MQL5 ReferenceStandard LibraryMathematicsFuzzy LogicMembership functionsCSigmoidalMembershipFunctionA ACGetValue A (Get method) Gets the membership function slope ratio. double A() Return Value The membership function slope ratio. A (Set method) Sets the membership function slope ratio. void A( const double a // the first membership function slope ratio ) Parameters a [in] Membership function slope ratio. CSigmoidalMembershipFunction C