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MachinePrecision
MachinePrecision is a symbol used to indicate machine-number precision.
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 5.0.
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