Detailed Description

By default, the stepsize, deriv_gsl::h is set to $10^{-4}$ in the jacobian_exact constructor.

Note that it is most often wasteful to use this Jacobian in a root-finding routine and using more approximate Jacobians is more efficient.

Default template arguments

Definition at line 339 of file jacobian.h.

Classes
struct	ej_parms
	Parameter structure for passing information. More...

Public Member Functions
int	set_deriv (deriv_base<> &de)
	Set the derivative object.

virtual int	operator() (size_t nx, vec_t &x, size_t ny, vec_t &y, mat_t &jac)
	The operator()

virtual int	jac_err (size_t nx, vec_t &x, size_t ny, vec_t &y, mat_t &jac, mat_t &err)
	Compute the Jacobian and its uncertainty from the numerical differentiation.

Public Member Functions inherited from o2scl::jacobian< mm_funct, boost::numeric::ublas::vector< double >, boost::numeric::ublas::matrix< double > >
virtual int	set_function (mm_funct &f)
	Set the function to compute the Jacobian of.

virtual int	operator() (size_t nx, boost::numeric::ublas::vector< double > &x, size_t ny, boost::numeric::ublas::vector< double > &y, boost::numeric::ublas::matrix< double > &j)=0
	Evaluate the Jacobian `j` at point `y(x)`

Public Attributes
deriv_gsl	def_deriv
	The default derivative object.

Public Attributes inherited from o2scl::jacobian< mm_funct, boost::numeric::ublas::vector< double >, boost::numeric::ublas::matrix< double > >
bool	err_nonconv
	If true, call the error handler if the routine does not converge.

Protected Member Functions
double	dfn (double x, ej_parms &ejp)
	Function for the derivative object.

Protected Attributes
deriv_base *	dptr
	Pointer to the derivative object.

Protected Attributes inherited from o2scl::jacobian< mm_funct, boost::numeric::ublas::vector< double >, boost::numeric::ublas::matrix< double > >
mm_funct	func
	A pointer to the user-specified function.

The documentation for this class was generated from the following file:

Classes