System.Xml.XmlUtf8RawTextWriter.CharEntity C# (CSharp) Méthode

        private static unsafe byte * CharEntity( byte * pDst, char ch ) {
            string s = ((int)ch).ToString( "X",NumberFormatInfo.InvariantInfo );
            pDst[0] = (byte)'&'; 
            pDst[1] = (byte)'#'; 
            pDst[2] = (byte)'x'; 
            pDst += 3;
            
            fixed ( char *pSrc = s ) {
                char *pS = pSrc;
                while ( ( *pDst++ = (byte)*pS++ ) != 0 );
            }

            pDst[-1] = (byte)';';
            return pDst;
        }