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std::uniform_int_distribution

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Revision as of 04:21, 5 June 2013 by P12 (Talk | contribs)

 
 
 
Pseudo-random number generation
Engines and engine adaptors
Generators
Distributions
Uniform distributions
uniform_int_distribution
(C++11)
Bernoulli distributions
Poisson distributions
Normal distributions
Sampling distributions
Seed Sequences
(C++11)
C library
 
 
Defined in header <random>
template< class IntType = int >
class uniform_int_distribution;
(since C++11)

Produces random integer values i, uniformly distributed on the closed interval [a, b], that is, distributed according to the discrete probability function

P(i|a,b) =
1
b − a + 1
.

Contents

Member types

Member type Definition
result_type IntType
param_type the type of the parameter set, unspecified

Member functions

constructs new distribution
(public member function) [edit]
resets the internal state of the distribution
(public member function) [edit]
Generation
generates the next random number in the distribution
(public member function) [edit]
Characteristics
returns the distribution parameters
(public member function) [edit]
gets or sets the distribution parameter object
(public member function) [edit]
returns the minimum potentially generated value
(public member function) [edit]
returns the maximum potentially generated value
(public member function) [edit]

Non-member functions

compares two distribution objects
(function) [edit]
performs stream input and output on pseudo-random number distribution
(function template) [edit]

Example

This program simulates throwing 6-sided dice.

#include <random>
#include <iostream>
 
int main()
{
    std::random_device rd;
    std::mt19937 gen(rd());
    std::uniform_int_distribution<> dis(1, 6);
 
    for (int n=0; n<10; ++n)
        std::cout << dis(gen) << ' ';
    std::cout << '\n';
}

Possible output:

1 1 6 5 2 2 5 5 6 2