NAME:
    radtohms
 PURPOSE: (one line)
    Convert from radians to hours, minutes, and seconds of right ascension.
 DESCRIPTION:

 CATEGORY:
    Astronomy
 CALLING SEQUENCE:
    radtohms, radians, hh, mm, ss
 INPUTS:
    radians : Angle expressed in radians.  May be a vector, in which case
              the outputs will be vectors.
 OPTIONAL INPUT PARAMETERS:

 KEYWORD PARAMETERS:

 OUTPUTS:
    hh : Hours
    mm : Minutes
    ss : Seconds
 COMMON BLOCKS:

 SIDE EFFECTS:

 RESTRICTIONS:

 PROCEDURE:
    The angle is reduced to its principal value then converted to hours.
    The decimal number of hours is broken up into the three pieces.  There are
  no invalid input quantities.
    Calls external function prival.pro.
 MODIFICATION HISTORY:
    Copyright (C) 1987, by Marc W. Buie
    Version dated 87/2/1
    Ported by Doug Loucks, Lowell Observatory, July 28, 1993, from the
    C-Language version written by Marc Buie.