%N grxrgb %F $MIR/src/grxrgb.f
%D Convert HLS color to RGB color
%B
      SUBROUTINE GRXRGB (H,L,S,R,G,B)

 GRPCKG: Convert a color specified in the HLS color model to one in
 the RGB model.  This is a support routine: no graphics I/O occurs.
 The inverse transformation is accomplished with routine GRXHLS.
 Reference: SIGGRAPH Status Report of the Graphic Standards Planning
 Committee, Computer Graphics, Vol.13, No.3, Association for
 Computing Machinery, New York, NY, 1979.

 Arguments:

 H,L,S (real, input): hue (0 to 360), lightness (0 to 1.0), and
       saturation (0 to 1.0).
 R,G,B (real, output): red, green, blue color coordinates, each in the
       range 0.0 to 1.0.
