In common.h, define func_lib for function objects. In configure.ac, define HAVE_STD_FUNCTION and HAVE_BOOST_FUNCTION. Include function headers in ndnboost.
diff --git a/libs/function/example/sum_avg.cpp b/libs/function/example/sum_avg.cpp
new file mode 100644
index 0000000..488f380
--- /dev/null
+++ b/libs/function/example/sum_avg.cpp
@@ -0,0 +1,38 @@
+// Boost.Function library examples
+
+// Copyright Douglas Gregor 2001-2003. Use, modification and
+// distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+
+#include <iostream>
+#include <boost/function.hpp>
+
+void do_sum_avg(int values[], int n, int& sum, float& avg)
+{
+ sum = 0;
+ for (int i = 0; i < n; i++)
+ sum += values[i];
+ avg = (float)sum / n;
+}
+
+int
+main()
+{
+ // The second parameter should be int[], but some compilers (e.g., GCC)
+ // complain about this
+ ndnboost::function<void (int*, int, int&, float&)> sum_avg;
+
+ sum_avg = &do_sum_avg;
+
+ int values[5] = { 1, 1, 2, 3, 5 };
+ int sum;
+ float avg;
+ sum_avg(values, 5, sum, avg);
+
+ std::cout << "sum = " << sum << std::endl;
+ std::cout << "avg = " << avg << std::endl;
+ return 0;
+}