code for tensor order = -1 (uninitialized)

source/network/XBackwardNode.cpp

@@ -129,7 +129,6 @@ void XNodeGrad::ComputeMath(XTensor * node)
         CheckNTErrors(income.tailNum == 2, "Wrong input tensor number for MULTIPLY!");
         XTensor * a = income.tails[0]; 
         XTensor * b = income.tails[1];
-        int leadDim = income.GetParamInt(0);
         XNoder::MakeGrad(a);
         XNoder::MakeGrad(b);
 
@@ -142,4 +141,4 @@ void XNodeGrad::ComputeMath(XTensor * node)
     }
 }
 
-}
\ No newline at end of file
+}

source/tensor/XTensor.cpp

@@ -134,8 +134,6 @@ constructor
 XTensor::XTensor(const int myOrder, const int * myDimSize, const TENSOR_DATA_TYPE myDataType,
                  const float myDenseRatio, int myDevID, XMem * myMem)
 {
-    CheckNTErrors((myOrder > 0), "Illegal tensor order1");
-
     Init();
     SetDataPointer();
 
@@ -144,7 +142,8 @@ XTensor::XTensor(const int myOrder, const int * myDimSize, const TENSOR_DATA_TYP
     mem = myMem;
     devID = myMem != NULL ? myMem->devID : myDevID;
 
-    Resize(myOrder, myDimSize, myDataType, myDenseRatio);
+    if(order >= 0)
+        Resize(myOrder, myDimSize, myDataType, myDenseRatio);
 }
 
 /* copy constructor */
@@ -1999,10 +1998,12 @@ generate a copy of XTensor
 */
 XTensor * NewTensor(XTensor * a, bool isFilledData)
 {
+    int dims[MAX_TENSOR_DIM_NUM];
+    
     CheckNTErrors((a != NULL), "Empty input!");
-
-    int * dims = new int[a->order];
-    memcpy(dims, a->dimSize, sizeof(int) * a->order);
+    
+    if(a->order > 0)
+        memcpy(dims, a->dimSize, sizeof(int) * a->order);
 
     if(!isFilledData)
         dims[0] = -dims[0];
@@ -2011,8 +2012,6 @@ XTensor * NewTensor(XTensor * a, bool isFilledData)
                                       a->dataType, a->denseRatio,
                                       a->devID, a->mem);
 
-    delete[] dims;
-
     return newTensor;
 
 }

source/tensor/function/Loss.cpp

@@ -204,12 +204,11 @@ DTYPE LossComputeForLogScale(XTensor * gold, XTensor * output,
                              LOSS_FUNCTION_NAME LFName,
                              int leadDim, int gBeg, int gLen, int oBeg)
 {
-    CheckNTErrors((gLen >= 0 && gLen <= output->unitNum), "Illegal input length!");
-    CheckNTErrors((XTensor::IsIdentical(gold, output)), "The input tensors must be of the same size!");
-    CheckNTErrors((gold->dimSizeRDI[0] == 1 && output->dimSizeRDI[0] == 1), "TODO!");
-    CheckNTErrors((gold->order > leadDim && leadDim >= 0), "Illegal leading dimension!");
-    CheckNTErrors((gold->dataType == DEFAULT_DTYPE && output->dataType == DEFAULT_DTYPE),
-                   "TODO!");
+    CheckNTErrors(gLen >= 0 && gLen <= output->unitNum, "Illegal input length!");
+    CheckNTErrors(XTensor::IsIdentical(gold, output), "The input tensors must be of the same size!");
+    CheckNTErrors(gold->dimSizeRDI[0] == 1 && output->dimSizeRDI[0] == 1, "TODO!");
+    CheckNTErrors(gold->order > leadDim && leadDim >= 0, "Illegal leading dimension!");
+    CheckNTErrors(gold->dataType == DEFAULT_DTYPE && output->dataType == DEFAULT_DTYPE, "TODO!");
 
     int leadDimRDI = output->order - leadDim - 1;
     int dimensionSize = output->dimSizeRDI[leadDimRDI];
@@ -384,14 +383,16 @@ void LossBackward(XTensor * dedy, XTensor * t, XTensor * y,
                   LOSS_FUNCTION_NAME LFName, 
                   int leadDim, int tBeg, int tLen, int yBeg)
 {
+    if(t->order < 0)
+        return;
+    
     if (y->devID < 0) {
-        CheckNTErrors((tLen <= y->unitNum), "Illegal input length!");
-        CheckNTErrors((XTensor::IsIdentical(t, y)&& XTensor::IsIdentical(dedy, y)), 
+        CheckNTErrors(tLen <= y->unitNum, "Illegal input length!");
+        CheckNTErrors(XTensor::IsIdentical(t, y)&& XTensor::IsIdentical(dedy, y),
                       "The input tensors must be of the same size!");
-        CheckNTErrors(((dedy->devID == t->devID) && (dedy->devID == y->devID)), "Tensor must be on the same device!");
-        CheckNTErrors((t->order > leadDim), "Illegal leading dimension!");
-        CheckNTErrors((t->dataType == DEFAULT_DTYPE && y->dataType == DEFAULT_DTYPE),
-                             "TODO!");
+        CheckNTErrors((dedy->devID == t->devID) && (dedy->devID == y->devID), "Tensor must be on the same device!");
+        CheckNTErrors(t->order > leadDim, "Illegal leading dimension!");
+        CheckNTErrors(t->dataType == DEFAULT_DTYPE && y->dataType == DEFAULT_DTYPE, "TODO!");
 
         int leadDimRDI = leadDim >= 0 ? y->order - leadDim - 1 : -1;
         if(leadDimRDI < 0){