'Declaration Public Class UltraCalcFunctionIsLogical Inherits BuiltInFunctionBase
public class UltraCalcFunctionIsLogical : BuiltInFunctionBase
ISLOGICAL(value)
Value is an UltraCalcValue object, or the result of evaluating an UltraCalc expression, which is thought to be a boolean value (TRUE or FALSE.) Boolean values are named in honor of George Boole, whose development of Boolean algebra governs the special characteristics of logical functions upon these two values.
Depending on the kind of value, it may not be convertible into a boolean value and therefore the ISLOGICAL function returns FALSE. The ISLOGICAL function only furnishes information about the compatibility of a value with the boolean-typed values evaluated by UltraCalc.
The ISLOGICAL function does not perform deductive reasoning. A return value of TRUE should not be interpreted as proof any value or UltraCalc expression passed to the ISLOGICAL function represents a logical outcome.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2