Lua decimal sign?

Question

I've used this in other languages, but lua seems to be lacking this rather useful function.

Could one of you nice chappies provide me a lua function to get the sign of the number passed to it?

Answer 1

You can check for the sign like this:

i = -2
if i == math.abs(i) then -- or i >= 0
   print "positive"
else
   print "negative"
end