1 files changed, 19 insertions, 0 deletions
diff --git a/numpy/f2py/docs/usersguide/callback2.pyf b/numpy/f2py/docs/usersguide/callback2.pyf
new file mode 100644
index 000000000..3d77eed24
--- /dev/null
+++ b/numpy/f2py/docs/usersguide/callback2.pyf
@@ -0,0 +1,19 @@
+!    -*- f90 -*-
+python module __user__routines 
+    interface
+        function fun(i) result (r)
+            integer :: i
+            real*8 :: r
+        end function fun
+    end interface
+end python module __user__routines
+
+python module callback2
+    interface
+        subroutine foo(f,r)
+            use __user__routines, f=>fun
+            external f
+            real*8 intent(out) :: r
+        end subroutine foo
+    end interface 
+end python module callback2