FT::Util::Rnd Class Reference

Defines a multi-core random number generator and its operators. More...

#include <rnd.h>

Collaboration diagram for FT::Util::Rnd:

Public Member Functions
void	set_seed (int new_seed)
int	get_seed ()
int	rnd_int (int lowerLimit, int upperLimit)
float	rnd_flt (float min=0.0, float max=1.0)
float	rnd_dbl (float min=0.0, float max=1.0)
float	operator() (unsigned i)
float	operator() ()
template<class RandomAccessIterator >
void	shuffle (RandomAccessIterator first, RandomAccessIterator last)
template<typename Iter >
Iter	select_randomly (Iter start, Iter end)
template<typename T >
T	random_choice (const vector< T > &v)
template<typename T , typename D >
T	random_choice (const vector< T > &v, const vector< D > &w)
float	gasdev ()

Static Public Member Functions
static Rnd *	initRand ()
static void	destroy ()

Private Member Functions
	Rnd ()
	~Rnd ()

Private Attributes
vector< std::mt19937 >	rg
int	seed

Static Private Attributes
static Rnd *	instance = NULL

Detailed Description

Defines a multi-core random number generator and its operators.

Definition at line 30 of file rnd.h.

Constructor & Destructor Documentation

Rnd()

FT::Util::Rnd::Rnd ( )

private

need a random generator for each core to do multiprocessing

Definition at line 14 of file rnd.cc.

~Rnd()

FT::Util::Rnd::~Rnd ( )

private

Definition at line 182 of file rnd.cc.

Member Function Documentation

destroy()

void FT::Util::Rnd::destroy ( )

static

Definition at line 33 of file rnd.cc.

gasdev()

float FT::Util::Rnd::gasdev

(

)

Definition at line 156 of file rnd.cc.

get_seed()

int FT::Util::Rnd::get_seed ( )

inline

Definition at line 40 of file rnd.h.

initRand()

Rnd * FT::Util::Rnd::initRand ( )

static

Definition at line 23 of file rnd.cc.

operator()() [1/2]

float FT::Util::Rnd::operator()

(

)

Definition at line 100 of file rnd.cc.

operator()() [2/2]

float FT::Util::Rnd::operator()

(

unsigned

i

)

Definition at line 95 of file rnd.cc.

random_choice() [1/2]

template<typename T >

T FT::Util::Rnd::random_choice ( const vector< T > &  v )

inline

return a random element of a vector.

Definition at line 73 of file rnd.h.

random_choice() [2/2]

template<typename T , typename D >

T FT::Util::Rnd::random_choice ( const vector< T > &  v, const vector< D > &  w  )

inline

return a weighted random element of a vector

Definition at line 85 of file rnd.h.

rnd_dbl()

float FT::Util::Rnd::rnd_dbl	(	float	min = 0.0,
		float	max = 1.0
	)

Definition at line 89 of file rnd.cc.

rnd_flt()

float FT::Util::Rnd::rnd_flt	(	float	min = 0.0,
		float	max = 1.0
	)

Definition at line 83 of file rnd.cc.

rnd_int()

int FT::Util::Rnd::rnd_int	(	int	lowerLimit,
		int	upperLimit
	)

Definition at line 77 of file rnd.cc.

select_randomly()

template<typename Iter >

Iter FT::Util::Rnd::select_randomly ( Iter  start, Iter  end  )

inline

Definition at line 64 of file rnd.h.

set_seed()

void FT::Util::Rnd::set_seed

(

int

new_seed

)

set seeds for each core's random number generator

Definition at line 41 of file rnd.cc.

shuffle()

template<class RandomAccessIterator >

void FT::Util::Rnd::shuffle ( RandomAccessIterator  first, RandomAccessIterator  last  )

inline

Definition at line 53 of file rnd.h.

Member Data Documentation

instance

Rnd * FT::Util::Rnd::instance = NULL

staticprivate

Definition at line 129 of file rnd.h.

rg

vector<std::mt19937> FT::Util::Rnd::rg

private

Definition at line 127 of file rnd.h.

seed

int FT::Util::Rnd::seed

private

Definition at line 131 of file rnd.h.

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

• rnd.h
• rnd.cc