polynome code?

[Olaf Till]

Hello,

does anybody know of existing code which returns the coefficients of
one cubic polynome, which are completely defined by 4 conditions:

the value of the polynome at two points and the slope of the polynome
at these two points (one of the slopes is actually zero for my
application).

None of the user functions in octave-forge/splines seems to meet this
exactly. But maybe the code there can be used somehow for that and
someone finds it easy to give a hint ...

Olaf



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