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 # File i\_fmu\_logic.h

 Last update: 22.04.2026 

![](https://img.shields.io/badge/language-C%2B%2B-blue "C++")

**Location**: `core/lifecycle/fmu_activity/i_fmu_logic.h`

## Classes

- [simulation\_framework::core::lifecycle::IFmuLogic](classsimulation__framework_1_1core_1_1lifecycle_1_1IFmuLogic.md#classsimulation__framework_1_1core_1_1lifecycle_1_1IFmuLogic)

## Namespaces

- [simulation\_framework](namespacesimulation__framework.md#namespacesimulation__framework)
- [simulation\_framework::core](namespacesimulation__framework_1_1core.md#namespacesimulation__framework_1_1core)
- [simulation\_framework::core::lifecycle](namespacesimulation__framework_1_1core_1_1lifecycle.md#namespacesimulation__framework_1_1core_1_1lifecycle)

## Includes

- core/export/simfwk\_core\_export.h
- [core/lifecycle/fmu\_activity/fmu\_config.h](fmu__config_8h.md#fmu__config_8h)
- core/lifecycle/fmu\_activity/fmu\_state.h
- 
- 

## Included by

- [fmu\_base\_activity.h](fmu__base__activity_8h.md#fmu__base__activity_8h)
- [fmu\_logic.h](fmu__logic_8h.md#fmu__logic_8h)

## Source

```cpp


#ifndef SIMFWK_CORE_LIFECYCLE_FMUACTIVITY_IFMULOGIC_H
#define SIMFWK_CORE_LIFECYCLE_FMUACTIVITY_IFMULOGIC_H

#include "core/export/simfwk_core_export.h"
#include "core/lifecycle/fmu_activity/fmu_config.h"
#include "core/lifecycle/fmu_activity/fmu_state.h"
#include <set>
#include <string>

namespace simulation_framework
{
namespace core
{

namespace lifecycle
{

class SIMFWK_CORE_API IFmuLogic
{
  public:
    virtual ~IFmuLogic() = default;

    virtual void SetupExperiment(double start = 0, double stop = 0, double tolerance = 0) = 0;

    virtual void EnterInitialization() = 0;

    virtual void ExitInitialization() = 0;

    virtual void Setup(double start = 0, double stop = 0, double tolerance = 0) = 0;

    virtual bool Step(double step_size) = 0;

    virtual FmuInOutMap InitInOutMap(std::set<std::string> variable_names) = 0;

    virtual bool Step(double step_size, const FmuInOutMap& input) = 0;

    virtual void SetInitializationParams(const FmuInOutMap& params) = 0;

    virtual void SetInputs(const FmuInOutMap& inputs) = 0;

    virtual FmuInOutMap GetOutputs() const = 0;

    virtual void GetOutputs(FmuInOutMap& requested_outputs) const = 0;

    virtual FmuState GetFmuState() const = 0;
};

}  // namespace lifecycle
}  // namespace core
}  // namespace simulation_framework

#endif  // SIMFWK_CORE_LIFECYCLE_FMUACTIVITY_IFMULOGIC_H

```