[dev-context] l-math.lua

Hi Hans, if not math.odd then - function math.odd (n) return n % 2 == 0 end - function math.even(n) return n % 2 ~= 0 end + function math.odd (n) return n % 2 ~= 0 end + function math.even(n) return n % 2 == 0 end end Wolfgang