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LuaFunctionSpace.h
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Nicolas Marsic authoredNicolas Marsic authored
functionDerivator.h 511 B
#ifndef _FUNCTION_DERIVATOR_H_
#define _FUNCTION_DERIVATOR_H_
#include "fullMatrix.h"
#include "function.h"
class functionDerivator {
dataCacheDouble &_f,&_x;
fullMatrix<double> _fRef, _xRef, _dfdx;
double _epsilon;
public:
functionDerivator (dataCacheDouble &f, dataCacheDouble &x, double epsilon):
_f(f),
_x(x),
_epsilon(epsilon)
{}
const fullMatrix<double> &compute();
inline double get(int iQP, int iF, int iX)
{
return _dfdx(iQP, iF*_xRef.size2()+iX);
}
};
#endif