Has Rule - Maple Help

ScientificErrorAnalysis

 HasRule
 determine whether a symbol is the name of an available rounding rule

 Calling Sequence HasRule( descriptor )

Parameters

 descriptor - symbol

Description

 • The HasRule( descriptor ) command returns true if descriptor is the name of a rule available for use by ScientificErrorAnalysis.  Otherwise, it returns false.
 • For more information on predefined rules in ScientificErrorAnalysis, see Predefined Rounding Rules.

Examples

 > $\mathrm{with}\left(\mathrm{ScientificErrorAnalysis}\right):$
 > $\mathrm{HasRule}\left(\mathrm{round}\right)$
 ${\mathrm{true}}$ (1)
 > $\mathrm{HasRule}\left(\mathrm{round2}\right)$
 ${\mathrm{false}}$ (2)