#ifndef CAFFE_COMMON_HPP_
#define CAFFE_COMMON_HPP_

#include 
#include 
#include 

#include 
#include 
#include   // NOLINT(readability/streams)
#include   // NOLINT(readability/streams)
#include 
#include 
#include 
#include 
#include   // pair
#include 

#include "caffe/util/device_alternate.hpp"

// Convert macro to string
#define STRINGIFY(m) #m
#define AS_STRING(m) STRINGIFY(m)

// gflags 2.1 issue: namespace google was changed to gflags without warning.
// Luckily we will be able to use GFLAGS_GFLAGS_H_ to detect if it is version
// 2.1. If yes, we will add a temporary solution to redirect the namespace.
// TODO(Yangqing): Once gflags solves the problem in a more elegant way, let's
// remove the following hack.
#ifndef GFLAGS_GFLAGS_H_
namespace gflags = google;
#endif  // GFLAGS_GFLAGS_H_

// Disable the copy and assignment operator for a class.
#define DISABLE_COPY_AND_ASSIGN(classname) \
private:\
  classname(const classname&);\
  classname& operator=(const classname&)

// Instantiate a class with float and double specifications.
#define INSTANTIATE_CLASS(classname) \
  char gInstantiationGuard##classname; \
  template class classname; \
  template class classname

#define INSTANTIATE_LAYER_GPU_FORWARD(classname) \
  template void classname::Forward_gpu( \
      const std::vector& bottom, \
      const std::vector& top); \
  template void classname::Forward_gpu( \
      const std::vector& bottom, \
      const std::vector& top);

#define INSTANTIATE_LAYER_GPU_BACKWARD(classname) \
  template void classname::Backward_gpu( \
      const std::vector& top, \
      const std::vector& propagate_down, \
      const std::vector& bottom); \
  template void classname::Backward_gpu( \
      const std::vector& top, \
      const std::vector& propagate_down, \
      const std::vector& bottom)

#define INSTANTIATE_LAYER_GPU_FUNCS(classname) \
  INSTANTIATE_LAYER_GPU_FORWARD(classname); \
  INSTANTIATE_LAYER_GPU_BACKWARD(classname)

// A simple macro to mark codes that are not implemented, so that when the code
// is executed we will see a fatal log.
#define NOT_IMPLEMENTED LOG(FATAL)