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  • Chop[ expr ] replaces approximate real numbers in expr that are close to zero by the exact integer 0.
  • Chop[ expr , delta ] replaces numbers smaller in absolute magnitude than delta by 0.
  • Chop uses a default tolerance of .
  • Chop works on both Real and Complex numbers.
  • See the Mathematica book: Section 3.1.4.
  • See also: Rationalize, Round.

    Further Examples

    This computation gives a small imaginary part.



    You can get rid of the small imaginary part using Chop.