Re: Bitwise confusion?

["Soni L." <fakedme@...>]

On 07/01/16 05:35 PM, joec@infoark.com wrote:
> I'm running LUA v5.3.2. In the code below shouldn't the following if 
> statements produce the same results?
>
> -----code below here------
>
> local tracemask = 0x00000040
> local traceflgs = 0
>
> val = traceflgs & tracemask
>
> if (traceflgs & tracemask) then
>     print("val=" .. val .. "\n")
> else
>     print("Branch not taken...\n")
> end
>
> if ((traceflgs & tracemask) > 0) then
>     print("val=" .. val .. "\n")
> else
>     print("Branch not taken...\n")
> end
if 0 then
  print"0 is true"
else
  print "0 is false"
end

if 0 > 0 then
  print "0 > 0 is true"
else
  print "0 > 0 is false"
end

http://www.lua.org/manual/5.3/manual.html#2.1

"Both nil and false make a condition false; any other value makes it true."

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