[Chicken-users] Number question

[William Ramsay]

Hi,

I'm trying to convert rgb values to hex strings.    The algorithm to 
make the conversion is simple enough.   The problem is that the math 
involved produces real numbers rather than whole numbers (i.e. I get 
12.0 instead of just plain 12).    When I try to use this number against 
a list of equivalent hex strings (i.e. position 12 is "C") I get an 
error because 12.0 is a bad argument type for a list-ref.  How do I 
convert the 12.0 to 12?

Bill