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CHG: removed a loop after suggestions that it was unnecessary.

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iceman1001 2015-03-13 08:59:07 +01:00
commit c387fd49a7
1 changed files with 4 additions and 13 deletions
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17
client/lualibs/precalc.lua
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@ -35,19 +35,10 @@ shifts[9]= { 0xD, 0xB, 0x0, 0x6, 0x6, 0x0, 0xB, 0xD, 0xA, 0xC, 0x7, 0x1, 0x1, 0x
shifts[10]= { 0xe, 0x1, 0x1, 0xe, 0x1, 0xe, 0xe, 0x1, 0x1, 0xe, 0xe, 0x1, 0xe, 0x1, 0x1, 0xe }
local function ApplyPermutationAndShifts( pos, value, nibble)
local el2bytes = shifts[pos]
local el2 = el2bytes[nibble+1] --one indexed
local shiftInit = el2bytes[1]
local permrow = perm[shiftInit+1]
local j = 1
for i = 1,16 do
if permrow[i] == el2 then
j = i
break
end
end
local rsbytes = perm[value+1]
local rs = rsbytes[j]
local shiftbytes = shifts[pos]
local shiftElem = shiftbytes[nibble+1] --one indexed
local shiftOne = shiftbytes[1]
local rs = bit32.bxor(value, bit32.bxor(shiftOne, shiftElem))
return rs
end