Cubic interpolation

Looking for a function for cubic interpolation.

Tutorial at www.flipcode.com talks about it, but does not explain it or how to code it.

That would be bi-cubic interpolation, in case anyone did not understand what I'm looking for.

http://www.mathworks.com/access/help...opt2pt15.shtml

any questions? i think that explains it well enough...

Uh......yeah, that explains it. It also shows me that bi-cubic interpolation just ain't gonna happen in real time rendering.

I'll try to code it in asm using the FPU, but I'm not expecting it to remain in my code.

Thanks for the link, though.

yes it is computationally expensive... try to find other ways to at least emulate the results... i'm sorry if i was vague...