template<class Dvector, class ADvector, class FG_eval>

virtual bool CppAD::ipopt::solve_callback< Dvector, ADvector, FG_eval >::eval_grad_f ( Index  n, const Number *  x, bool  new_x, Number *  grad_f  )

inlinevirtual

Evaluate the gradient of f(x).

Parameters

[in]	n	is the dimension of the argument space for f(x); i.e., must be equal nx_.
[in]	x	has a vector of size nx_ containing the point at which to evaluate the gradient of f(x).
[in]	new_x	is false 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 nx_. 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 664 of file solve_callback.hpp.