TimeConstraint

TimeConstraint

is an option for various functions that specifies how long to spend doing a particular operation.

Details

  • TimeConstraint->t specifies that a maximum of t seconds of CPU time should be spent doing a particular operation, or trying a particular transformation or part of an algorithm.
  • TimeConstraint->Infinity specifies that there should be no limit on the CPU time allowed.
  • In functions such as Simplify and FullSimplify, settings for TimeConstraint give only the maximum time to be spent doing a particular transformation on a particular subpart; the total time spent processing the whole expression may be considerably larger.
  • Changing the setting for TimeConstraint will never affect the validity of a result obtained from functions like Simplify or FullSimplify, but smaller settings may prevent the simplest possible form from being found.
  • Since different computer systems run at different speeds, the same setting for TimeConstraint can lead to different results on different systems.

Examples

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Basic Examples  (2)

This takes a long time, due to trigonometric expansion, but does not yield a simplification:

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TimeConstraint limits the time spent on any single transformation:

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A similar example, where the transformation yields a simplification:

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In this case, setting TimeConstraint prevents some simplification:

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Scope  (1)

See Also

TimeConstrained  AbsoluteTiming  ComplexityFunction  ExcludedForms

Tutorials

Introduced in 1996
(3.0)