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RandomSeeding

is an option that specifies what seeding of pseudorandom generators should be done inside the operation of a function.

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RandomSeeding

RandomSeeding

is an option that specifies what seeding of pseudorandom generators should be done inside the operation of a function.

Details

Examples

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Basic Examples  (1)

Give an explicit random seeding for FindInstance:

Wolfram Language code: FindInstance[Element[x, Reals], {x}, RandomSeeding -> 1234]

The result will always be the same with this seeding:

Wolfram Language code: FindInstance[Element[x, Reals], {x}, RandomSeeding -> 1234]

With the default Automatic seeding, a different seed is used for each instance:

Wolfram Language code: FindInstance[Element[x, Reals], {x}, RandomSeeding -> Automatic]
Wolfram Language code: FindInstance[Element[x, Reals], {x}, RandomSeeding -> Automatic]

Scope  (1)

Use externally seeded random numbers for FindInstance:

Wolfram Language code: SeedRandom[1234]
Wolfram Language code: FindInstance[Element[x, Integers], {x}, RandomSeeding -> Inherited]

Repeated evaluations with no intervening use of randomness will give the same result:

Wolfram Language code: FindInstance[Element[x, Integers], {x}, RandomSeeding -> Inherited]

If randomness is requested between evaluations, the state will change:

Wolfram Language code: RandomInteger[9, 10]
Wolfram Language code: FindInstance[Element[x, Integers], {x}, RandomSeeding -> Inherited]

RandomSeeding->Inherited causes FindInstance to effectively use BlockRandom:

Wolfram Language code: BlockRandom[RandomInteger[9, 10]]
Wolfram Language code: FindInstance[Element[x, Integers], {x}, RandomSeeding -> Inherited]

Properties & Relations  (1)

RandomSeeding->Inherited uses the current random state:

Wolfram Language code: SeedRandom[2];
Wolfram Language code: BlockRandom[RandomReal[], RandomSeeding -> Inherited]
Wolfram Language code: RandomReal[]

RandomSeeding->Automatic completely ignores the current random state:

Wolfram Language code: SeedRandom[2];
Wolfram Language code: BlockRandom[RandomReal[], RandomSeeding -> Automatic]
Wolfram Language code: RandomReal[]
Wolfram Research (2017), RandomSeeding, Wolfram Language function, https://reference.wolfram.com/language/ref/RandomSeeding.html (updated 2020).

Text

Wolfram Research (2017), RandomSeeding, Wolfram Language function, https://reference.wolfram.com/language/ref/RandomSeeding.html (updated 2020).

CMS

Wolfram Language. 2017. "RandomSeeding." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2020. https://reference.wolfram.com/language/ref/RandomSeeding.html.

APA

Wolfram Language. (2017). RandomSeeding. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/RandomSeeding.html

BibTeX

@misc{reference.wolfram_2026_randomseeding, author="Wolfram Research", title="{RandomSeeding}", year="2020", howpublished="\url{https://reference.wolfram.com/language/ref/RandomSeeding.html}", note=[Accessed: 12-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_randomseeding, organization={Wolfram Research}, title={RandomSeeding}, year={2020}, url={https://reference.wolfram.com/language/ref/RandomSeeding.html}, note=[Accessed: 12-June-2026]}