add "assert (n >= 4);" to prevent macOSx checker from reporting divide_by_zero possibility.
add "assert (n >= 4);" to prevent macOSx checker from reporting divide_by_zero possibility.

kbrock/graphviz,BMJHayward/graphviz,kbrock/graphviz,pixelglow/graphviz,MjAbuz/graphviz,BMJHayward/graphviz,kbrock/graphviz,kbrock/graphviz,ellson/graphviz,jho1965us/graphviz,tkelman/graphviz,MjAbuz/graphviz,BMJHayward/graphviz,BMJHayward/graphviz,BMJHayward/graphviz,jho1965us/graphviz,BMJHayward/graphviz,tkelman/graphviz,pixelglow/graphviz,tkelman/graphviz,ellson/graphviz,kbrock/graphviz,kbrock/graphviz,BMJHayward/graphviz,ellson/graphviz,BMJHayward/graphviz,tkelman/graphviz,ellson/graphviz,pixelglow/graphviz,MjAbuz/graphviz,tkelman/graphviz,jho1965us/graphviz,kbrock/graphviz,jho1965us/graphviz,tkelman/graphviz,pixelglow/graphviz,ellson/graphviz,MjAbuz/graphviz,tkelman/graphviz,MjAbuz/graphviz,MjAbuz/graphviz,pixelglow/graphviz,tkelman/graphviz,jho1965us/graphviz,MjAbuz/graphviz,BMJHayward/graphviz,kbrock/graphviz,pixelglow/graphviz,ellson/graphviz,kbrock/graphviz,MjAbuz/graphviz,kbrock/graphviz,ellson/graphviz,jho1965us/graphviz,tkelman/graphviz,ellson/graphviz,jho1965us/graphviz,MjAbuz/graphviz,BMJHayward/graphviz,MjAbuz/graphviz,jho1965us/graphviz,pixelglow/graphviz,pixelglow/graphviz,pixelglow/graphviz,jho1965us/graphviz,pixelglow/graphviz,ellson/graphviz,tkelman/graphviz,MjAbuz/graphviz,BMJHayward/graphviz,jho1965us/graphviz,jho1965us/graphviz,tkelman/graphviz,ellson/graphviz,kbrock/graphviz,pixelglow/graphviz,ellson/graphviz