fix_constraint¶

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User Defined Fixed Effects Constraint Function¶

Syntax¶

vec = mixed_object . fix_constraint ( fixed_vec )

mixed_object¶

We use mixed_object to denote an object of a class that is derived from the cppad_mixed base class.

a1_double¶

see a1_double .

Virtual Function¶

The following virtual function may be implemented in the derived class:

      virtual CppAD::vector<a1_double> fix_constraint (
            const CppAD::vector<a1_double>& fixed_vec
      )

fixed_vec¶

This argument has prototype

const CppAD::vector<a1_double>& fixed_vec

It contains a value for the fixed effects vector.

vec¶

This result has prototype

CppAD::vector< a1_double > vec

It is the value of the constraint function \(c( \theta)\)

Default¶

The base class definition (default) for fix_constraint returns an empty vector; i.e., vec . size () == 0 . In the case where there are no constraints of this form.

Example¶

The file fix_constraint.cpp contains an example using constraints. It returns true, if the test passes, and false otherwise.