$MachinePrecision
gives the number of decimal digits of precision used for machine‐precision numbers.
Details
- A typical value of $MachinePrecision is 53Log[10,2] or approximately 16.
- $MachinePrecision is the numerical value of MachinePrecision.
Examples
open allclose allScope (1)
Applications (1)
Properties & Relations (3)
$MachinePrecision evaluates to a number while MachinePrecision is a numerical constant:
$MachinePrecision is numerically Equal to MachinePrecision:
$MachinePrecision is the machine precision approximation to MachinePrecision:
Numbers with just a few digits entered are assumed to have machine precision:
Precision is based on the number of digits when more than ⌈$MachinePrecision⌉+1 are entered:
$MachinePrecision times the number of bits per digit gives the binary machine precision:
Possible Issues (1)
$MachinePrecision uses arbitrary precision computations with machine precision resolution:
MachinePrecision uses machine number computations:
Text
Wolfram Research (1991), $MachinePrecision, Wolfram Language function, https://reference.wolfram.com/language/ref/$MachinePrecision.html (updated 2003).
CMS
Wolfram Language. 1991. "$MachinePrecision." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2003. https://reference.wolfram.com/language/ref/$MachinePrecision.html.
APA
Wolfram Language. (1991). $MachinePrecision. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/$MachinePrecision.html