Detailed Description

The distribution

$P(x)=\frac{1}{\sigma \sqrt{2 \pi}} e^{-\frac{\left(x-x_0\right)^2}{2\sigma^2}}$

This class is experimental.

Definition at line 117 of file prob_dens_func.h.

Public Member Functions
	prob_dens_gaussian ()
	Create a standard normal distribution.

	prob_dens_gaussian (double cent, double sigma)
	Create a Gaussian distribution with width `sigma`. More...

	prob_dens_gaussian (const prob_dens_gaussian &pdg)
	Copy constructor.

prob_dens_gaussian &	operator= (const prob_dens_gaussian &pdg)
	Copy constructor with operator=.

void	set_seed (unsigned long int s)
	Set the seed.

void	set_center (double cent)
	Set the center.

void	set_sigma (double sigma)
	Set the Gaussian width (must be positive)

double	mean ()
	Get the center.

double	stddev ()
	Get the Gaussian width.

virtual double	operator() () const
	Sample from the specified density.

virtual double	pdf (double x) const
	The normalized density.

virtual double	log_pdf (double x) const
	The log of the normalized density.

virtual double	cdf (double x) const
	The cumulative distribution function (from the lower tail)

virtual double	invert_cdf (double in_cdf) const
	The inverse cumulative distribution function.

virtual double	entropy () const
	Entropy of the distribution ( $- \int f \ln f$ )

Protected Attributes
double	cent_
	Central value.

double	sigma_
	Width parameter. More...

o2scl::rng_gsl	r
	Base GSL random number generator.

Constructor & Destructor Documentation

o2scl::prob_dens_gaussian::prob_dens_gaussian	(	double	cent,
		double	sigma
	)

inline

The value of sigma must be larger than zero.

Definition at line 147 of file prob_dens_func.h.

double o2scl::prob_dens_gaussian::sigma_

protected

A value of -1 indicates it is yet unspecified.

Definition at line 129 of file prob_dens_func.h.

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