B
Bob Mat
I have found a module which starts as follows:-
------------------------------------------------------------------------------
' This module contains routines for cubic spline interpolation and
integration.
' Designed for Microsoft Excel 97 and beyond
' Written 1999/6/30, David J. Braden
' Revisions:
' 1999/7/2 DJB Made 2nd derivative at upper endpoint exact
' Tightened up input validation code
' 1999/7/6 DJB Streamlined (optional) error-checking
' About 20% of the code is for checking that input is valid, hence the length.
' If you "know" that input is always valid, set the compiler directive
' fValidateInput = True.
------------------------------------------------------------------------------
' This module contains routines for cubic spline interpolation and
integration.
' Designed for Microsoft Excel 97 and beyond
' Written 1999/6/30, David J. Braden
' Revisions:
' 1999/7/2 DJB Made 2nd derivative at upper endpoint exact
' Tightened up input validation code
' 1999/7/6 DJB Streamlined (optional) error-checking
' About 20% of the code is for checking that input is valid, hence the length.
' If you "know" that input is always valid, set the compiler directive
' fValidateInput = True.