Limit some XTensor functions with const.

source/tensor/XTensor.cpp

@@ -714,7 +714,7 @@ int XTensor::GetSize() const
 }
 
 /* get the size of the memory space used */
-int XTensor::GetDataSizeInChar()
+int XTensor::GetDataSizeInChar() const
 {
     if(isSparse){
         int num = int(unitNum * denseRatio + 1);
@@ -732,7 +732,7 @@ get unit size in terms of "dataType"
 >> myDataType - type of unit
 << return - unit size
 */
-int XTensor::GetUnitSize(TENSOR_DATA_TYPE myDataType)
+int XTensor::GetUnitSize(TENSOR_DATA_TYPE myDataType) const
 {
     if(myDataType == X_INT)
         return sizeof(int);
@@ -752,7 +752,7 @@ get offset (2D)
 >> row - index of demension 0
 >> col - index of demension 1
 */
-MTYPE XTensor::GetOffset2D(int row, int col)
+MTYPE XTensor::GetOffset2D(int row, int col) const
 {
     CheckNTErrors(order == 2, "Cannot get a 2d cell for a tensor whose order is not 2!");
     CheckNTErrors(row >= 0 && row < dimSize[0], "dimension 0 is out of range!");
@@ -767,7 +767,7 @@ get offset (3D)
 >> d1 - index of demension 1
 >> d2 - index of demension 2
 */
-MTYPE XTensor::GetOffset3D(int d0, int d1, int d2)
+MTYPE XTensor::GetOffset3D(int d0, int d1, int d2) const
 {
     CheckNTErrors(order == 3, "Cannot get a 3d cell for a tensor whose order is not 2!");
     CheckNTErrors(d0 >= 0 && d0 < dimSize[0], "dimension 0 is out of range!");
@@ -982,7 +982,7 @@ void XTensor::SetDataBatchedWithValues(MTYPE * offsets, void * values, int num)
 >> num - number of data items
 >> beg - where we start this in the data array of the tensor
 */
-bool XTensor::CheckData(const void * d, int num, int beg)
+bool XTensor::CheckData(const void * d, int num, int beg) const
 {
     if (data == NULL || d == NULL)
         return false;
@@ -1026,7 +1026,7 @@ bool IsFloatEqual(DTYPE a, DTYPE b, float absError, float relError)
 }
 
 /* check whether the data array is the same as the "answer" */
-bool XTensor::CheckData(const void * d, int num, float tolerance, int beg)
+bool XTensor::CheckData(const void * d, int num, float tolerance, int beg) const
 {
     if (data == NULL || d == NULL)
         return false;
@@ -1102,7 +1102,7 @@ get the value of a cell with the index
 >> size - size of the index
 << return - cell value
 */
-DTYPE XTensor::Get(int index[], int size)
+DTYPE XTensor::Get(int index[], int size) const
 {
     CheckNTErrors(dataType == DEFAULT_DTYPE, "The tensor is not in the default type.");
 
@@ -1114,7 +1114,7 @@ get the value of a cell with its offset
 >> offset - offset in the array
 << return - cell value
 */
-DTYPE XTensor::Get(int offset)
+DTYPE XTensor::Get(int offset) const
 {
     CheckNTErrors(dataType == DEFAULT_DTYPE, "The tensor is not in the default type.");
     CheckNTErrors(offset >= 0 && offset < unitNum, "Invalid index!");
@@ -1166,7 +1166,7 @@ get the value of a cell in a 1d tensor in default type
 >> i - idex
 << return - value of cell(i) in float
 */
-DTYPE XTensor::Get1D(int i)
+DTYPE XTensor::Get1D(int i) const
 {
     CheckNTErrors((order == 1), "Cannot get a 2d cell for a tensor whose order is not 2!");
     CheckNTErrors((i >= 0 && i < dimSize[0]), "dimension 0 is out of range!");
@@ -1203,7 +1203,7 @@ get the value of a cell in a 3d tensor
 >> d1 - index of dimension 1
 >> d2 - index of dimension 2
 */
-DTYPE XTensor::Get3D(int d0, int d1, int d2)
+DTYPE XTensor::Get3D(int d0, int d1, int d2) const
 {
     CheckNTErrors((order == 3), "Cannot get a 2d cell for a tensor whose order is not 2!");
     CheckNTErrors((d0 >= 0 && d0 < dimSize[0]), "dimension 0 is out of range!");
@@ -1221,7 +1221,7 @@ DTYPE XTensor::Get3D(int d0, int d1, int d2)
 get the int value of a cell by its offset
 >> offset - offset of the item
 */
-int XTensor::GetInt(int offset)
+int XTensor::GetInt(int offset) const
 {
     CheckNTErrors(dataType == X_INT, "The tensor is not in the integer type.");
     CheckNTErrors(offset >= 0 && offset < unitNum, "Invalid index!");
@@ -1238,7 +1238,7 @@ get the value of a cell in a 1d tensor in int type
 >> i - index
 << return - value of cell(i) in int
 */
-int XTensor::Get1DInt(int i)
+int XTensor::Get1DInt(int i) const
 {
     CheckNTErrors(order == 1, "Cannot get a 2d cell for a tensor whose order is not 2!");
     CheckNTErrors(i >= 0 && i < dimSize[0], "dimension 0 is out of range!");
@@ -1256,7 +1256,7 @@ get the value of a cell in a 2d tensor in int type
 >> mi - column index
 << return - value of cell(ni, mi) in int
 */
- int XTensor::Get2DInt(int ni, int mi)
+ int XTensor::Get2DInt(int ni, int mi) const
 {
     CheckNTErrors(order == 2, "Cannot get a 2d cell for a tensor whose order is not 2!");
     CheckNTErrors(ni >= 0 && ni < dimSize[0], "dimension 0 is out of range!");
@@ -1276,7 +1276,7 @@ get the value of a cell in a 3d tensor in int type
 >> d2 - index of dimension 2
 << return - value of cell(d0, d1, d2) in int
 */
-int XTensor::Get3DInt(int d0, int d1, int d2)
+int XTensor::Get3DInt(int d0, int d1, int d2) const
 {
     CheckNTErrors(order == 3, "Cannot get a 2d cell for a tensor whose order is not 2!");
     CheckNTErrors(d0 >= 0 && d0 < dimSize[0], "dimension 0 is out of range!");
@@ -1295,7 +1295,7 @@ get the value of a cell in the sparse tensor
 >> i - i-th tuple in the tuple list of the sparse tensor
 << return - value of the tuple
 */
-DTYPE XTensor::GetInSparse(int i)
+DTYPE XTensor::GetInSparse(int i) const
 {
     CheckNTErrors(i >= 0 && i < unitNum, "Index is out of range!");
     CheckNTErrors(dataType == DEFAULT_DTYPE, "The tensor is not in default type.");
@@ -1311,7 +1311,7 @@ get the key value of a tuple in a sparse tensor
 >> i - i-th tuple in the tuple list of the sparse tensor
 << return - key of the tuple
 */
-int XTensor::GetKeyInSparse(int i)
+int XTensor::GetKeyInSparse(int i) const
 {
     CheckNTErrors(i >= 0 && i < unitNum, "Index is out of range!");
     CheckNTErrors(dataType == DEFAULT_DTYPE, "The tensor is not in default type.");
@@ -1524,7 +1524,7 @@ increase the value of a cell in a 2d tensor
 }
 
 /* get the number of non-zero elements (in a sparse tensor) */
-int XTensor::GetNonzeroSize()
+int XTensor::GetNonzeroSize() const
 {
     if(!isSparse){
         XPRINT(1, stderr, "WARNING! Counting non-zero elements in a dense tensor might be slow!\n");

source/tensor/XTensor.h

@@ -287,16 +287,16 @@ public:
     int GetSize() const;
 
     /* get size of the memory used */
-    int GetDataSizeInChar();
+    int GetDataSizeInChar() const;
 
     /* get unit size in terms of "dataType" */
-    int GetUnitSize(TENSOR_DATA_TYPE myDataType);
+    int GetUnitSize(TENSOR_DATA_TYPE myDataType) const;
 
     /* get offset (2D) */
-    MTYPE GetOffset2D(int row, int col);
+    MTYPE GetOffset2D(int row, int col) const;
 
     /* get offset (3D) */
-    MTYPE GetOffset3D(int d0, int d1, int d2);
+    MTYPE GetOffset3D(int d0, int d1, int d2) const;
 
     /* a tensor with all entries of 0 */
     void SetZeroAll(XStream * stream = NULL);
@@ -320,10 +320,10 @@ public:
     void SetDataBatchedWithValues(MTYPE * offsets, void * values, int num);
 
     /* check whether the data array is the same as the answer */
-    bool CheckData(const void * answer, int num, int beg = 0);
+    bool CheckData(const void * answer, int num, int beg = 0) const;
 
     /* check whether the data array is the same as the answer */
-    bool CheckData(const void * answer, int num, float tolerance, int beg = 0);
+    bool CheckData(const void * answer, int num, float tolerance, int beg = 0) const;
     
     /* set the pointer to "data" */
     void SetDataPointer();
@@ -332,40 +332,40 @@ public:
     void SetAscendingOrder(int dim);
 
     /* get the value of a cell with the index */
-    DTYPE Get(int index[], int size = -1);
+    DTYPE Get(int index[], int size = -1) const;
     
     /* get the value of a cell with the offset */
-    DTYPE Get(int offset);
+    DTYPE Get(int offset) const;
 
     /* get the pointer to a cell */
     void * GetCell(int index[], int size = -1) const;
 
     /* get the default type value of a cell in a 1d tensor */
-    DTYPE Get1D(int i);
+    DTYPE Get1D(int i) const;
 
     /* get the default type value of a cell in a 2d tensor */
     DTYPE Get2D(int ni, int mi) const;
     
     /* get the default type value of a cell in a 3d tensor */
-    DTYPE Get3D(int d0, int d1, int d2);
+    DTYPE Get3D(int d0, int d1, int d2) const;
 
     /* get the int value of a cell by its offset */
-    int GetInt(int offset);
+    int GetInt(int offset) const;
     
     /* get the int value of a cell in a 1d tensor */
-    int Get1DInt(int i);
+    int Get1DInt(int i) const;
 
     /* get the int value of a cell in a 2d tensor */
-    int Get2DInt(int ni, int mi);
+    int Get2DInt(int ni, int mi) const;
     
     /* get the int value of a cell in a 3d tensor */
-    int Get3DInt(int d0, int d1, int d2);
+    int Get3DInt(int d0, int d1, int d2) const;
 
     /* get the value of a cell in a sparse tensor */
-    DTYPE GetInSparse(int i);
+    DTYPE GetInSparse(int i) const;
 
     /* get the key value of a tuple in a sparse tensor */
-    int GetKeyInSparse(int i);
+    int GetKeyInSparse(int i) const;
 
     /* set the value of a cell */
     bool Set(DTYPE value, int index[], int size = -1);
@@ -401,7 +401,7 @@ public:
     bool Add2D(DTYPE value, int ni, int mi);
 
     /* get the number of non-zero elements (in a sparse tensor) */
-    int GetNonzeroSize();
+    int GetNonzeroSize() const;
 
     /* set the tensor as "temporary" */
     void SetTMPFlag(bool myIsTmp = true);