LsgRandom Struct Reference
[Utilities]

Pseudo random number generator. More...

#include <random.h>

Collaboration diagram for LsgRandom:

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Data Fields
LsgObject	super
unsigned long int	state [LSG_RANDOM_STATE_SIZE]
int	i
Related Functions
(Note that these are not member functions.)
LsgRandom *	LsgRandom_create (unsigned long int seed)
void	LsgRandom_init (LsgRandom *self, unsigned long int seed)
unsigned long int	LsgRandom_generate (LsgRandom *self)
float	LsgRandom_random (LsgRandom *self)
float	LsgRandom_randomMax (LsgRandom *self, float limit)
float	LsgRandom_randomError (LsgRandom *self)
float	LsgRandom_randomRange (LsgRandom *self, float base, float error)

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Detailed Description

Pseudo random number generator.

A pseudo random number generator utilizing the Mersenne Twister algorithm.

See also:

http://www.math.keio.ac.jp/~matumoto/emt.html

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Friends And Related Function Documentation

LsgRandom * LsgRandom_create (  unsigned long int  seed  )  [related]

Allocate and initialize a new LsgRandom instance with the given seed value. Parameters: seed  The seed value Returns: a new LsgRandom instance

void LsgRandom_init (  LsgRandom *  self, unsigned long int  seed )  [related]

Initialize the instance with a given seed. Parameters: self  The instance variable seed  The seed value

unsigned long int LsgRandom_generate (  LsgRandom *  self  )  [related]

Return a random unsigned long int between 0 and MAX_ULONG inclusive. Parameters: self  The instance variable Returns: a random value between 0 and MAX_ULONG

float LsgRandom_random (  LsgRandom *  self  )  [related]

Return a random float between 0.0 and 1.0 inclusive. Parameters: self  The instance variable Returns: a random value between 0.0 and 1.0

float LsgRandom_randomMax (  LsgRandom *  self, float  limit )  [related]

Return a random float between 0.0 and a given maximal value (inclusive). Parameters: self  The instance variable self  The highest allowed return value Returns: a random value between 0.0 and limit

float LsgRandom_randomError (  LsgRandom *  self  )  [related]

Return a random float between -1.0 and +1.0 inclusive. Parameters: self  The instance variable Returns: a random value between -1.0 and +1.0

float LsgRandom_randomRange (  LsgRandom *  self, float  base, float  error )  [related]

Return a random float from a given interval. Parameters: self  The instance variable base  The center of the interval error  The maximum distance between the return value and base Returns: a random value from the interval [ base - error, base + error ]

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

• random.h

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(c) 2003, by Enno Cramer
generated on 13 Jul 2003
lescegra - doxygen