[Help-gsl] Interpolation with specification of 2nd derivatives

[eknecronzontas]

Hello!
       I would like to use the GSL interpolation code,
but would prefer to specify the value of the second
derivatives on the boundaries, rather than using the
natural boundary conditions. I've attached a little
code
which naively rewrites the cspline_init() function
to allow specification of the second derivatives, but
it makes things worse for my simple example. Anyone
know
off hand how to fix this?

Thanks,
Andrew


        
                
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gbi.cpp
Description: gbi.cpp