SWFProcessing.SWFModeller.SWFDataTypeWriter.RequiredBits C# (CSharp) Method

        private int RequiredBits(int v)
        {
            uint uv;
            if (v >= 0)
            {
                uv = (uint)v;
            }
            else
            {
                uv = (uint)(-v);
            }

            // http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog

            int r = 0;
            for (int i = 4; i >= 0; i--)
            {
                if ((uv & LOG2_MASKS[i]) != 0)
                {
                    uv >>= LOG2_POW[i];
                    r |= LOG2_POW[i];
                }
            }

            r += 2;

            return Math.Min(31, r);
        }