JdRepr
Defined in: jd2.rs:38
pub trait JdRepr: sealed::Sealed + [Copy](https://doc.rust-lang.org/std/marker/trait.Copy.html) + [PartialEq](https://doc.rust-lang.org/std/cmp/trait.PartialEq.html) + [core::fmt::Debug](https://doc.rust-lang.org/std/fmt/trait.Debug.html)The Julian Date storage behind a canonical-TAI Epoch(super::Epoch): a JD
value plus the day-level arithmetic the epoch applies (lens conversion,
duration_since, add_si_seconds). Sealed — the only impls are f64 (the
coarse tier) and TwoPartJd (the precise tier); which one an Epoch stores
is selected by its (also sealed) Precision(super::Precision), so this is a
closed set, not a downstream extension point.
Required Methods
Section titled “Required Methods”from_jd()
Section titled “from_jd()”fn from_jd(jd: f64) -> Self
From a single f64 JD. For TwoPartJd the residual is zero — precision
beyond f64 is only created by the arithmetic methods, never ingested
here.
from_parts()
Section titled “from_parts()”fn from_parts(hi: f64, lo: f64) -> Self
From an explicit high part and residual. For f64 this collapses to
hi + lo; for TwoPartJd it retains the residual (renormalized). This
is the lossless bridge between tiers (see
Epoch::to_precision(super::Epoch::to_precision)).
fn jd(self) -> f64
The value as a single f64 (a lossy collapse for the precise tier).
parts()
Section titled “parts()”fn parts(self) -> (f64, f64)
The (hi, lo) parts; lo is always 0.0 for the coarse f64 tier.
add_days()
Section titled “add_days()”fn add_days(self, days: f64) -> Self
Add days, keeping whatever precision the representation carries.
diff_days()
Section titled “diff_days()”fn diff_days(self, other: Self) -> f64
Difference self - other in days.