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randomize

reset the seed for random number generators

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

randomize(r)

Parameters

r

-

(optional) positive integer

Description

• 

With a positive integer as an argument, randomize(n) will set the state of the random number generator by using the given value as the initial state in a linear congruence random number generator, and using that generator to build the state.  With no arguments, randomize() will use a number based on the system clock as the initial state of the linear congruence random number generator.

• 

The return value will be the initial state of the linear congruence random number generator.  Thus if n is specified the return value is n.

• 

randomize calls RandomTools[MersenneTwister][SetState].  It is more efficient to make this call directly than to call randomize.

• 

By passing the value returned by randomize into a subsequent call to randomize the same sequence of numbers will be generated.

• 

Since the no argument form of randomize() depends on the system clock, the same seed can be obtained if not enough time elapses between two consecutive calls to randomize().

Examples

Seedrandomize

Seed:=145524575924562

(1)

rand

339934062091

(2)

rand

372547754138

(3)

randomizeSeed

145524575924562

(4)

rand

339934062091

(5)

See Also

LinearAlgebra[RandomMatrix]

rand

RandomTools

RandomTools[GetState]

RandomTools[MersenneTwister][SetState]

RandomTools[SetState]

randpoly

Statistics[RandomVariable]

StringTools[Randomize]

 


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