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attempt to fix lua 5.2

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kikito 2015-04-06 16:54:24 +02:00
parent cfbceec4ac
commit 60d897e229
1 changed files with 14 additions and 2 deletions
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16
md5.lua
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@ -39,8 +39,20 @@ local ok, bit = pcall(require, 'bit')
if not ok then ok, bit = pcall(require, 'bit32') end
if ok then
bit_or, bit_and, bit_not, bit_xor = bit.bor, bit.band, bit.bnot, bit.bxor
bit_rshift, bit_lshift = bit.rshift, bit.lshift
bit_not = bit.bnot
local tobit = function(n)
return n <= 0x7fffffff and n or -(bit_not(n) + 1)
end
local normalize = function(f)
return function(a,b) return tobit(f(tobit(a), tobit(b))) end
end
bit_or, bit_and, bit_xor = normalize(bit.bor), normalize(bit.band), normalize(bit.bxor)
bit_rshift, bit_lshift = normailize(bit.rshift), normalize(bit.lshift)
else
local function check_int(n)
-- checking not float