System.Xml.XPath.XPathNavigator.IsText C# (CSharp) Метод

        internal static bool IsText(XPathNodeType type)
        {
            //return ((1 << (int) type) & TextMask) != 0;
            return (uint)(type - XPathNodeType.Text) <= (XPathNodeType.Whitespace - XPathNodeType.Text);
        }