This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.
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gives the maximum number of extra digits of precision to be used in functions such as N.
  • You can use Block[{$MaxExtraPrecision=n}, expr] to reset the value of $MaxExtraPrecision temporarily during the evaluation of expr.
  • $MaxExtraPrecision is used implicitly in various exact numerical computations, including equality tests, comparisons and functions such as Round and Sign.
Allow up to 1000 digits of extra precision to complete a numerical approximation:
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