> I also miss the good old days when extrapolation was automatically computed > using the chosen interpolation scheme. Can this behavior be added as a flag or > as a new function?
I could see a gsl_extrap_eval() and friends that were identical in functionality but that did not perform this x < xmin || x > xmax check. gsl_interp_eval() could then be implemented as this check followed by calling gsl_extrap_eval(). People wanting the old behavior could call the new function which would then self-document that extrapolation is a possibility. Thoughts? - Rhys
