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

 CATEGORY:
    Astronomy
 CALLING SEQUENCE:
    dmstorad, sign, deg, min, sec, radians
 INPUTS:
    sign : Sign associated with the inputs.  Must be -1, or +1.
    deg  : Degrees.  No restrictions.
    min  : Minutes.  0   <= min < 60.
    sec  : Seconds.  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:
    The input declination is in four parts.  The sign is carried as a separate
 value, to make angles near zero behave correctly.
 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.
 2003/07/22, MWB, Relaxed error check to permit 60 in minutes or seconds field.