text: /* NiuTrans.Tensor - an open-source tensor library
  * Copyright (C) 2017, Natural Language Processing Lab, Northestern University.
  * All rights reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
  
  /*
   * $Created by: Xu Chen (email: hello_master1954@163.com) 2018-08-01
   */
  
  #ifndef __DIV_H__
  #define __DIV_H__
  
  #include "../../XTensor.h"
  
  namespace nts { // namespace nts(NiuTrans.Tensor)
  
  /* 
  element-wise division of two tensors:
  c(i) = a(i)/b(i) + \alpha * c(i) 
  where i is the index of the element
  */
  void _Div(const XTensor * a, const XTensor * b, XTensor * c, DTYPE alpha = 0.0, int leadingDim = 0);
  
  /* 
  element-wise division of two tensors (do it on site)
  keep the result in the input tensor a and return nothing
  a(i) = a(i)/b(i) + \alpha * a(i) 
  where i is the index of the element 
  */
  void _DivMe(XTensor * a, const XTensor * b, DTYPE alpha = 0.0, int leadingDim = 0);
  void DivMe(XTensor & a, const XTensor & b, DTYPE alpha = 0.0, int leadingDim = 0);
  
  /* 
  element-wise division of two tensors (return an XTensor structure)
  make a new tensor to keep the result and return it
  c(i) = a(i)/b(i)
  where i is the index of the element 
  */
  XTensor Div(const XTensor &a, const XTensor &b, DTYPE alpha = 0.0, int leadingDim = 0);
  
  /*
  element-wise division of two tensors:
  c(i) = a(i)/b(i) + \alpha * c(i)
  where i is the index of the element
  */
  void Div(const XTensor &a, const XTensor &b, XTensor &c, DTYPE alpha = 0.0, int leadingDim = 0);
  
  } // namespace nts(NiuTrans.Tensor)
  
  #endif // __DIV_H__