This is documentation for Mathematica 5, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)

Documentation / Mathematica / Built-in Functions / Numerical Computation / Numerical Precision /

$MaxExtraPrecision

FilledSmallSquare $MaxExtraPrecision gives the maximum number of extra digits of precision to be used in functions such as N.

FilledSmallSquare The default value of $MaxExtraPrecision is 50.

FilledSmallSquare You can use Block[$MaxExtraPrecision = n, expr] to reset the value of $MaxExtraPrecision temporarily during the evaluation of expr.

FilledSmallSquare $MaxExtraPrecision is used implicitly in various exact numerical computations, including equality tests, comparisons and functions such as Round and Sign.

FilledSmallSquare See Section 3.1.5.

FilledSmallSquare See also: $MaxPrecision.

FilledSmallSquare New in Version 3.

Further Examples