lua-users home
lua-l archive

[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index] [Thread Index] 

On 3/4/2014 7:43 PM, Dio Darkclainer wrote:

Hello all!
Code:

for i=1,20 do
    if math.floor(math.log(2^i,2)) ~= i then
       print(i)
    end
end

will be output
3
6
12
13

if use math.log(2^i)/math.log(2) intstead all work correctly
lua 5.2.3


Depends on your OS and compiler.
There was a thread here a while ago, where pow() in a particular implementation did not handle exact cases. Probably this is also something along those lines... 

--
Cheers,
Kein-Hong Man (esq.)
Kuala Lumpur, Malaysia