-- Convert 32 bit IEEE floating point manually
function int_to_float_bitwise(int)
    local sign = bit.rshift(bit.band(int, 0x80000000),31)
    local exp = bit.rshift(bit.band(int, 0x7f800000), 23) - 127
    local man = 1 + (bit.band(int, 0x7fffff) / math.pow(2,23))
    local fval = math.pow(2,exp) * man
    if sign == 1 then fval = fval * -1 end
    return fval
end