Static assert initial checkin

[SVN r8381]

static_assert_example_3.cpp

@@ -0,0 +1,32 @@
+//  (C) Copyright John Maddock 2000.
+//  Permission to copy, use, modify, sell and
+//  distribute this software is granted provided this copyright notice appears
+//  in all copies. This software is provided "as is" without express or implied
+//  warranty, and with no claim as to its suitability for any purpose.
+
+//  See http://www.boost.org for most recent version including documentation.
+
+#include <climits>
+#include <limits>
+#include <boost/static_assert.hpp>
+
+template <class UnsignedInt>
+class myclass
+{
+private:
+   BOOST_STATIC_ASSERT(sizeof(UnsignedInt) * CHAR_BIT >= 16);
+   BOOST_STATIC_ASSERT(std::numeric_limits<UnsignedInt>::is_specialized
+                        && std::numeric_limits<UnsignedInt>::is_integer
+                        && !std::numeric_limits<UnsignedInt>::is_signed);
+public:
+   /* details here */
+};
+
+myclass<unsigned>      m1; // this should be OK
+//myclass<int>           m2; // this should fail
+//myclass<unsigned char> m3; // and so should this
+
+int main()
+{
+   return 0;
+}