MachinePrecision

Usage

• MachinePrecision is a symbol used to indicate machine-number precision.

Notes

• The numerical value of MachinePrecision is $MachinePrecision.

• Precision[1.] gives MachinePrecision.

• MachinePrecision is the default specification for precision in N and other numerical functions.

• Approximate real numbers are assumed to have precision specified by MachinePrecision if fewer than $MachinePrecision explicit digits are entered.

• The option setting WorkingPrecision->MachinePrecision specifies that internal computations in numerical functions should be done with machine numbers.

• MachinePrecision is treated as a numeric constant, with attribute Constant.

• See Section 3.1.4.

• See also: $MachinePrecision, Precision.

• New in Version 5.