System.Xml.Xsl.XPathConvert.CbitZeroLeft C# (CSharp) Method

        public static int CbitZeroLeft(uint u) {
            int cbit = 0;

            if (0 == (u & 0xFFFF0000)) {
                cbit += 16;
                u <<= 16;
            }
            if (0 == (u & 0xFF000000)) {
                cbit += 8;
                u <<= 8;
            }
            if (0 == (u & 0xF0000000)) {
                cbit += 4;
                u <<= 4;
            }
            if (0 == (u & 0xC0000000)) {
                cbit += 2;
                u <<= 2;
            }
            if (0 == (u & 0x80000000)) {
                cbit += 1;
                u <<= 1;
            }
            Debug.Assert(0 != (u & 0x80000000));

            return cbit;
        }