MachinePrecision

The precision of a machine number, $53 \log_{10} 2 \approx 15.95$ decimal digits.

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MachinePrecisionthe constant Precision returns for a double.

Typed signatures

Type	Package	Applies
untyped	combinatorics	always

Domain: Collections

Details

• Held as a symbol until N: Precision(1.5) is MachinePrecision, and N(MachinePrecision) is its value in digits.

Examples

Basic #

A double has machine precision

live ↗

In$\mathrm{Precision}(1.5)$Out$\mathrm{MachinePrecision}$

Its value, $53 \log_{10} 2$

live ↗

In$N(\mathrm{MachinePrecision})$Out$15.954\,589\,770\,191\,003$

About

Examples	2
Checked against	Wolfram Language 2 agree
Crosswalk	Wolfram Language

See also: Precision, IsMachineNumber