NAME:
    hmstorad
 PURPOSE: (one line)
    Convert from hours, minutes, and seconds of Right Ascension to radians.
 DESCRIPTION:

 CATEGORY:
    Astronomy
 CALLING SEQUENCE:
    hmstorad, hour, min, sec, radians
 INPUTS:
    hour : Hour.    0   <= hour < 24.
    min  : Minute.  0   <= min  < 60.
    sec  : Second.  0.0 <= sec  < 60.0.
    If more than one of these are vectors, they must be the same length.
    A mixture of scalar and vector input parameters is equivalent to all three
 inputs being vectors: The scalar inputs are treated as replicated vectors.
 OPTIONAL INPUT PARAMETERS:

 KEYWORD PARAMETERS:

 OUTPUTS:
    radians  : Converted angle in radians.
 COMMON BLOCKS:

 SIDE EFFECTS:

 RESTRICTIONS:

 PROCEDURE:

 MODIFICATION HISTORY:
    Copyright (C) 1987, by Marc W. Buie
    Version dated 87/6/3
    Ported by Doug Loucks, Lowell Observatory, August 12, 1993, from the
 C-Language version written by Marc Buie.
   2005/08/23 - MWB, minor modification to ensure full double precision
                      calculation regardless of input data type.