try to fail gracefully when s <= 0
try to fail gracefully when s <= 0

nabijaczleweli/ODE,keletskiy/ode,nabijaczleweli/ODE,keletskiy/ode,keletskiy/ode,nabijaczleweli/ODE,nabijaczleweli/ODE,keletskiy/ode,nabijaczleweli/ODE,keletskiy/ode,nabijaczleweli/ODE,keletskiy/ode