BUILT-IN MATHEMATICA SYMBOL

MachinePrecision

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

Details Details

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.

Examples Examples open all close all

Basic Examples (2)Basic Examples (2)

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MachinePrecision is treated as an exact numeric quantity:

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Use like any number:

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The number of bits represented:

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Scope (2)Scope (2)

Applications (3)Applications (3)

Properties & Relations (4)Properties & Relations (4)

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See Also See Also

$MachinePrecision Precision Accuracy N

Tutorials Tutorials

Numerical Precision

Related Guides Related Guides

Precision & Accuracy Control

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