[Bug-gsl] Cspline interpolation problem

[Daniel Webb]

I have a set of data that kills cspline (all output is nan).  akima works
fine as far as I can tell.  I don't know a whole lot about splines, but
the data set is not that erratic (at least to my eye).

Test case:
http://fuzzy.colorado.edu/spline_bug/test.c
http://fuzzy.colorado.edu/spline_bug/test.dat

I compiled test.c on my system with:

gcc test.c -lm -lgsl -latlas -lcblas -L/usr/lib/3dnow -g

valgrind ./a.out didn't show any memory errors.

I'm using the source tarball of gsl 1.5.

Daniel