Bicubic spline interpolation

[Antonio PALAMA']

Is there any developement effort underway to write gsl routines to:
- Do bicubic spline interpolation in 2-D.
- Compute the best values on a fixed 2-D grid to approximate through 
bicubic spline interpolation a set of experimental data?
If no such routines are available I will probably write something myself 
and would like to contribute it to GSL.

Thanks for your help.

Ciao,

Antonio