I1. Ordinary differential equations (ODE's)

Functions
Sub	Derkf (N As Long, F As LongPtr, T As Double, Y() As Double, Tout As Double, RTol() As Double, ATol() As Double, Info As Long, Optional Mode As Long=0, Optional Cont As LongPtr)
	Initial value problem of a system of first order ordinary differential equations (5(4)-th order Runge-Kutta-Fehlberg method)
Sub	Derkf_r (N As Long, T As Double, Y() As Double, Tout As Double, RTol() As Double, ATol() As Double, Info As Long, TT As Double, YY() As Double, YYp() As Double, IRev As Long, Optional Mode As Long=-1, Optional Cont As LongPtr)
	Initial value problem of a system of first order ordinary differential equations (5(4)-th order Runge-Kutta-Fehlberg method) (reverse communication version)
Sub	DerkfInt (N As Long, T As Double, Y() As Double, Cont As LongPtr, Optional Info As Long)
	Initial value problem of a system of first order ordinary differential equations (5(4)-th order Runge-Kutta-Fehlberg method) (Interpolation for dense output)

Detailed Description

This is the group of I1. Ordinary differential equations (ODE's).