/*
 * This file belongs to the OpenModelica Run-Time System
 *
 * Copyright (c) 1998-2026, Open Source Modelica Consortium (OSMC), c/o Linköpings
 * universitet, Department of Computer and Information Science, SE-58183 Linköping, Sweden. All rights
 * reserved.
 *
 * THIS PROGRAM IS PROVIDED UNDER THE TERMS OF THE BSD NEW LICENSE OR THE
 * AGPL VERSION 3 LICENSE OR THE OSMC PUBLIC LICENSE (OSMC-PL) VERSION 1.8. ANY
 * USE, REPRODUCTION OR DISTRIBUTION OF THIS PROGRAM CONSTITUTES RECIPIENT'S
 * ACCEPTANCE OF THE BSD NEW LICENSE OR THE OSMC PUBLIC LICENSE OR THE AGPL
 * VERSION 3, ACCORDING TO RECIPIENTS CHOICE.
 *
 * The OpenModelica software and the OSMC (Open Source Modelica Consortium) Public License
 * (OSMC-PL) are obtained from OSMC, either from the above address, from the URLs:
 * http://www.openmodelica.org or https://github.com/OpenModelica/ or
 * http://www.ida.liu.se/projects/OpenModelica, and in the OpenModelica distribution. GNU
 * AGPL version 3 is obtained from: https://www.gnu.org/licenses/licenses.html#GPL. The BSD NEW
 * License is obtained from: http://www.opensource.org/licenses/BSD-3-Clause.
 *
 * This program is distributed WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, EXCEPT AS EXPRESSLY
 * SET FORTH IN THE BY RECIPIENT SELECTED SUBSIDIARY LICENSE CONDITIONS OF
 * OSMC-PL.
 *
 */

#ifndef __FMU1_MODEL_INTERFACE_H__
#define __FMU1_MODEL_INTERFACE_H__

#include "fmiModelFunctions.h"
#include "../simulation_data.h"

#ifdef __cplusplus
extern "C" {
#endif

// macros used to define variables
#define pos(z) comp->isPositive[z]
#define copy(vr, value) setString(comp, vr, value)

#define not_modelError (modelInstantiated|modelInitialized|modelTerminated)

typedef enum {
  modelInstantiated = 1<<0,
  modelInitialized  = 1<<1,
  modelTerminated   = 1<<2,
  modelError        = 1<<3
} ModelState;

typedef struct {
  fmiString instanceName;
  fmiString GUID;
  fmiCallbackFunctions functions;
  fmiBoolean loggingOn;
  fmiEventInfo eventInfo;
  ModelState state;
  /* Set by the fmiSetReal/Integer/Boolean/String, fmiSetTime and fmiSetContinuousStates functions
     and cleared once the model has been re-evaluated, so that fmiGetReal/Integer/Boolean/String
     recompute direct-feedthrough outputs after an input changed (mirrors fmu2_model_interface.c).
     Without it a stateless algebraic model such as y = 2*u never updates its output. See #15838. */
  fmiBoolean _need_update;
  DATA* fmuData;
  threadData_t *threadData;
} ModelInstance;

#ifdef __cplusplus
}
#endif

#endif
