The variable suffix
.Derivativecontains the derivative values of a variable used in an external function which is again used inside a constraint. The
.Derivativesuffix is only applicable inside the
derivative callattribute of external functions.
The value of the
.Derivativesuffix is numeric.
The dimension of the suffix
.Derivativeis the dimension of the external function plus the dimension of the variable. The domain of the suffix
.Derivativeis the domain of the external function followed by the domain of the variable.