E. Interpolation (Hermite / cubic spline interpolation)

Functions
Sub	Chfdv (X1 As Double, X2 As Double, F1 As Double, F2 As Double, D1 As Double, D2 As Double, Ne As Long, Xe() As Double, Fe() As Double, De() As Double, Nex() As Long, Info As Long)
	Cubic Hermite function and derivative values
Sub	Chfev (X1 As Double, X2 As Double, F1 As Double, F2 As Double, D1 As Double, D2 As Double, Ne As Long, Xe() As Double, Fe() As Double, Nex() As Long, Info As Long)
	Cubic Hermite function values
Sub	Pchbs (N As Long, X() As Double, F() As Double, D() As Double, Knotyp As Long, Nknots As Long, T() As Double, Bcoef() As Double, Ndim As Long, Kord As Long, Info As Long, Optional Idxfd As Long=0, Optional Incfd As Long=1)
	Piecewise cubic Hermite to B-spline conversion
Sub	Pchcm (N As Long, X() As Double, F() As Double, D() As Double, Ismon() As Long, Info As Long, Optional Skip As Boolean=False, Optional Idxfd As Long=0, Optional Incfd As Long=1)
	Monotonicity check for piecewise cubic Hermite function
Sub	Pchfd (N As Long, X() As Double, F() As Double, D() As Double, Ne As Long, Xe() As Double, Fe() As Double, De() As Double, Info As Long, Optional Skip As Boolean=False, Optional Idxfd As Long=0, Optional Incfd As Long=1)
	Evaluation of function and derivative values for piecewise cubic Hermite (and cubic spline) interpolation
Sub	Pchfe (N As Long, X() As Double, F() As Double, D() As Double, Ne As Long, Xe() As Double, Fe() As Double, Info As Long, Optional Skip As Boolean=False, Optional Idxfd As Long=0, Optional Incfd As Long=1)
	Evaluation of function values for piecewise cubic Hermite (and cubic spline) interpolation
Sub	Pchic (Ic() As Long, Vc() As Double, Switch As Double, N As Long, X() As Double, F() As Double, D() As Double, Info As Long, Optional Idxfd As Long=0, Optional Incfd As Long=1)
	Piecewise cubic Hermite interpolation
Sub	Pchim (N As Long, X() As Double, F() As Double, D() As Double, Info As Long, Optional Idxfd As Long=0, Optional Incfd As Long=1)
	Piecewise cubic Hermite interpolation (default boundary conditions)
Sub	Pchse (N As Long, X() As Double, F() As Double, D() As Double, Info As Long, Optional Idxfd As Long=0, Optional Incfd As Long=1)
	Piecewise cubic spline interpolation ("not a knot" condition)
Sub	Pchsp (Ic() As Long, Vc() As Double, N As Long, X() As Double, F() As Double, D() As Double, Info As Long, Optional Idxfd As Long=0, Optional Incfd As Long=1)
	Piecewise cubic spline interpolation

Detailed Description

This is the group of E. Interpolation (Piecewise cubic Hermite interpolation / cubic spline interpolation).