/rust/registry/src/index.crates.io-1949cf8c6b5b557f/sofars-0.6.1/src/fundargs/faur03.rs

Source
use crate::consts::D2PI;
use std::ops::Rem;

/// Fundamental argument, IERS Conventions (2003):
/// mean longitude of Uranus.
///
/// Status:  canonical model.
///
/// Given:
///    t     f64    TDB, Julian centuries since J2000.0 (Note 1)
///
/// Returned (function value):
///          f64    mean longitude of Uranus, radians (Note 2)
///
/// Notes:
///
/// 1) Though t is strictly TDB, it is usually more convenient to use
///    TT, which makes no significant difference.
///
/// 2) The expression used is as adopted in IERS Conventions (2003) and
///    is adapted from Simon et al. (1994).
///
/// References:
///
///    McCarthy, D. D., Petit, G. (eds.), IERS Conventions (2003),
///    IERS Technical Note No. 32, BKG (2004)
///
///    Simon, J.-L., Bretagnon, P., Chapront, J., Chapront-Touze, M.,
///    Francou, G., Laskar, J. 1994, Astron.Astrophys. 282, 663-683
pub fn faur03(t: f64) -> f64 {
    /* Mean longitude of Uranus (IERS Conventions 2003). */
    (5.481293872 + 7.4781598567 * t).rem(D2PI)
}

Coverage Report

Created: 2026-07-30 06:46

Line	Count	Source
1		use crate::consts::D2PI;
2		use std::ops::Rem;
3
4		/// Fundamental argument, IERS Conventions (2003):
5		/// mean longitude of Uranus.
6		///
7		/// Status: canonical model.
8		///
9		/// Given:
10		/// t f64 TDB, Julian centuries since J2000.0 (Note 1)
11		///
12		/// Returned (function value):
13		/// f64 mean longitude of Uranus, radians (Note 2)
14		///
15		/// Notes:
16		///
17		/// 1) Though t is strictly TDB, it is usually more convenient to use
18		/// TT, which makes no significant difference.
19		///
20		/// 2) The expression used is as adopted in IERS Conventions (2003) and
21		/// is adapted from Simon et al. (1994).
22		///
23		/// References:
24		///
25		/// McCarthy, D. D., Petit, G. (eds.), IERS Conventions (2003),
26		/// IERS Technical Note No. 32, BKG (2004)
27		///
28		/// Simon, J.-L., Bretagnon, P., Chapront, J., Chapront-Touze, M.,
29		/// Francou, G., Laskar, J. 1994, Astron.Astrophys. 282, 663-683
30	0	pub fn faur03(t: f64) -> f64 {
31		/* Mean longitude of Uranus (IERS Conventions 2003). */
32	0	(5.481293872 + 7.4781598567 * t).rem(D2PI)
33	0	}