al::rnd Namespace Reference

Random number generation utilities. More...

Classes
class	Random
class	LinCon
	Linear congruential uniform pseudo-random number generator. More...
class	MulLinCon
	Multiplicative linear congruential uniform pseudo-random number generator. More...
class	Tausworthe
	Combined Tausworthe uniform pseudo-random number generator. More...

Functions
rand_uniformf &	global ()
	Get global random number generator.
rand_normal &	global_normal ()
rand_uniformi &	global_ui ()
int	uniformi (int high)
int	uniformi (int low, int high)
float	uniform ()
	Returns uniform random in [0, 1)
template<class T >
T	uniform (const T &hi)
	Returns uniform random in [0, hi)
template<class T >
T	uniform (const T &hi, const T &lo)
	Returns uniform random in [lo, hi)
float	uniformS ()
	Returns signed uniform random in (-1, 1)
template<class T >
float	uniformS (const T &lim)
	Returns signed uniform random in (-lim, lim)
template<int N, class T >
void	ball (T *point)
	Returns point within a unit ball. More...
template<template< int, class > class VecType, int N, class T >
void	ball (VecType< N, T > &point)
	Returns point within a unit ball.
template<class VecType >
VecType	ball ()
	Returns point within a unit ball.
float	normal ()
	Returns standard normal variate.
float	gaussian ()
float	triangle ()
	Returns triangle distribution variate, in (-1,1)
bool	prob ()
	Returns true with probability 0.5.
bool	prob (float p)
	Returns true with probability p.
float	sign (float x=1.f)
	Returns argument with sign randomly flipped.

Detailed Description

Random number generation utilities.

Function Documentation

ball()

template<int N, class T >

void al::rnd::ball ( T *  point )

inline

Returns point within a unit ball.

To get a random point on a sphere, simply normalize the result.

Template Parameters

N	dimensions of ball

Parameters

[in]

point

an array of size N

Definition at line 148 of file al_StdRandom.hpp.