local bit32 = {}

function bit32.bnot (a)
  return ~a & 0xFFFFFFFF
end

function bit32.band (x, y, z, ...)
  if not z then
    return ((x or -1) & (y or -1)) & 0xFFFFFFFF
  else
    local arg = {...}
    local res = x & y & z
    for i = 1, #arg do res = res & arg[i] end
    return res & 0xFFFFFFFF
  end
end

function bit32.bor (x, y, z, ...)
  if not z then
    return ((x or 0) | (y or 0)) & 0xFFFFFFFF
  else
    local arg = {...}
    local res = x | y | z
    for i = 1, #arg do res = res | arg[i] end
    return res & 0xFFFFFFFF
  end
end

return bit32

--[[
*****************************************************************************
* Copyright (C) 1994-2016 Lua.org, PUC-Rio.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*****************************************************************************
]]