Bicubic function
This block computes
 y = a1
    + a2  x1 + a3  x12
    + a4  x2 + a5  x22
    + a6  x1  x2
    + a7  x1^3
    + a8  x2^3
    + a9  x12  x2
    + a10  x1  x22
- 
Sep 17, 2010 by Michael Wetter:
 First implementation.
Generated at 2025-10-30T19:21:05Z
 by OpenModelicaOpenModelica 1.25.5 using GenerateDoc.mos