Lua yourself

–turn to binary
function numberToBits(src)
local result = {}
local bitLen = 32 
  for i = 1, bitLen do  
    result[i] = src % 2  
    src = math.floor(src / 2)  
  end  
  
  return result  < br>end

Note: Define an array, and then convert the incoming number to binary

–Get the current page A non-zero value of digits
function getBitOrder(src)
local bitLen = 32
local result = 0
for i=1, bitLen do
if src[i]== 1 then
result = i
return result
end
end
return 0
end

Note: This is used as a standard value judgment , Get the serial number of the standard value

function isBitIn(src, haveType)
local _order = getBitOrder(numberToBits(haveType))
local _srcTable = numberToBits(src)
if _srcTable[_order ]==1 then
return true
end

return false

end

Note: Determine whether the src contains the type of haveType , Judge according to the return value

Usage:

if isBitIn(0x00800402, 0x00000400) then

End

Note: Judgment 0x00800402 and 0x00000400 perform bitwise OR operation for judgment