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Robin Müller 2023-01-16 23:27:42 +01:00
parent 6f795690fd
commit 264b1a514a
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1 changed files with 24 additions and 3 deletions
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27
src/time/cds.rs
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@ -944,19 +944,23 @@ fn add_for_max_ccsds_days_val<T: ProvidesDaysLength>(
let precision = if let Some(submillis_prec) = time_provider.submillis_precision {
match submillis_prec {
SubmillisPrecision::Microseconds(mut us) => {
let micros = duration.subsec_micros();
let submilli_micros = (micros % 1000) as u16;
let subsec_micros = duration.subsec_micros();
let subsec_millis = subsec_micros / 1000;
let submilli_micros = (subsec_micros % 1000) as u16;
us += submilli_micros;
if us >= 1000 {
let carryover_us = us - 1000;
increment_ms_of_day(&mut next_ms_of_day, 1, &mut next_ccsds_days);
us = carryover_us;
}
increment_ms_of_day(&mut next_ms_of_day, subsec_millis, &mut next_ccsds_days);
Some(SubmillisPrecision::Microseconds(us))
}
SubmillisPrecision::Picoseconds(mut ps) => {
let subsec_nanos = duration.subsec_nanos();
let subsec_millis = subsec_nanos / 10_u32.pow(6);
// 1 ms as ns is 1e6.
let submilli_nanos = duration.subsec_nanos() % 10_u32.pow(6);
let submilli_nanos = subsec_nanos % 10_u32.pow(6);
// No overflow risk: The maximum value of an u32 is ~4.294e9, and one ms as ps
// is 1e9. The amount ps can now have is always less than 2e9.
ps += submilli_nanos * 1000;
@ -965,6 +969,7 @@ fn add_for_max_ccsds_days_val<T: ProvidesDaysLength>(
increment_ms_of_day(&mut next_ms_of_day, 1, &mut next_ccsds_days);
ps = carry_over_ps;
}
increment_ms_of_day(&mut next_ms_of_day, subsec_millis, &mut next_ccsds_days);
Some(SubmillisPrecision::Picoseconds(ps))
}
_ => None,
@ -1917,6 +1922,22 @@ mod tests {
}
}
#[test]
fn test_addition_with_us_precision_u16_days_carry_over() {
let mut provider = TimeProvider::new_with_u16_days(0, 0);
provider.set_submillis_precision(SubmillisPrecision::Microseconds(0));
let duration = Duration::from_micros(1200);
provider += duration;
assert!(provider.submillis_precision().is_some());
let prec = provider.submillis_precision().unwrap();
if let SubmillisPrecision::Microseconds(us) = prec {
assert_eq!(us, 200);
assert_eq!(provider.ms_of_day, 1);
} else {
panic!("invalid precision {:?}", prec)
}
}
#[test]
fn test_addition_with_ps_precision_u16_days() {
let mut provider = TimeProvider::new_with_u16_days(0, 0);