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piecewise_constant_distribution::piecewise_constant_distribution

Constructs the distribution.

piecewise_constant_distribution();
template<class InIt1, class InIt2>
    piecewise_constant_distribution(InIt1 first1, InIt1 last1,
        InIt2 first2);
template<class Fn>
    piecewise_constant_distribution(size_t count,
        double low, double high, Fn func);
explicit piecewise_constant_distribution(const param_type& par0);

Parameters

  • first1
    An input iterator addressing the position of the first element in the distribution range.

  • last1
    An input iterator addressing the position of the last element in the distribution range.

  • first2
    An input iterator addressing the position of the first element in the new distribution range.

  • count
    The number of elements in the distribution range.

  • low
    The lowest value in the distribution range.

  • high
    The highest value in the distribution range.

  • func
    The object representing the probability function for the distribution.

  • par0
    The parameter package used to construct the distribution.

Remarks

Precondition: All elements to be stored in stored_p are nonnegative and at least one is nonzero.

The first constructor constructs an object whose stored value stored_x holds the values RealType(0.0) and RealType(1.0), and whose stored value stored_p holds the value 1.0.

The second constructor constructs an object whose stored value stored_x is initialized with the sequence [first1, last1). If the sequence has fewer than two elements, stored_x has two elements RealType(0.0) and RealType(1.0), and stored_p has one element with value 1. Otherwise, stored_p is initialized with stored_x.size() - 1 elements beginning at first2, then normalized so that the sum of all elements is 1.

The third constructor constructs an object whose stored value stored_p is initialized with count elements. It divides the range high - low into count subranges, then stores in element I the value func(x) for x in the middle of subrange I. It stores in stored_x the count + 1 endpoints of these subranges. If count < 1, stored_p has one element with value 1.

The fourth constructor constructs an object whose stored parameters are initialized from par0.

Requirements

Header: <random>

Namespace: std

See Also

Reference

<random>

piecewise_constant_distribution Class

Other Resources

<random> Members