#ifndef CAFFE2_OPERATORS_SIGMOID_OP_H_
#define CAFFE2_OPERATORS_SIGMOID_OP_H_

#include <vector>

#include "caffe2/operators/elementwise_ops.h"

namespace caffe2 {

template <class Context>
struct SigmoidFunctor {
  template <typename T>
  bool operator()(const int N, const T* X, T* Y, Context* context) const;
};

template <class Context>
struct SigmoidGradientFunctor {
  template <typename T>
  bool Forward(
      const std::vector<int>& Y_dims,
      const std::vector<int>& dY_dims,
      const T* Y,
      const T* dY,
      T* dX,
      Context* context) const;
};

} // namespace caffe2

#endif // CAFFE2_OPERATORS_SIGMOID_OP_H_
