Added boost header

test/external/boost/numeric/ublas/detail/duff.hpp

@@ -0,0 +1,56 @@
+//
+//  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.
+//
+
+#ifndef _BOOST_UBLAS_DUFF_
+#define _BOOST_UBLAS_DUFF_
+
+#define DD_SWITCH(n, d, r, expr) \
+    { \
+        unsigned r = ((n) + (d) - 1) / (d); \
+        switch ((n) % (d))  { \
+        case 0: do { expr;
+#define DD_CASE_I(i, expr) \
+        case (i): expr;
+#define DD_WHILE(r) \
+            } while (-- (r) > 0); \
+        } \
+    }
+
+#define DD_1T(n, d, r, expr) \
+    DD_WHILE(r)
+#define DD_2T(n, d, r, expr) \
+    DD_CASE_I(1, expr) \
+    DD_1T(n, d, r, expr)
+#define DD_3T(n, d, r, expr) \
+    DD_CASE_I(2, expr) \
+    DD_2T(n, d, r, expr)
+#define DD_4T(n, d, r, expr) \
+    DD_CASE_I(3, expr) \
+    DD_3T(n, d, r, expr)
+#define DD_5T(n, d, r, expr) \
+    DD_CASE_I(4, expr) \
+    DD_4T(n, d, r, expr)
+#define DD_6T(n, d, r, expr) \
+    DD_CASE_I(5, expr) \
+    DD_5T(n, d, r, expr)
+#define DD_7T(n, d, r, expr) \
+    DD_CASE_I(6, expr) \
+    DD_6T(n, d, r, expr)
+#define DD_8T(n, d, r, expr) \
+    DD_CASE_I(7, expr) \
+    DD_7T(n, d, r, expr)
+
+#define DD(n, d, r, expr) \
+    DD_SWITCH(n, d, r, expr) \
+    DD_##d##T(n, d, r, expr)
+
+#endif