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#ifndef CAFFE2_OPERATORS_ELEMENTWISE_OPS_UTILS_H_
#define CAFFE2_OPERATORS_ELEMENTWISE_OPS_UTILS_H_
#include <tuple>
#include <vector>
#include "caffe2/core/context.h"
#include "caffe2/core/tensor.h"
namespace caffe2 {
namespace elementwise_ops_utils {
CAFFE2_API std::tuple<size_t, size_t, size_t>
ComputeLegacyBroadcastSizes(const Tensor& A, const Tensor& B, int axis);
CAFFE2_API std::vector<int> ComputeBinaryBroadcastForwardDims(
const std::vector<int>& A_dims,
const std::vector<int>& B_dims);
CAFFE2_API void ComputeBinaryBroadcastBackwardAxes(
const std::vector<int>& A_dims,
const std::vector<int>& B_dims,
std::vector<int>* A_axes,
std::vector<int>* B_axes);
CAFFE2_API void ComputeBinaryBroadcastBackwardDims(
const std::vector<int>& A_dims,
const std::vector<int>& B_dims,
std::vector<int>* A_back_dims,
std::vector<int>* B_back_dims);
} // namespace elementwise_ops_utils
} // namespace caffe2
#endif // CAFFE2_OPERATORS_ELEMENTWISE_OPS_UTILS_H_
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