MQL5 ReferenceStandard LibraryMathematicsFuzzy LogicMembership functionsCGeneralizedBellShapedMembershipFunctionA ABCGetValue A (Get method) Gets the membership function concentration ratio. double A() Return Value Concentration ratio value. A (Set method) Sets the membership function concentration ratio. void A( const double a // concentration ratio value ) Parameters a [in] Membership function concentration ratio. CGeneralizedBellShapedMembershipFunction B