Signed longitudinal starts still recover by a fraction of the remaining gap. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
Signed starts use the same remaining-gap rule
Equilibrium stays at 16. The start value can be signed, but the gap is still equilibrium minus start.
gap=M∞−Ms
Three starts give three exact half-gap landings
The half-step changes because each signed start leaves a different remaining gap.
Ms−16−80gap322416increment16128Mf048
The middle row lands at four
Starting at -8 leaves gap 24; a half-step adds 12 and lands at 4.