Function lsode::fake_jacobian

pub extern "C" fn fake_jacobian(
    _neq: &c_int, 
    _t: &c_double, 
    _y: *mut c_double, 
    _ml: &c_int, 
    _mu: &c_int, 
    _pd: *const c_double, 
    _nr: &c_int
)

A dummy function to pass to dlsode_ in case the user does not want to specify a Jacobian.