Random Numbers
[Math]

Functions for generating random numbers. More...

Functions
float	getRandom (int a, int b)
	Returns a random number based on parameters passed in..
int	getRandomSeed ()
	Get the current seed used by the random number generator.
void	setRandomSeed (int seed=-1)
	Set the current seed for the random number generator.

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Detailed Description

Functions for generating random numbers.

Based on a seed, the random number generator produces a sequence of numbers. As a given seed will always produce the same sequence of numbers this can be used to generate re-producible sequences of apparently random numbers.

To set the seed, call setRandomSeed().

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Function Documentation

float getRandom	(	int	a,
		int	b
	)

Returns a random number based on parameters passed in..

If no parameters are passed in, getRandom() will return a float between 0.0 and 1.0. If one parameter is passed an integer between 0 and the passed in value will be returned. Two parameters will return an integer between the specified numbers.

Parameters:

	a	If this is the only parameter, a number between 0 and a is returned. Elsewise represents the lower bound.
	b	Upper bound on the random number. The random number will be <= b.

Returns:

A pseudo-random integer between a and b, between 0 and a, or a float between 0.0 and 1.1 depending on usage.

Note:

All parameters are optional.

See also:

setRandomSeed

int getRandomSeed

(

)

Get the current seed used by the random number generator.

Returns:

The current random number generator seed value.

void setRandomSeed

(

int

seed = -1

)

Set the current seed for the random number generator.

Based on this seed, a repeatable sequence of numbers will be produced by getRandom().

Parameters:

seed

The seed with which to initialize the randon number generator with. The same seed will always leed tothe same sequence of pseudo-random numbers. If -1, the current timestamp will be used as the seed which is a good basis for randomization.