Imported from /home/lorry/working-area/delta_boost-tarball/boost_1_58_0.tar.bz2.HEADboost_1_58_0master

1 files changed, 31 insertions, 4 deletions

diff --git a/boost/numeric/odeint/stepper/base/explicit_error_stepper_base.hpp b/boost/numeric/odeint/stepper/base/explicit_error_stepper_base.hpp
index 3ba11a4fe..08009dc16 100644
--- a/boost/numeric/odeint/stepper/base/explicit_error_stepper_base.hpp
+++ b/boost/numeric/odeint/stepper/base/explicit_error_stepper_base.hpp
@@ -152,6 +152,22 @@ public:
 
 
     /*
+     * named Version 2: do_step_dxdt_impl( sys , in , dxdt , t , dt )
+     *
+     * this version is needed when this stepper is used for initializing 
+     * multistep stepper like adams-bashforth. Hence we provide an explicitely
+     * named version that is not disabled. Meant for internal use only.
+     */
+    template < class System, class StateInOut, class DerivIn >
+    void do_step_dxdt_impl( System system, StateInOut &x, const DerivIn &dxdt,
+                            time_type t, time_type dt )
+    {
+        this->stepper().do_step_impl( system , x , dxdt , t , x , dt );
+    }
+
+
+
+    /*
      * Version 3 : do_step( sys , in , t , out , dt )
      *
      * this version does not solve the forwarding problem, boost.range can not be used
@@ -181,10 +197,21 @@ public:
     {
         this->stepper().do_step_impl( system , in , dxdt , t , out , dt );
     }
-
-
-
-
+    
+    /*
+     * named Version 4: do_step_dxdt_impl( sys , in , dxdt , t , out, dt )
+     *
+     * this version is needed when this stepper is used for initializing 
+     * multistep stepper like adams-bashforth. Hence we provide an explicitely
+     * named version that is not disabled. Meant for internal use only.
+     */
+    template < class System, class StateIn, class DerivIn, class StateOut >
+    void do_step_dxdt_impl( System system, const StateIn &in,
+                            const DerivIn &dxdt, time_type t, StateOut &out,
+                            time_type dt )
+    {
+        this->stepper().do_step_impl( system , in , dxdt , t , out , dt );
+    }
 
     /*
      * Version  5 :do_step( sys , x , t , dt , xerr )