Wrong answer for derivatives

[hratcliffe]

Evaluating first derivatives gives erroneous results at the top (right hand end) of the domain.

Looks like in the conversion from f77 the ngo=2 or 8 case introduced a bug. Line 311 in splpak.F90 should read if (z>0.0_wp) then that is, greater-than to match the "IF z .LE. 0. GOTO end"

Really handy to have a single file spline package though, cheers for the conversion work.

Heather R

[jacobwilliams]

thanks! that was a good catch!