The function factor is manages a list of functions that can be referenced in formulas. Each function is defined through a UltraCalcFunctionDescriptor that contains methods and properties to access the function information such as its decription and argument arity. User defined functions may be created to extend this table, and are available when registering them with a specific UltraCalcEngine instance.
Target Platforms: Windows 10, Windows 8.1, Windows 8, 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