1 files changed, 23 insertions, 22 deletions

diff --git a/src/CuTNetLib/cuComponent.h b/src/CuTNetLib/cuComponent.h
index 6cc8462..fc9666c 100644
--- a/src/CuTNetLib/cuComponent.h
+++ b/src/CuTNetLib/cuComponent.h
@@ -85,6 +85,7 @@ namespace TNet {
     } ComponentType;
     
     typedef std::vector< CuMatrix<BaseFloat>* > MatrixPtrVec;
+    typedef std::vector< const CuMatrix<BaseFloat>* > ConstMatrixPtrVec;
 
     //////////////////////////////////////////////////////////////
     // Constructor & Destructor
@@ -118,20 +119,20 @@ namespace TNet {
       void SetNext(CuComponent* pNxt);
       
       /// Return the number of different inputs for complex component
-      int GetInSect();
+      int GetInSect() const;
       /// Return the number of different outputs for complex component
-      int GetOutSect();
+      int GetOutSect() const;
 
       /// IO Data getters
-      CuMatrix<BaseFloat>& GetInput(int pos=0); 
-      CuMatrix<BaseFloat>& GetOutput(int pos=0);
-      CuMatrix<BaseFloat>& GetErrorInput(int pos=0);
-      CuMatrix<BaseFloat>& GetErrorOutput(int pos=0);
+      const CuMatrix<BaseFloat>& GetInput(int pos=0); 
+      const CuMatrix<BaseFloat>& GetOutput(int pos=0);
+      const CuMatrix<BaseFloat>& GetErrorInput(int pos=0);
+      const CuMatrix<BaseFloat>& GetErrorOutput(int pos=0);
 
       /// Set input vector (bind with the preceding NetworkComponent)
-      void SetInput(CuMatrix<BaseFloat>& rInput,int pos=0);           
+      void SetInput(const CuMatrix<BaseFloat>& rInput,int pos=0);           
       /// Set error input vector (bind with the following NetworkComponent) 
-      void SetErrorInput(CuMatrix<BaseFloat>& rErrorInput,int pos=0);  
+      void SetErrorInput(const CuMatrix<BaseFloat>& rErrorInput,int pos=0);  
 
       /// Perform forward pass propagateion Input->Output,
       /// wrapper for the PropagateFnc method
@@ -146,9 +147,9 @@ namespace TNet {
       virtual void WriteToStream(std::ostream& rOut)  { } 
       
       /// Public wrapper for PropagateFnc
-      void PropagateF(CuMatrix<BaseFloat>& X, CuMatrix<BaseFloat>& Y);
+      void PropagateF(const CuMatrix<BaseFloat>& X, CuMatrix<BaseFloat>& Y);
       /// Public wrapper for BackpropagateFnc
-      void BackpropagateF(CuMatrix<BaseFloat>& X, CuMatrix<BaseFloat>& Y);
+      void BackpropagateF(const CuMatrix<BaseFloat>& X, CuMatrix<BaseFloat>& Y);
 
 
     ///////////////////////////////////////////////////////////////
@@ -171,8 +172,8 @@ namespace TNet {
       size_t mNInputs;  ///< Size of input vectors
       size_t mNOutputs; ///< Size of output vectors 
       
-      CuMatrix<BaseFloat>* mpInput; ///< inputs are NOT OWNED by component
-      CuMatrix<BaseFloat>* mpErrorInput;///< inputs are NOT OWNED by component
+      const CuMatrix<BaseFloat>* mpInput; ///< inputs are NOT OWNED by component
+      const CuMatrix<BaseFloat>* mpErrorInput;///< inputs are NOT OWNED by component
 
       CuMatrix<BaseFloat> mOutput; ///< outputs are OWNED by component
       CuMatrix<BaseFloat> mErrorOutput; ///< outputs are OWNED by component
@@ -316,7 +317,7 @@ namespace TNet {
 
   inline void
   CuComponent::
-  SetInput(CuMatrix<BaseFloat>& rInput,int pos)
+  SetInput(const CuMatrix<BaseFloat>& rInput,int pos)
   {
     mpInput = &rInput;
   }
@@ -324,12 +325,12 @@ namespace TNet {
 
   inline void
   CuComponent::
-  SetErrorInput(CuMatrix<BaseFloat>& rErrorInput,int pos)
+  SetErrorInput(const CuMatrix<BaseFloat>& rErrorInput,int pos)
   {
     mpErrorInput = &rErrorInput;
   }
 
-  inline CuMatrix<BaseFloat>&
+  inline const CuMatrix<BaseFloat>&
   CuComponent::
   GetInput(int pos)
   {
@@ -337,14 +338,14 @@ namespace TNet {
     return *mpInput;
   }
 
-  inline CuMatrix<BaseFloat>&
+  inline const CuMatrix<BaseFloat>&
   CuComponent::
   GetOutput(int pos)
   {
     return mOutput;
   }
 
-  inline CuMatrix<BaseFloat>&
+  inline const CuMatrix<BaseFloat>&
   CuComponent::
   GetErrorInput(int pos)
   {
@@ -352,7 +353,7 @@ namespace TNet {
     return *mpErrorInput;
   }
 
-  inline CuMatrix<BaseFloat>&
+  inline const CuMatrix<BaseFloat>&
   CuComponent::
   GetErrorOutput(int pos)
   {
@@ -375,14 +376,14 @@ namespace TNet {
   
   inline int
   CuComponent::
-  GetInSect()
+  GetInSect() const
   {
 	return 1;
   }
   
   inline int
   CuComponent::
-  GetOutSect()
+  GetOutSect() const
   {
 	return 1;
   }
@@ -403,13 +404,13 @@ namespace TNet {
   
   inline void 
   CuComponent::
-  PropagateF(CuMatrix<BaseFloat>& X, CuMatrix<BaseFloat>& Y)
+  PropagateF(const CuMatrix<BaseFloat>& X, CuMatrix<BaseFloat>& Y)
   {
 	  PropagateFnc(X,Y);
   }
   inline void 
   CuComponent::
-  BackpropagateF(CuMatrix<BaseFloat>& X, CuMatrix<BaseFloat>& Y)
+  BackpropagateF(const CuMatrix<BaseFloat>& X, CuMatrix<BaseFloat>& Y)
   {
 	  BackpropagateFnc(X,Y);
   }