Squashed 'third_party/boostorg/ublas/' content from commit e8607b3

Change-Id: Ia06afd642157a24e17fa9ddea28fb8601810b78e
git-subtree-dir: third_party/boostorg/ublas
git-subtree-split: e8607b3eea238e590eca93bfe498c21f470155c1
diff --git a/doc/samples/banded_matrix.cpp b/doc/samples/banded_matrix.cpp
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+//
+//  Copyright (c) 2000-2002
+//  Joerg Walter, Mathias Koch
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  The authors gratefully acknowledge the support of
+//  GeNeSys mbH & Co. KG in producing this work.
+//
+
+#include <boost/numeric/ublas/banded.hpp>
+#include <boost/numeric/ublas/io.hpp>
+
+int main () {
+    using namespace boost::numeric::ublas;
+    banded_matrix<double> m (3, 3, 1, 1);
+    for (signed i = 0; i < signed (m.size1 ()); ++ i)
+        for (signed j = (std::max) (i - 1, 0); j < (std::min) (i + 2, signed (m.size2 ())); ++ j)
+            m (i, j) = 3 * i + j;
+    std::cout << m << std::endl;
+}
+