ROOT::Math::Random<ROOT::Math::GSLRngMT>

ROOT::Math::GSLRngMT	fEngine

fEngine. SetSeed(unsigned int seed)

double Uniform(double x = 1.0)

Generate random numbers between ]0,1]
0 is excluded and 1 is included

double Rndm()

Generate random numbers between ]0,1]
0 is excluded and 1 is included
Function to preserve ROOT Trandom compatibility

void RndmArray(int n, double* array)

Generate an array of random numbers between ]0,1]
0 is excluded and 1 is included
Function to preserve ROOT Trandom compatibility

std::string Type()

Return the type (name) of the used generator

unsigned int EngineSize()

Return the size of the generator state

double Gaus(double mean = 0, double sigma = 1)

 Random  Distributions
Use naming and signatures compatible with ROOT TRandom


Gaussian distribution. Default method (use Ziggurat)

double GausBM(double mean = 0, double sigma = 1)

Gaussian distribution (Box-Muller method)

double GausR(double mean = 0, double sigma = 1)

Gaussian distribution (Ratio Method)

double GaussianTail(double a, double sigma = 1)

Gaussian Tail distribution

void Gaussian2D(double sigmaX, double sigmaY, double rho, double& x, double& y)

Bivariate Gaussian distribution with correlation

double Exp(double tau)

Exponential distribution

double BreitWigner(double mean = 0., double gamma = 1)

Breit Wigner distribution

double Landau(double mean = 0, double sigma = 1)

Landau distribution

double Gamma(double a, double b)

Gamma distribution

double LogNormal(double zeta, double sigma)

Log Normal distribution

double ChiSquare(double nu)

Chi square distribution

double FDist(double nu1, double nu2)

F distrbution

double tDist(double nu)

t student distribution

void Circle(double& x, double& y, double r = 1)

generate random numbers in a 2D circle of radious 1

void Sphere(double& x, double& y, double& z, double r = 1)

generate random numbers in a 3D sphere of radious 1

unsigned int Poisson(double mu)

Poisson distribution

unsigned int Binomial(unsigned int ntot, double prob)

Binomial distribution

std::vector<unsigned int> Multinomial(unsigned int ntot, const vector<double>& p)

Multinomial distribution

class ROOT::Math::Random<ROOT::Math::GSLRngMT>

	~Random<ROOT::Math::GSLRngMT>()
unsigned int	Binomial(unsigned int ntot, double prob)
double	BreitWigner(double mean = 0., double gamma = 1)
double	ChiSquare(double nu)
void	Circle(double& x, double& y, double r = 1)
unsigned int	EngineSize() const
double	Exp(double tau)
double	FDist(double nu1, double nu2)
double	Gamma(double a, double b)
double	Gaus(double mean = 0, double sigma = 1)
double	GausBM(double mean = 0, double sigma = 1)
double	GausR(double mean = 0, double sigma = 1)
void	Gaussian2D(double sigmaX, double sigmaY, double rho, double& x, double& y)
double	GaussianTail(double a, double sigma = 1)
double	Landau(double mean = 0, double sigma = 1)
double	LogNormal(double zeta, double sigma)
vector<unsigned int>	Multinomial(unsigned int ntot, const vector<double>& p)
ROOT::Math::Random<ROOT::Math::GSLRngMT>&	operator=(const ROOT::Math::Random<ROOT::Math::GSLRngMT>&)
unsigned int	Poisson(double mu)
ROOT::Math::Random<ROOT::Math::GSLRngMT>	Random<ROOT::Math::GSLRngMT>()
ROOT::Math::Random<ROOT::Math::GSLRngMT>	Random<ROOT::Math::GSLRngMT>(unsigned int seed)
ROOT::Math::Random<ROOT::Math::GSLRngMT>	Random<ROOT::Math::GSLRngMT>(const ROOT::Math::GSLRngMT& e)
ROOT::Math::Random<ROOT::Math::GSLRngMT>	Random<ROOT::Math::GSLRngMT>(const ROOT::Math::Random<ROOT::Math::GSLRngMT>&)
double	Rndm()
void	RndmArray(int n, double* array)
void	SetSeed(unsigned int seed)
void	Sphere(double& x, double& y, double& z, double r = 1)
double	tDist(double nu)
string	Type() const
double	Uniform(double x = 1.0)