Added comment.

theano/sandbox/cuda/cuda_ndarray.cu

@@ -593,6 +593,12 @@ __global__ void k_copy_reshape_rowmajor(unsigned int numEls,
         z_i[0] = a_i[0]; //copy one lousy float!
     }
 }
+
+// Reshape self to the new shape gived by the tuple shape.
+//
+// If self is c contiguous, it return a view. Otherwise it always do a copy.
+// TODO: make it return a view when the strides allow it event if it is not 
+//       c contiguous
 PyObject * CudaNdarray_Reshape(CudaNdarray * self, PyObject * shape)
 {
     // check shape tuple
@@ -717,6 +723,7 @@ PyObject * CudaNdarray_View(CudaNdarray * self)
     }
     return (PyObject*)rval;
 }
+
 PyObject * CudaNdarray_SetStride(CudaNdarray * self, PyObject *args)
 {
     int pos, stride;