original_string: public static function Obl06($date1, $date2) {
      $t;
      $eps0;
  
      /* Interval between fundamental date J2000.0 and given date (JC). */
      $t = (($date1 - DJ00) + $date2) / DJC;
  
      /* Mean obliquity. */
      $eps0 = (84381.406 +
              (-46.836769 +
              ( -0.0001831 +
              ( 0.00200340 +
              ( -0.000000576 +
              ( -0.0000000434) * $t) * $t) * $t) * $t) * $t) * DAS2R;
  
      return $eps0;
    }
code: public static function Obl06($date1, $date2) {
      $t;
      $eps0;
  
      /* Interval between fundamental date J2000.0 and given date (JC). */
      $t = (($date1 - DJ00) + $date2) / DJC;
  
      /* Mean obliquity. */
      $eps0 = (84381.406 +
              (-46.836769 +
              ( -0.0001831 +
              ( 0.00200340 +
              ( -0.000000576 +
              ( -0.0000000434) * $t) * $t) * $t) * $t) * $t) * DAS2R;
  
      return $eps0;
    }
code_tokens: public static function Obl06 ( $ date1 , $ date2 ) { $ t ; $ eps0 ; /* Interval between fundamental date J2000.0 and given date (JC). */ $ t = ( ( $ date1 - DJ00 ) + $ date2 ) / DJC ; /* Mean obliquity. */ $ eps0 = ( 84381.406 + ( - 46.836769 + ( - 0.0001831 + ( 0.00200340 + ( - 0.000000576 + ( - 0.0000000434 ) * $ t ) * $ t ) * $ t ) * $ t ) * $ t ) * DAS2R ; return $ eps0 ; }
docstring: - - - - - - - - -
  i a u O b l 0 6
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  Mean obliquity of the ecliptic, IAU 2006 precession model.
  
  This function is part of the International Astronomical Union's
  SOFA (Standards Of Fundamental Astronomy) software collection.
  
  Status:  canonical model.
  
  Given:
  date1,date2  double   TT as a 2-part Julian Date (Note 1)
  
  Returned (function value):
  double   obliquity of the ecliptic (radians, Note 2)
  
  Notes:
  
  1) The TT date date1+date2 is a Julian Date, apportioned in any
  convenient way between the two arguments.  For example,
  JD(TT)=2450123.7 could be expressed in any of these ways,
  among others:
  
  date1          date2
  
  2450123.7           0.0       (JD method)
  2451545.0       -1421.3       (J2000 method)
  2400000.5       50123.2       (MJD method)
  2450123.5           0.2       (date & time method)
  
  The JD method is the most natural and convenient to use in
  cases where the loss of several decimal digits of resolution
  is acceptable.  The J2000 method is best matched to the way
  the argument is handled internally and will deliver the
  optimum resolution.  The MJD method and the date & time methods
  are both good compromises between resolution and convenience.
  
  2) The result is the angle between the ecliptic and mean equator of
  date date1+date2.
  
  Reference:
  
  Hilton, J. et al., 2006, Celest.Mech.Dyn.Astron. 94, 351
  
  This revision:  2013 June 18
  
  SOFA release 2015-02-09
  
  Copyright (C) 2015 IAU SOFA Board.  See notes at end.
docstring_tokens: - - - - - - - - - i a u O b l 0 6 - - - - - - - - -