coroutine: fix auto-link in config.hpp and update examples

[SVN r84996]

example/cpp03/power.cpp

@@ -0,0 +1,86 @@
+
+//          Copyright Oliver Kowalke 2009.
+// 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)
+
+#include <cstdlib>
+#include <iostream>
+
+#include <boost/bind.hpp>
+#include <boost/foreach.hpp>
+#include <boost/range.hpp>
+#include <boost/coroutine/all.hpp>
+
+#ifdef BOOST_COROUTINES_UNIDIRECT
+void power( boost::coroutines::push_coroutine< int > & c, int number, int exponent)
+{
+    int counter = 0;
+    int result = 1;
+    while ( counter++ < exponent)
+    {
+            result = result * number;
+            c( result);
+    }
+}
+
+int main()
+{
+    {
+        std::cout << "using range functions" << std::endl;
+        boost::coroutines::pull_coroutine< int > c( boost::bind( power, _1, 2, 8) );
+        boost::coroutines::pull_coroutine< int >::iterator e( boost::end( c) );
+        for ( boost::coroutines::pull_coroutine< int >::iterator i( boost::begin( c) );
+              i != e; ++i)
+            std::cout << * i <<  " ";
+    }
+
+    {
+        std::cout << "\nusing BOOST_FOREACH" << std::endl;
+        boost::coroutines::pull_coroutine< int > c( boost::bind( power, _1, 2, 8) );
+        BOOST_FOREACH( int i, c)
+        { std::cout << i <<  " "; }
+    }
+
+    std::cout << "\nDone" << std::endl;
+
+    return EXIT_SUCCESS;
+}
+#else
+typedef boost::coroutines::coroutine< int() >       coro1_t;
+typedef boost::coroutines::coroutine< void( int) >  coro2_t;
+typedef boost::range_iterator< coro1_t >::type      iterator_t;
+
+void power( coro2_t & c, int number, int exponent)
+{
+    int counter = 0;
+    int result = 1;
+    while ( counter++ < exponent)
+    {
+            result = result * number;
+            c( result);
+    }
+}
+
+int main()
+{
+    {
+        std::cout << "using range functions" << std::endl;
+        coro1_t c( boost::bind( power, _1, 2, 8) );
+        iterator_t e( boost::end( c) );
+        for ( iterator_t i( boost::begin( c) ); i != e; ++i)
+            std::cout << * i <<  " ";
+    }
+
+    {
+        std::cout << "\nusing BOOST_FOREACH" << std::endl;
+        coro1_t c( boost::bind( power, _1, 2, 8) );
+        BOOST_FOREACH( int i, c)
+        { std::cout << i <<  " "; }
+    }
+
+    std::cout << "\nDone" << std::endl;
+
+    return EXIT_SUCCESS;
+}
+#endif