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Library-Wide
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Library-Wide
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Container
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Container
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Container-Elemente
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Container Elements
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Iterator
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Iterator
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Zufallszahlen
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Random Numbers
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RandomNumberDistribution(C++11)
UniformRandomNumberGenerator(C++11)
RandomNumberEngineAdaptor(C++11)
Concurrency
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Concurrency
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BasicLockable(C++11)
Lockable(C++11)
TimedLockable(C++11)
Mutex(C++11)
TimedMutex(C++11)
Andere
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Other
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Ein RandomNumberDistribution ist ein Funktionsobjekt zurückkehrt Zufallszahlen gemäß a Wahrscheinlichkeitsdichtefunktion p(x) oder ein diskrete Wahrscheinlichkeitsverteilung P(x
i) .
Original:
A RandomNumberDistribution is a function object returning random numbers according to a Wahrscheinlichkeitsdichtefunktion p(x) or a diskrete Wahrscheinlichkeitsverteilung P(x
i).
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[Bearbeiten] Anforderungen

This section is incomplete
  • D wird eine Klasse, die den RandomNumberDistribution Anforderungen. Es gilt auch erfüllen die CopyConstructible und CopyAssignable Anforderungen .
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    D is a class meeting the RandomNumberDistribution requirements. It shall also satisfy the CopyConstructible and CopyAssignable requirements.
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  • T ist die zugehörige result_type .
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    T is the associated result_type.
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  • P ist die zugehörige param_type. Es muss den CopyConstructible, CopyAssignable und EqualityComparable Anforderungen .
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    P is the associated param_type. It shall satisfy the CopyConstructible, CopyAssignable, and EqualityComparable requirements.
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  • d ist eine Aufgabe der D und x, y sind potentiell const Objekte D .
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    d is an object of D and x,y are potentially const objects of D.
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  • p ist ein möglicherweise konstanten Wert von P .
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    p is a possibly constant value of P.
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  • g, g1 werden g2 lvalues ​​Erfüllung der UniformRandomNumberGenerator Konzept .
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    g,g1,g2 are lvalues meeting the UniformRandomNumberGenerator concept.
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  • os ist ein L-Wert des std::basic_ostream .
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    os is an lvalue of std::basic_ostream.
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  • is ist ein L-Wert des std::basic_istream .
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    is is an lvalue of std::basic_istream.
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Expression Type Notes Complexity
D::result_type T An arithmetic type compile-time
D::param_type P compile-time
D() constant
D(p) Same as p's construction
d.reset() void Resets the internal state of the distribution object. After a call to this function, the next call to operator() on the distribution object will not be dependent on previous calls to operator(). constant
x.param() P No worse than D(p)
d.param(p) void No worse than D(p)
d(g) T d(g, d.param()) Same as d(g, d.param())
d(g,p) T When called with the same g and p parameter it returns a sequence of numbers distributed according to p(x;p) or P(x
i;p) 		Amortized constant number of incovations of g
x.min() T The greatest lower bound returned by operator() constant
x.max() T The least upper bound returned by operator() constant
x == y bool constant
y != y bool !(x == y) constant
os << x Reference to the type of os Writes a textual representation of the distribution parameters and internal state to os as textual representation. The formatting flags and fill character of os are unchanged.
is >> d Reference to the type of is Restores the distribution parameters and internal state with data read from is. The formatting flags of is are unchanged. The data must have been written using a stream with the same locale, CharT and Traits template parameters, otherwise the behavior is undefined. If bad input is encountered, is.setstate(std::ios::failbit) is called, which may throw std::ios_base::failure. d is unchanged in that case.
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