fmi-rs 0.3.1

#![allow(non_camel_case_types, non_snake_case)]

use std::ffi::c_void;

use crate::sundials::{sundials_nvector::N_Vector, sundials_types::{SUNContext, sunrealtype}};

// /* -----------------------------------------------------------------
//  * Programmer(s): Scott D. Cohen, Alan C. Hindmarsh, Radu Serban,
//  *                and Dan Shumaker @ LLNL
//  * -----------------------------------------------------------------
//  * SUNDIALS Copyright Start
//  * Copyright (c) 2025-2026, Lawrence Livermore National Security,
//  * University of Maryland Baltimore County, and the SUNDIALS contributors.
//  * Copyright (c) 2013-2025, Lawrence Livermore National Security
//  * and Southern Methodist University.
//  * Copyright (c) 2002-2013, Lawrence Livermore National Security.
//  * All rights reserved.
//  *
//  * See the top-level LICENSE and NOTICE files for details.
//  *
//  * SPDX-License-Identifier: BSD-3-Clause
//  * SUNDIALS Copyright End
//  * -----------------------------------------------------------------
//  * This is the header file for the main CVODE integrator.
//  * -----------------------------------------------------------------*/

// #ifndef _CVODE_H
// #define _CVODE_H

// #include <cvode/cvode_ls.h>
// #include <cvode/cvode_proj.h>
// #include <stdio.h>
// #include <sundials/sundials_core.h>

// #ifdef __cplusplus /* wrapper to enable C++ usage */
// extern "C" {
    // #endif
    
// /* -----------------
//  * CVODE Constants
//  * ----------------- */

// /* lmm */
// #define CV_ADAMS 1
// #define CV_BDF   2
pub const CV_ADAMS: i32 = 1;
pub const CV_BDF: i32 = 2;

// /* itask */
// #define CV_NORMAL   1
// #define CV_ONE_STEP 2
pub const CV_NORMAL: i32 = 1;
pub const CV_ONE_STEP: i32 = 2;

// /* return values */

// #define CV_SUCCESS      0
// #define CV_TSTOP_RETURN 1
// #define CV_ROOT_RETURN  2
pub const CV_SUCCESS: i32 = 0;
pub const CV_TSTOP_RETURN: i32 = 1;
pub const CV_ROOT_RETURN: i32 = 2;

// #define CV_WARNING 99

// #define CV_TOO_MUCH_WORK -1
// #define CV_TOO_MUCH_ACC  -2
// #define CV_ERR_FAILURE   -3
// #define CV_CONV_FAILURE  -4

// #define CV_LINIT_FAIL        -5
// #define CV_LSETUP_FAIL       -6
// #define CV_LSOLVE_FAIL       -7
// #define CV_RHSFUNC_FAIL      -8
// #define CV_FIRST_RHSFUNC_ERR -9
// #define CV_REPTD_RHSFUNC_ERR -10
// #define CV_UNREC_RHSFUNC_ERR -11
// #define CV_RTFUNC_FAIL       -12
// #define CV_NLS_INIT_FAIL     -13
// #define CV_NLS_SETUP_FAIL    -14
// #define CV_CONSTR_FAIL       -15
// #define CV_NLS_FAIL          -16

// #define CV_MEM_FAIL     -20
// #define CV_MEM_NULL     -21
// #define CV_ILL_INPUT    -22
// #define CV_NO_MALLOC    -23
// #define CV_BAD_K        -24
// #define CV_BAD_T        -25
// #define CV_BAD_DKY      -26
// #define CV_TOO_CLOSE    -27
// #define CV_VECTOROP_ERR -28

// #define CV_PROJ_MEM_NULL      -29
// #define CV_PROJFUNC_FAIL      -30
// #define CV_REPTD_PROJFUNC_ERR -31

// #define CV_CONTEXT_ERR -32

// #define CV_UNRECOGNIZED_ERR -99

// /* ------------------------------
//  * User-Supplied Function Types
//  * ------------------------------ */

// typedef int (*CVRhsFn)(sunrealtype t, N_Vector y, N_Vector ydot, void* user_data);
pub type CVRhsFn = unsafe extern "C" fn(t: sunrealtype, y: N_Vector, ydot: N_Vector, user_data: *mut c_void) -> i32;

// typedef int (*CVRootFn)(sunrealtype t, N_Vector y, sunrealtype* gout_1d,
//                         void* user_data);
pub type CVRootFn = unsafe extern "C" fn(t: sunrealtype, y: N_Vector, gout_1d: *mut sunrealtype, user_data: *mut c_void) -> i32;

// typedef int (*CVEwtFn)(N_Vector y, N_Vector ewt, void* user_data);

// /* DEPRECATION NOTICE: this will be removed in v8.0.0 */
// typedef int (*CVMonitorFn)(void* cvode_mem, void* user_data);

unsafe extern "C" {
// /* -------------------
//  * Exported Functions
//  * ------------------- */

// /* Initialization functions */

// SUNDIALS_EXPORT void* CVodeCreate(int lmm, SUNContext sunctx);
pub unsafe fn CVodeCreate(lmm: i32, sunctx: SUNContext) -> *mut c_void;

// SUNDIALS_EXPORT int CVodeInit(void* cvode_mem, CVRhsFn f, sunrealtype t0,
//                               N_Vector y0);
pub unsafe fn CVodeInit(cvode_mem: *mut c_void, f: CVRhsFn, t0: sunrealtype, y0: N_Vector) -> i32;

// SUNDIALS_EXPORT int CVodeReInit(void* cvode_mem, sunrealtype t0, N_Vector y0);
pub unsafe fn CVodeReInit(cvode_mem: *mut c_void, t0: sunrealtype, y0: N_Vector) -> i32;

// SUNDIALS_EXPORT int CVodeResizeHistory(void* cvode_mem, sunrealtype* t_hist_1d,
//                                        N_Vector* y_hist_1d, N_Vector* f_hist_1d,
//                                        int num_y_hist, int num_f_hist);

// /* Tolerance input functions */

// SUNDIALS_EXPORT int CVodeSStolerances(void* cvode_mem, sunrealtype reltol,
//                                       sunrealtype abstol);
// SUNDIALS_EXPORT int CVodeSVtolerances(void* cvode_mem, sunrealtype reltol,
//                                       N_Vector abstol);
pub unsafe fn CVodeSVtolerances(cvode_mem: *mut c_void, reltol: sunrealtype, abstol: N_Vector) -> i32;

// SUNDIALS_EXPORT int CVodeWFtolerances(void* cvode_mem, CVEwtFn efun);

// /* Optional input functions */

// SUNDIALS_EXPORT int CVodeSetOptions(void* cvode_mem, const char* cvid,
//                                     const char* file_name, int argc,
//                                     char* argv[]);
// SUNDIALS_EXPORT int CVodeSetConstraints(void* cvode_mem, N_Vector constraints);
// SUNDIALS_EXPORT int CVodeSetMaxNumConstraintFails(void* cvode_mem, int max_fails);
// SUNDIALS_EXPORT int CVodeSetDeltaGammaMaxLSetup(void* cvode_mem,
//                                                 sunrealtype dgmax_lsetup);
// SUNDIALS_EXPORT int CVodeSetInitStep(void* cvode_mem, sunrealtype hin);
// SUNDIALS_EXPORT int CVodeSetLSetupFrequency(void* cvode_mem, long int msbp);
// SUNDIALS_EXPORT int CVodeSetMaxConvFails(void* cvode_mem, int maxncf);
// SUNDIALS_EXPORT int CVodeSetMaxErrTestFails(void* cvode_mem, int maxnef);
pub unsafe fn CVodeSetMaxErrTestFails(cvode_mem: *mut c_void, maxnef: i32) -> i32;

// SUNDIALS_EXPORT int CVodeSetMaxHnilWarns(void* cvode_mem, int mxhnil);
// SUNDIALS_EXPORT int CVodeSetMaxNonlinIters(void* cvode_mem, int maxcor);
pub unsafe fn CVodeSetMaxNonlinIters(cvode_mem: *mut c_void, maxcor: i32) -> i32;

// SUNDIALS_EXPORT int CVodeSetMaxNumSteps(void* cvode_mem, long int mxsteps);
pub unsafe fn CVodeSetMaxNumSteps(cvode_mem: *mut c_void, mxsteps: i32) -> i32;

// SUNDIALS_EXPORT int CVodeSetMaxOrd(void* cvode_mem, int maxord);
// SUNDIALS_EXPORT int CVodeSetMaxStep(void* cvode_mem, sunrealtype hmax);
// SUNDIALS_EXPORT int CVodeSetMinStep(void* cvode_mem, sunrealtype hmin);
// SUNDIALS_DEPRECATED_EXPORT
// int CVodeSetMonitorFn(void* cvode_mem, CVMonitorFn fn);
// SUNDIALS_DEPRECATED_EXPORT
// int CVodeSetMonitorFrequency(void* cvode_mem, long int nst);
// SUNDIALS_EXPORT int CVodeSetNlsRhsFn(void* cvode_mem, CVRhsFn f);
// SUNDIALS_EXPORT int CVodeSetNonlinConvCoef(void* cvode_mem, sunrealtype nlscoef);
// SUNDIALS_EXPORT int CVodeSetNonlinearSolver(void* cvode_mem,
//                                             SUNNonlinearSolver NLS);
// SUNDIALS_EXPORT int CVodeSetStabLimDet(void* cvode_mem, sunbooleantype stldet);
// SUNDIALS_EXPORT int CVodeSetStopTime(void* cvode_mem, sunrealtype tstop);
// SUNDIALS_EXPORT int CVodeSetInterpolateStopTime(void* cvode_mem,
//                                                 sunbooleantype interp);
// SUNDIALS_EXPORT int CVodeClearStopTime(void* cvode_mem);
// SUNDIALS_EXPORT int CVodeSetUseIntegratorFusedKernels(void* cvode_mem,
//                                                       sunbooleantype onoff);
// SUNDIALS_EXPORT int CVodeSetUserData(void* cvode_mem, void* user_data);
pub unsafe fn CVodeSetUserData(cvode_mem: *mut c_void, user_data: *mut c_void) -> i32;

// /* Optional step adaptivity input functions */

// SUNDIALS_EXPORT
// int CVodeSetEtaFixedStepBounds(void* cvode_mem, sunrealtype eta_min_fx,
//                                sunrealtype eta_max_fx);
// SUNDIALS_EXPORT
// int CVodeSetEtaMaxFirstStep(void* cvode_mem, sunrealtype eta_max_fs);
// SUNDIALS_EXPORT
// int CVodeSetEtaMaxEarlyStep(void* cvode_mem, sunrealtype eta_max_es);
// SUNDIALS_EXPORT
// int CVodeSetNumStepsEtaMaxEarlyStep(void* cvode_mem, long int small_nst);
// SUNDIALS_EXPORT
// int CVodeSetEtaMax(void* cvode_mem, sunrealtype eta_max_gs);
// SUNDIALS_EXPORT
// int CVodeSetEtaMin(void* cvode_mem, sunrealtype eta_min);
// SUNDIALS_EXPORT
// int CVodeSetEtaMinErrFail(void* cvode_mem, sunrealtype eta_min_ef);
// SUNDIALS_EXPORT
// int CVodeSetEtaMaxErrFail(void* cvode_mem, sunrealtype eta_max_ef);
// SUNDIALS_EXPORT
// int CVodeSetNumFailsEtaMaxErrFail(void* cvode_mem, int small_nef);
// SUNDIALS_EXPORT
// int CVodeSetEtaConvFail(void* cvode_mem, sunrealtype eta_cf);

// /* Rootfinding initialization function */
// SUNDIALS_EXPORT int CVodeRootInit(void* cvode_mem, int nrtfn, CVRootFn g);
pub unsafe fn CVodeRootInit(cvode_mem: *mut c_void, nrtfn: i32, g: CVRootFn) -> i32;

// /* Rootfinding optional input functions */

// SUNDIALS_EXPORT int CVodeSetRootDirection(void* cvode_mem, int* rootdir_1d);
// SUNDIALS_EXPORT int CVodeSetNoInactiveRootWarn(void* cvode_mem);

// /* Solver function */
// SUNDIALS_EXPORT int CVode(void* cvode_mem, sunrealtype tout, N_Vector yout,
//                           sunrealtype* tret, int itask);
pub unsafe fn CVode(cvode_mem: *mut c_void, tout: sunrealtype, yout: N_Vector, tret: *mut sunrealtype, itask: i32) -> i32;

// /* Utility functions to update/compute y based on ycor */

// SUNDIALS_EXPORT int CVodeComputeState(void* cvode_mem, N_Vector ycor, N_Vector y);

// /* Dense output function */
// SUNDIALS_EXPORT int CVodeGetDky(void* cvode_mem, sunrealtype t, int k,
//                                 N_Vector dky);

// /* Optional output functions */

// SUNDIALS_DEPRECATED_EXPORT_MSG(
//   "Work space functions will be removed in version 8.0.0")
// int CVodeGetWorkSpace(void* cvode_mem, long int* lenrw, long int* leniw);
// SUNDIALS_EXPORT int CVodeGetNumSteps(void* cvode_mem, long int* nsteps);
// SUNDIALS_EXPORT int CVodeGetNumRhsEvals(void* cvode_mem, long int* nfevals);
// SUNDIALS_EXPORT int CVodeGetNumLinSolvSetups(void* cvode_mem,
//                                              long int* nlinsetups);
// SUNDIALS_EXPORT int CVodeGetNumErrTestFails(void* cvode_mem, long int* netfails);
// SUNDIALS_EXPORT int CVodeGetLastOrder(void* cvode_mem, int* qlast);
// SUNDIALS_EXPORT int CVodeGetCurrentOrder(void* cvode_mem, int* qcur);
// SUNDIALS_EXPORT int CVodeGetCurrentGamma(void* cvode_mem, sunrealtype* gamma);
// SUNDIALS_EXPORT int CVodeGetNumStabLimOrderReds(void* cvode_mem,
//                                                 long int* nslred);
// SUNDIALS_EXPORT int CVodeGetActualInitStep(void* cvode_mem, sunrealtype* hinused);
// SUNDIALS_EXPORT int CVodeGetLastStep(void* cvode_mem, sunrealtype* hlast);
// SUNDIALS_EXPORT int CVodeGetCurrentStep(void* cvode_mem, sunrealtype* hcur);
// SUNDIALS_EXPORT int CVodeGetCurrentState(void* cvode_mem,
//                                          N_Vector* y); // nb::rv_policy::reference
// SUNDIALS_EXPORT int CVodeGetCurrentTime(void* cvode_mem, sunrealtype* tcur);
// SUNDIALS_EXPORT int CVodeGetTolScaleFactor(void* cvode_mem, sunrealtype* tolsfac);
// SUNDIALS_EXPORT int CVodeGetErrWeights(void* cvode_mem, N_Vector eweight);
// SUNDIALS_EXPORT int CVodeGetEstLocalErrors(void* cvode_mem, N_Vector ele);
// SUNDIALS_EXPORT int CVodeGetNumGEvals(void* cvode_mem, long int* ngevals);
// SUNDIALS_EXPORT int CVodeGetRootInfo(void* cvode_mem, int* rootsfound_1d);
pub unsafe fn CVodeGetRootInfo(cvode_mem: *mut c_void, rootsfound_1d: *mut i32) -> i32;

// SUNDIALS_EXPORT int CVodeGetIntegratorStats(
//   void* cvode_mem, long int* nsteps, long int* nfevals, long int* nlinsetups,
//   long int* netfails, int* qlast, int* qcur, sunrealtype* hinused,
//   sunrealtype* hlast, sunrealtype* hcur, sunrealtype* tcur);
// SUNDIALS_EXPORT int CVodeGetNonlinearSystemData(
//   void* cvode_mem, sunrealtype* tcur, N_Vector* ypred, N_Vector* yn,
//   N_Vector* fn, sunrealtype* gamma, sunrealtype* rl1, N_Vector* zn1,
//   void** user_data); // nb::rv_policy::reference
// SUNDIALS_EXPORT int CVodeGetNumNonlinSolvIters(void* cvode_mem,
//                                                long int* nniters);
// SUNDIALS_EXPORT int CVodeGetNumNonlinSolvConvFails(void* cvode_mem,
//                                                    long int* nnfails);
// SUNDIALS_EXPORT int CVodeGetNonlinSolvStats(void* cvode_mem, long int* nniters,
//                                             long int* nnfails);
// SUNDIALS_EXPORT int CVodeGetNumStepSolveFails(void* cvode_mem,
//                                               long int* nncfails);
// SUNDIALS_EXPORT int CVodeGetNumConstraintFails(void* cvode_mem,
//                                                long int* num_fails_out);
// SUNDIALS_EXPORT int CVodeGetNumConstraintCorrections(void* cvode_mem,
//                                                      long int* num_corrections_out);
// SUNDIALS_EXPORT int CVodeGetUserData(void* cvode_mem, void** user_data);
// SUNDIALS_EXPORT int CVodePrintAllStats(void* cvode_mem, FILE* outfile,
//                                        SUNOutputFormat fmt);
// SUNDIALS_EXPORT char* CVodeGetReturnFlagName(long int flag);

// /* Free function */
// SUNDIALS_EXPORT void CVodeFree(void** cvode_mem);
pub unsafe fn CVodeFree(cvode_mem: *mut *mut c_void);

// /* CVLS interface function that depends on CVRhsFn */
// SUNDIALS_EXPORT int CVodeSetJacTimesRhsFn(void* cvode_mem, CVRhsFn jtimesRhsFn);

// #ifdef __cplusplus
// }
// #endif

// #endif
}