FiniteDifference.h File Reference

#include "Eigen.h"
#include <cctype>
#include <string>
#include <string_view>

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Namespaces
namespace	eonc
	RAII resource manager for the ARTn C library with global synchronization.

Enumerations
enum class	eonc::FdScheme { eonc::OneSided , eonc::Central , eonc::Fourth }
	Real finite-difference scheme for the assembled Hessian and for Lanczos/Davidson Hessian-vector products. More...

Functions
FdScheme	eonc::parseFdScheme (std::string_view scheme)
template<class M>
M	eonc::fdForceDerivative (FdScheme scheme, double dr, const M &f0, const M &fPlus, const M &fMinus, const M &fPlus2, const M &fMinus2)
	Derivative of a sampled force map along one real step of length dr.
template<class Eval>
VectorXd	eonc::fdHessianVector (FdScheme scheme, double dr, const VectorXd &force0, Eval &&eval)
	Energy Hessian-vector product -dF.