var.h

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#ifndef INFINI_OPS_BASE_VAR_H_
#define INFINI_OPS_BASE_VAR_H_
 
#include <optional>
#include <vector>
 
#include "operator.h"
 
namespace infini::ops {
 
class Var : public Operator<Var> {
 public:
  Var(const Tensor input, const std::optional<std::vector<int64_t>> dim,
      const bool unbiased, const bool keepdim, Tensor out)
      : input_shape_{input.shape()},
        input_strides_{input.strides()},
        input_type_{input.dtype()},
        out_shape_{out.shape()},
        out_strides_{out.strides()},
        out_type_{out.dtype()},
        dim_{dim},
        unbiased_{unbiased},
        keepdim_{keepdim},
        device_index_{out.device().index()} {}
 
  Var(const Tensor input, const std::optional<std::vector<int64_t>> dim,
      const std::optional<double> correction, const bool keepdim, Tensor out)
      : input_shape_{input.shape()},
        input_strides_{input.strides()},
        input_type_{input.dtype()},
        out_shape_{out.shape()},
        out_strides_{out.strides()},
        out_type_{out.dtype()},
        dim_{dim},
        keepdim_{keepdim},
        correction_{correction},
        device_index_{out.device().index()} {}
 
  virtual void operator()(const Tensor input,
                          const std::optional<std::vector<int64_t>> dim,
                          const bool unbiased, const bool keepdim,
                          Tensor out) const = 0;
 
  virtual void operator()(const Tensor input,
                          const std::optional<std::vector<int64_t>> dim,
                          const std::optional<double> correction,
                          const bool keepdim, Tensor out) const = 0;
 
 protected:
  Tensor::Shape input_shape_;
 
  Tensor::Strides input_strides_;
 
  DataType input_type_;
 
  Tensor::Shape out_shape_;
 
  Tensor::Strides out_strides_;
 
  DataType out_type_;
 
  std::optional<std::vector<int64_t>> dim_{};
 
  bool unbiased_{};
 
  bool keepdim_{};
 
  std::optional<double> correction_{};
 
  int device_index_{0};
};
 
}  // namespace infini::ops
 
#endif