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Built-in Functions

Numerical Computation

Numerical Precision

$MachinePrecision

Usage

• $MachinePrecision gives the number of decimal digits of precision used for machine-precision numbers.

Notes

• A typical value of $MachinePrecision is

or approximately 16.

• $MachinePrecision is the numerical value of MachinePrecision.

• See Section 3.1.4 and Section 3.1.6.

• See also: MachinePrecision, $MachineEpsilon, $MinMachineNumber, $MaxMachineNumber.

• Related package: NumericalMath`ComputerArithmetic`.

• New in Version 2; modified in 5.

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