pub unsafe extern "C" fn IDASetPreconditionerB(
ida_mem: *mut c_void,
which: c_int,
psetB: IDALsPrecSetupFnB,
psolveB: IDALsPrecSolveFnB,
) -> c_intpub unsafe extern "C" fn IDASetPreconditionerB(
ida_mem: *mut c_void,
which: c_int,
psetB: IDALsPrecSetupFnB,
psolveB: IDALsPrecSolveFnB,
) -> c_int