pub unsafe extern "C" fn CVodeSetPreconditionerB(
cvode_mem: *mut c_void,
which: c_int,
psetB: CVLsPrecSetupFnB,
psolveB: CVLsPrecSolveFnB,
) -> c_intpub unsafe extern "C" fn CVodeSetPreconditionerB(
cvode_mem: *mut c_void,
which: c_int,
psetB: CVLsPrecSetupFnB,
psolveB: CVLsPrecSolveFnB,
) -> c_int