bool cppad_ipopt::cppad_ipopt_nlp::eval_grad_f	(	Index	n,
		const Number *	x,
		bool	new_x,
		Number *	grad_f
	)		[virtual]

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 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 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 494 of file cppad_ipopt_nlp.cpp.