smash::random::discrete_dist< T > Class Template Reference

#include <random.h>

template<typename T>
class smash::random::discrete_dist< T >

Discrete distribution with weight given by probability vector.

Definition at line 258 of file random.h.

Collaboration diagram for smash::random::discrete_dist< T >:

Public Member Functions
	discrete_dist ()
	Default discrete distribution. More...
	discrete_dist (const std::vector< T > &plist)
	Construct from probability vector. More...
	discrete_dist (std::initializer_list< T > l)
	Construct from probability list. More...
void	reset_weights (const std::vector< T > &plist)
	Reset the discrete distribution from a new probability list. More...
int	operator() ()
	Draw a random number from the discrete distribution. More...

Private Attributes
std::discrete_distribution	distribution
	The distribution object that is being used. More...

Constructor & Destructor Documentation

template<typename T>

smash::random::discrete_dist< T >::discrete_dist ( )

inline

Default discrete distribution.

Always draws 0.

Definition at line 264 of file random.h.

: distribution({1.0}) {}

template<typename T>

smash::random::discrete_dist< T >::discrete_dist ( const std::vector< T > &  plist )

inlineexplicit

Construct from probability vector.

Parameters

plist

Vector with probabilities such that P(i) = vec[i]

Definition at line 269 of file random.h.

      : distribution(plist.begin(), plist.end()) {}

template<typename T>

smash::random::discrete_dist< T >::discrete_dist ( std::initializer_list< T >  l )

inlineexplicit

Construct from probability list.

Parameters

l	Initializer list with probabilities such that P(i) = l[i]

Definition at line 275 of file random.h.

: distribution(l) {}

Member Function Documentation

template<typename T>

void smash::random::discrete_dist< T >::reset_weights ( const std::vector< T > &  plist )

inline

Reset the discrete distribution from a new probability list.

Parameters

plist

Vector with probabilities such that P(i) = vec[i]

Definition at line 280 of file random.h.

                                                {
    distribution = std::discrete_distribution<>(plist.begin(), plist.end());
  }

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template<typename T>

int smash::random::discrete_dist< T >::operator() ( )

inline

Draw a random number from the discrete distribution.

Returns

Sampled value

Definition at line 286 of file random.h.

{ return distribution(engine); }

Member Data Documentation

template<typename T>

std::discrete_distribution smash::random::discrete_dist< T >::distribution

private

The distribution object that is being used.

Definition at line 290 of file random.h.

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

• src/include/smash/random.h