Christos Zoulas wrote:
   > It is better and more portable to cast it to unsigned char; in this
   > case it does not make a difference (because there is a check that
   > the char is > 0, but in general it is better practice.
   
   I'll change the definition to unsigned char instead.


be wary of doing this -- unsigned char propogation is a *nightmare*
when it comes to writing code that does not generate warnings!