1 files changed, 36 insertions, 0 deletions
diff --git a/libs/context/example/execution_context/fibonacci.cpp b/libs/context/example/execution_context/fibonacci.cpp
new file mode 100644
index 000000000..7424fef89
--- /dev/null
+++ b/libs/context/example/execution_context/fibonacci.cpp
@@ -0,0 +1,36 @@
+
+//          Copyright Oliver Kowalke 2014.
+// 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/context/all.hpp>
+
+#define yield(x) p=x; mctx.resume();
+
+int main() {
+    int n=35;
+    int p=0;
+    boost::context::execution_context mctx( boost::context::execution_context::current() );
+    boost::context::execution_context ctx(
+        boost::context::fixedsize_stack(),
+        [n,&p,mctx]()mutable{
+            int a=0;
+            int b=1;
+            while(n-->0){
+                yield(a);
+                auto next=a+b;
+                a=b;
+                b=next;
+            }
+        });
+    for(int i=0;i<10;++i){
+        ctx.resume();
+        std::cout<<p<<std::endl;
+    }
+
+    std::cout << "main: done" << std::endl;
+}