NAME:
    radtodms
 PURPOSE: (one line)
    Convert an angle from radians to degrees, minutes, and seconds.
 DESCRIPTION:

 CATEGORY:
    Astronomy
 CALLING SEQUENCE:
    radtodms, radians, sign, deg, min, sec
 INPUTS:
    radians = Angle expressed in radians.  May be a vector, in which case
              the outputs will be vectors.
 OPTIONAL INPUT PARAMETERS:

 KEYWORD PARAMETERS:

 OUTPUTS:
    sign :  Sign associated with the outputs (-1 or +1).
    deg  :  Degrees.
    min  :  Minutes.
    sec  :  Seconds.
 COMMON BLOCKS:

 SIDE EFFECTS:

 RESTRICTIONS:

 PROCEDURE:
    The input declination is broken into four parts.  The sign is carried
 as a separate value, to make angles near zero behave correctly.  There
 are no invalid angles.
 MODIFICATION HISTORY:
  Copyright (C) 1987, by Marc W. Buie
  Version dated 87/2/1
  Ported by Doug Loucks, Lowell Observatory, August 11, 1993, from the
  C-Language version written by Marc Buie.