#ifndef NATIVE_RUNTIME_H
#define NATIVE_RUNTIME_H
#include "model.h"
#include <stddef.h>
#include <stdio.h>
#include <stdint.h>
#ifndef NFRICTIONS
#define NFRICTIONS 0
#endif
#ifndef NCONTACTS
#define NCONTACTS 0
#endif
#define NATIVE_JACOBIAN_STATS_COUNT 3
typedef struct {
    double start, stop, sample_step, max_step, rtol, timeout;
    int bdf, record_samples;
    const char *cancel_path;
} NativeOptions;
typedef struct {
    int seen;
    double first_time, first_temperature, extreme_time, extreme_temperature;
} NativePropertyWarning;
typedef struct {
    NativeOptions options;
    double *times, *states;
    size_t count, capacity, sample_index;
    /* Result history is a bounded buffer, independent of integrator memory. */
    size_t buffered, committed, output_count;
    FILE *sample_file, *output_file;
    const char *sample_path, *output_blocks_path;
    int storage_control, storage_failed;
    double final_time, final_state[NSTATES];
    double wall_start, cpu_start, solve_seconds, solve_cpu_seconds, last_progress;
    double max_accepted_step;
    unsigned long nfev, accepted, rejected, events, starts, njev, nlu;
    /* Structure coloring is automatic; verification is diagnostic only. */
    int jacobian_verify, jacobian_colored;
    unsigned long jacobian_rhs, jacobian_colored_evals, jacobian_fallbacks;
    unsigned long jacobian_checks, jacobian_mismatches, cvode_rhs, linear_rhs;
    unsigned long jacobian_gas_evaluations, jacobian_gas_reuses;
    /* PH, density, pipe. Keep runtime-only harnesses independent of kernels.h. */
    unsigned long jacobian_scalar_evaluations[NATIVE_JACOBIAN_STATS_COUNT], jacobian_scalar_reuses[NATIVE_JACOBIAN_STATS_COUNT];
    unsigned long same_time_returns, same_time_streak, max_same_time_streak;
    int stagnating, cvode_flag;
    double cvode_return_time, cvode_internal_time, cvode_last_step, cvode_next_step;
    const char *failure_reason, *failure_operation;
    char message_buffer[384];
    int status; /* 0 completed, 1 cancelled, 2 failed */
    const char *message;
    /* Accepted-event latch only; never used by RHS or output force replay. */
#if NCONTACTS
    double contact_last[2*NCONTACTS];
    int contact_direction[2*NCONTACTS], contact_pending[2*NCONTACTS];
#endif
    unsigned long contact_checks, contact_dense, contact_roots;
    unsigned long contact_transitions, contact_clipping;
    NativePropertyWarning property_warnings[6];
} NativeRun;
typedef int (*NativeDense)(void *context, double t, double *state);
double native_wall_time(void);
double native_cpu_time(void);
int native_poll(NativeRun *run, double time);
void native_property_warnings_json(NativeRun *run, FILE *file);
int native_fail(NativeRun *run, const char *reason, const char *operation, const char *message);
int native_rhs(NativeRun *run, double t, const double *y, double *dy);
int native_jacobian_rhs(NativeRun *run, double t, const double *y, double *dy);
int native_append(NativeRun *run, double t, const double *y);
int native_time_boundary_samples(NativeRun *run, double boundary, const double *state);
int native_accept(NativeRun *run, double t, double next, const double *old,
                  const double *trial, NativeDense dense, void *context,
                  double *accepted_time, double *accepted_state);
int native_rk45(NativeRun *run);
int native_bdf(NativeRun *run);
int native_solve(NativeRun *run);
void native_run_free(NativeRun *run);
int native_samples_append(NativeRun *run, double t, const double *state);
int native_samples_flush(NativeRun *run);
int native_samples_outputs(NativeRun *run);
int native_samples_json(NativeRun *run, FILE *file, size_t column);
int64_t native_file_tell(FILE *file);
#endif