I am a new user of VBA and I am in a hurry of searching the exponential interpolation in VBA.
A funcion like:
ExpInterp = F(Pi, Pi+1, Di, Di+1, Dint)
Where: Pi and Pi+1 are points in the Y vector (e.g. points in a term structure) Di and Di+1 are points in the X vector (e.g. business days --numbers or dates) Dint the date of which you want the interpolation (it has to be a number between Di and Di+1