34 volatile double h =
xh -
x;
Interface class representing a function with an arbitrary number of parameters.
static double guess_h(double initial_h, double x)
double derivative2nd(const Function &f, const double x)
std::array< std::vector< double >, N > Coordinates
Used to pass the grid coordinates to interpn. Internally will make a copy of the required values.
double derivative(const Function &f, const double x)