add NewTensor() to generate an empty XTensor

source/tensor/XTensor.cpp

@@ -2064,6 +2064,13 @@ void InitTensor(XTensor * tensor, const XTensor * reference)
                reference->dataType, reference->denseRatio, 
                reference->devID, reference->mem);
 }
+    
+/* generate a XTensor with no initialization */
+XTensor * NewTensor()
+{
+    XTensor * tensor = new XTensor();
+    return tensor;
+}
 
 /* 
 generate a XTensor 

source/tensor/XTensor.h

@@ -438,6 +438,9 @@ void InitTensor5D(XTensor * tensor, const int d0, const int d1, const int d2, co
 
 /* initialize a tensor with a reference tensor */
 void InitTensor(XTensor * tensor, const XTensor * reference);
+    
+/* generate a XTensor with no initialization */
+XTensor * NewTensor();
 
 /* generate a XTensor */
 XTensor * NewTensor(const int myOrder, const int * myDimSize, const TENSOR_DATA_TYPE myDataType = X_FLOAT,