◆ create_update_fun()

template<typename ObjFun , typename ThetaGradFun , typename Covariance , typename Options >

auto stan::math::internal::create_update_fun	(	ObjFun &&	obj_fun,
		ThetaGradFun &&	theta_grad_f,
		Covariance &&	covariance,
		Options &&	options
	)

inline

Create the update function for the line search, capturing necessary references.

Template Parameters

ObjFun	Callable type for the objective function (accepting (a, theta))
ThetaGradFun	Callable type for the theta gradient function (accepting theta)
Covariance	Type of the covariance matrix
Options	Type of the options struct containing line search parameters

Parameters

[in]	obj_fun	Objective function functor
[in]	theta_grad_f	Theta gradient functor
[in]	covariance	Prior covariance matrix Sigma
[in]	options	Options struct containing line search parameters

Returns: A callable update function for the line search, with signature:
bool update_fun(proposal, curr, prev, eval_in, p)