Macro from_days_f 

macro_rules! from_days_f {
    ($days:expr, on=$scale:expr, target=$target:expr) => { ... };
    ($days:expr, target=$target:expr, on=$scale:expr) => { ... };
    ($days:expr, on=$scale:expr) => { ... };
    ($days:expr, target=$target:expr) => { ... };
    ($days:expr) => { ... };
}

Builds a Dt from a floating-point day count with optional scale labels.

• Equivalent to Dt::from_days_f.
• Does not perform time-scale conversion.

Defaults

Omitted	Default
on and target	both Scale::TAI
only on=s	target=s
only target=t	on=TAI

Forms

Form	Meaning
from_days_f!(days)	both scales TAI
from_days_f!(days, on=s)	scale and target s
from_days_f!(days, target=t)	scale TAI, target t
from_days_f!(days, on=s, target=t)	either order
from_days_f!(days, target=t, on=s)	either order

Examples

use deep_time::Scale;
use deep_time::macros::from_days_f;

let a = from_days_f!(1.25);
let b = from_days_f!(0.0, on=Scale::UTC);
let c = from_days_f!(1.0, on=Scale::TAI, target=Scale::UTC);

assert_eq!(a, deep_time::Dt::from_days_f(1.25, Scale::TAI, Scale::TAI));
assert_eq!(b, deep_time::Dt::from_days_f(0.0, Scale::UTC, Scale::UTC));
assert_eq!(c, deep_time::Dt::from_days_f(1.0, Scale::TAI, Scale::UTC));