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<div class="t-tr-text">C + +: conceitos<div class="t-tr-dropdown"><div><div><div class="t-tr-dropdown-arrow-border"></div><div class="t-tr-dropdown-arrow"></div><div class="t-tr-dropdown-h">Original:</div><div class="t-tr-dropdown-orig">C++ concepts:</div><div class="t-tr-dropdown-notes">The text has been machine-translated via [http://translate.google.com Google Translate].<br/> You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.</div></div></div></div></div> RandomNumberDistribution

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< cpp‎ | concept

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C++
 
C + + conceitos
Basic
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Basic
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Biblioteca-Wide
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Library-Wide
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Container
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Container
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Elementos de contêineres
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Container Elements
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Iterator
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Iterator
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Números aleatórios
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Random Numbers
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RandomNumberDistribution
(C++11)
(C++11)
(C++11)
Simultaneidade
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Concurrency
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(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
Outro
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Other
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A RandomNumberDistribution é um objeto função retornando números aleatórios de acordo com um função densidade de probabilidade p(x) ou um distribuição de probabilidade discreta P(x
i).
Original:
A RandomNumberDistribution is a function object returning random numbers according to a função densidade de probabilidade p(x) or a distribuição de probabilidade discreta P(x
i).
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[editar] Requisitos

Esta seção está incompleta
  • D é uma classe que satisfaça os requisitos RandomNumberDistribution. Ele deve também satisfazer a CopyConstructible e requisitos CopyAssignable.
    Original:
    D is a class meeting the RandomNumberDistribution requirements. It shall also satisfy the CopyConstructible and CopyAssignable requirements.
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  • T é o result_type associado.
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    T is the associated result_type.
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  • P é o param_type associado. Ele deve satisfazer os CopyConstructible, CopyAssignable, requisitos e EqualityComparable.
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    P is the associated param_type. It shall satisfy the CopyConstructible, CopyAssignable, and EqualityComparable requirements.
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  • d é um objeto de D e x, y são objetos potencialmente const de 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 é um valor constante de possivelmente P.
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    p is a possibly constant value of P.
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  • g, g1, g2 são lvalues ​​atender o conceito UniformRandomNumberGenerator.
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    g,g1,g2 are lvalues meeting the UniformRandomNumberGenerator concept.
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  • os é um lvalue de std::basic_ostream.
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    os is an lvalue of std::basic_ostream.
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  • is é um lvalue de 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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