MQL5 ReferenceStandard LibraryMathematicsFuzzy LogicMembership functionsCDifferencTwoSigmoidalMembershipFunctionGetValue A1A2C1C2GetValue GetValue Calculates the value of the membership function by a specified argument. double GetValue( const double x // membership function argument ) Parameters x [in] Membership function argument. Return Value Membership function value. C2 CGeneralizedBellShapedMembershipFunction