$NumberMarks

$NumberMarks

gives the default value for the option NumberMarks, which specifies whether ` marks should be included in the input form representations of approximate numbers.

Details

  • The default setting for $NumberMarks is Automatic.
  • $NumberMarks=True indicates that ` should by default be used in all approximate numbers, both machineprecision and arbitraryprecision ones.
  • $NumberMarks=Automatic indicates that ` should by default be used in arbitraryprecision but not machineprecision numbers.
  • $NumberMarks=False indicates that ` should by default never be used in outputting numbers.

Examples

Basic Examples  (2)

The default value of $NumberMarks is Automatic:

MachinePrecision numbers are shown without a number mark:

Arbitrary-precision numbers are shown with a mark and the precision:

Temporarily force machine numbers to be shown with number marks:

Introduced in 1996
 (3.0)