Evaluate the gradient of f(x).
- Parameters:
-
[in] | n | is the dimension of the argument space for f(x); i.e., must be equal n_ . |
[in] | x | has a vector of size n containing the point at which to evaluate the gradient of f(x). |
[in] | new_x | is true if the previous call to any one of the Evaluation Methods used the same value for x . |
[out] | grad_f | is a vector of size n . The input value of its elements does not matter. The output value of its elements is the gradient of f(x) at this value of. |
- Returns:
- The return value is always true; see Evaluation Methods.
Definition at line 478 of file cppad_ipopt_nlp.cpp.