DrawEpsilonReciprocal 5889 magick/draw.c    slope.p=DrawEpsilonReciprocal(dx.p)*dy.p;
DrawEpsilonReciprocal 5890 magick/draw.c    inverse_slope.p=(-1.0*DrawEpsilonReciprocal(slope.p));
DrawEpsilonReciprocal 5936 magick/draw.c      slope.q=DrawEpsilonReciprocal(dx.q)*dy.q;
DrawEpsilonReciprocal 5937 magick/draw.c      inverse_slope.q=(-1.0*DrawEpsilonReciprocal(slope.q));