rkk87 – rklib

module procedure rkk87 module subroutine rkk87(me, t, x, h, xf, xerr)

Kovalnogov, Fedorov, Karpukhina, Simos, Tsitouras 8(7) method

Note

The floating point coefficients here were generated from the rational ones from the 2nd reference.

Type	Intent	Attributes		Name
class(rkk87_class),	intent(inout)		::	me
real(kind=wp),	intent(in)		::	t	initial time
real(kind=wp),	intent(in),	dimension(me%n)	::	x	initial state
real(kind=wp),	intent(in)		::	h	time step
real(kind=wp),	intent(out),	dimension(me%n)	::	xf	state at time `t+h`
real(kind=wp),	intent(out),	dimension(me%n)	::	xerr	truncation error estimate for `x`

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