rfa 0.5.9

A port ERFA to Rust.
Documentation 
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use crate::utils::*;
use crate::rfam::*;
///  Fundamental argument, IERS Conventions (2003):
///  mean elongation of the Moon from the Sun.
///
///  Given:
///    * t TDB, Julian centuries since J2000.0 (Note 1)
///
///  Returned (function value):
///    * D, 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 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
///
///  This revision:  2021 May 11
pub fn fad03(t: f64)->f64
{
 
 
 /* Mean elongation of the Moon from the Sun (IERS Conventions 2003). */
    fmod(          1072260.703692 +
              t * ( 1602961601.2090 +
              t * (        - 6.3706 +
              t * (          0.006593 +
              t * (        - 0.00003169 ) ) ) ), URSA_TURNAS ) * URSA_DAS2R

 /* Finished. */


}