solve_powell_call_solver()

template<typename F , typename T , typename... Args, require_eigen_vector_t< T > * = nullptr>

T & stan::math::solve_powell_call_solver	(	const F &	f,
		T &	x,
		std::ostream *const	msgs,
		const double	relative_tolerance,
		const double	function_tolerance,
		const int64_t	max_num_steps,
		const Args &...	args
	)

Solve algebraic equations using Powell solver.

Template Parameters

F	type of equation system function
T	type of elements in the x vector
Args	types of additional parameters to the equation system functor

Parameters

[in]	f	Functor that evaluates the system of equations
[in]	x	Vector of starting values (initial guess).
[in,out]	msgs	the print stream for warning messages.
[in]	relative_tolerance	determines the convergence criteria for the solution.
[in]	function_tolerance	determines whether roots are acceptable.
[in]	max_num_steps	maximum number of function evaluations.
[in]	args	additional parameters to the equation system functor.

Returns

theta_dbl Double vector of solutions to the system of equations.

Precondition

x has size greater than zero.

x has only finite elements.

f returns finite values when passed any value of x and the given args.

relative_tolerance is non-negative.

function_tolerance is non-negative.

max_num_steps is positive.

Exceptions

<code>std::domain_error</code>	solver exceeds max_num_steps.
<code>std::domain_error</code>	if the norm of the solution exceeds the function tolerance.

Definition at line 48 of file solve_powell.hpp.