[Help-gsl] arbitrary boundary conditions for splines

[Alexis Rohou]

Dear all,

I am aware (
http://www.gnu.org/software/gsl/manual/html_node/Interpolation-Types.html)
that GSL uses natural splines (i.e. with second derivative = 0 at
boudaries), but was wondering whether there might be a way to specify
other/arbitrary boundary conditions.

Any pointers would be great..

Thanks!