29 Numerics library [numerics]

29.6 Random number generation [rand]

29.6.8 Random number distribution class templates [rand.dist]

29.6.8.2 Uniform distributions [rand.dist.uni]

29.6.8.2.1 Class template uniform_­int_­distribution [rand.dist.uni.int]

A uniform_­int_­distribution random number distribution produces random integers i, , distributed according to the constant discrete probability function

template<class IntType = int>
  class uniform_int_distribution {
  public:
    // types
    using result_type = IntType;
    using param_type  = unspecified;

    // constructors and reset functions
    explicit uniform_int_distribution(IntType a = 0, IntType b = numeric_limits<IntType>::max());
    explicit uniform_int_distribution(const param_type& parm);
    void reset();

    // generating functions
    template<class URBG>
      result_type operator()(URBG& g);
    template<class URBG>
      result_type operator()(URBG& g, const param_type& parm);

    // property functions
    result_type a() const;
    result_type b() const;
    param_type param() const;
    void param(const param_type& parm);
    result_type min() const;
    result_type max() const;
  };

explicit uniform_int_distribution(IntType a = 0, IntType b = numeric_limits<IntType>::max());

Requires: .

Effects: Constructs a uniform_­int_­distribution object; a and b correspond to the respective parameters of the distribution.

result_type a() const;

Returns: The value of the a parameter with which the object was constructed.

result_type b() const;

Returns: The value of the b parameter with which the object was constructed.