93             let s2f = s1.checked_add(MAX_FORWARD_DISTANCE);  in test_serial_number_arithmetic32bit()  localVariable
96             if let (Some(s2f), Some(s2b)) = (s2f, s2b) {  in test_serial_number_arithmetic32bit()
97                 assert!(sna32lt(s1, s2f), "s1 < s2 should be true: s1={s1} s2={s2f}");  in test_serial_number_arithmetic32bit()
104                     !sna32gt(s1, s2f),  in test_serial_number_arithmetic32bit()
110                     sna32lte(s1, s2f),  in test_serial_number_arithmetic32bit()
119                     !sna32gte(s1, s2f),  in test_serial_number_arithmetic32bit()
173             let s2f = s1.checked_add(MAX_FORWARD_DISTANCE);  in test_serial_number_arithmetic16bit()  localVariable
176             if let (Some(s2f), Some(s2b)) = (s2f, s2b) {  in test_serial_number_arithmetic16bit()
177                 assert!(sna16lt(s1, s2f), "s1 < s2 should be true: s1={s1} s2={s2f}");  in test_serial_number_arithmetic16bit()
184                     !sna16gt(s1, s2f),  in test_serial_number_arithmetic16bit()
190                     sna16lte(s1, s2f),  in test_serial_number_arithmetic16bit()
199                     !sna16gte(s1, s2f),  in test_serial_number_arithmetic16bit()