spot::barand< gen > Class Template Reference

Compute pseudo-random integer value between 0 and n included, following a binomial distribution with probability p. More...

#include <spot/misc/random.hh>

Collaboration diagram for spot::barand< gen >:

Public Member Functions
	barand (int n, double p)
	Build a binomial random generator. More...
int	rand () const
	Return a random value. More...

Protected Attributes
const int	n_
	Upper bound. More...
const double	m_
	Mean. More...
const double	s_
	Standard deviation. More...

Detailed Description

template<double(*)() gen>
class spot::barand< gen >

Compute pseudo-random integer value between 0 and n included, following a binomial distribution with probability p.

gen must be a random function computing a pseudo-random double value following a standard normal distribution. Use nrand() or bmrand().

Usually approximating a binomial distribution using a normal distribution and is accurate only if n*p and n*(1-p) are greater than 5.

Constructor & Destructor Documentation

barand()

template<double(*)() gen>

spot::barand< gen >::barand ( int  n, double  p  )

inline

Build a binomial random generator.

Member Function Documentation

rand()

template<double(*)() gen>

int spot::barand< gen >::rand ( ) const

inline

Return a random value.

References spot::barand< gen >::m_, spot::barand< gen >::n_, and spot::barand< gen >::s_.

Member Data Documentation

m_

template<double(*)() gen>

const double spot::barand< gen >::m_

protected

Mean.

Referenced by spot::barand< gen >::rand().

n_

template<double(*)() gen>

const int spot::barand< gen >::n_

protected

Upper bound.

Referenced by spot::barand< gen >::rand().

s_

template<double(*)() gen>

const double spot::barand< gen >::s_

protected

Standard deviation.

Referenced by spot::barand< gen >::rand().

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The documentation for this class was generated from the following file:

• spot/misc/random.hh