residual_module.hpp

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#pragma once
 
#include <optional>
#include "pulsatrix/module.hpp"
 
namespace pulsatrix {
 
class ResidualModule : public Module {
public:
    ResidualModule(Module* inner, DeviceBackend* backend);
 
    [[nodiscard]] Tensor backward(const Tensor& grad_output) override;
 
    [[nodiscard]] OpType op_type() const override { return OpType::Elementwise; }
 
    [[nodiscard]] Tensor propagate_relevance(const Tensor& relevance_out, const LRPRuleConfig& config) override;
 
    [[nodiscard]] std::vector<NamedParamRef> named_parameters() override;
 
    void set_training(bool training) override;
 
    [[nodiscard]] Module& inner() { return *inner_; }
 
 
    [[nodiscard]] std::optional<DeviceType> compute_device() const override { return backend_->device(); }
 
protected:
    [[nodiscard]] Tensor forward_impl(const Tensor& input) override;
 
private:
    Module* inner_;
    DeviceBackend* backend_;
 
    Tensor last_x_;    
    Tensor last_f_x_;  
    bool has_forwarded_ = false;
};
 
}  // namespace pulsatrix