Looking for Cubic Spline Interpolation Code

[expertalmost]

Good morning!

I have a set of discrete data points from which I need to interpolate
new values. My (neophyte) mathematical research suggests that cubic
spline interpolation gives the best result with the least amount of
calculation overhead.

I expected to find any number of functions in PHP (input two x,y
points, and a point to interpolate: output the interpolated point) but
cannot find any. I find C/C++ code, Matlab, even VBA. I could probably
port some of that code over, but can anyone point me to so tested-
ready-to-run code?

Thanks!

[Robert Gonzalez]

I say try porting it first. In the time it takes someone to search/code it for you, you could probably have already gleaned from the C/VBA code what you would need to turn it into PHP.

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[Jack Timmons]

You've got me. This sounds like something going beyond PHP anyway, and
you'll likely want it in a lower-level language.

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Jack Timmons
@_Codeacula
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