module Eth::Abi

def encode_uint(arg, type)
  raise ValueOutOfBounds, "Number out of range: #{arg}" if arg > Constant::UINT_MAX or arg < Constant::UINT_MIN
  real_size = type.sub_type.to_i
  i = arg.to_i
  raise ValueOutOfBounds, arg unless i >= 0 and i < 2 ** real_size
  return Util.zpad_int i
end