text: /* Created by Language version: 6.2.0 */
  /* NOT VECTORIZED */
  #include <stdio.h>
  #include <stdlib.h>
  #include <math.h>
  #include "scoplib_ansi.h"
  #undef PI
  #define nil 0
  #include "md1redef.h"
  #include "section.h"
  #include "nrniv_mf.h"
  #include "md2redef.h"
   
  #if METHOD3
  extern int _method3;
  #endif
  
  #if !NRNGPU
  #undef exp
  #define exp hoc_Exp
  extern double hoc_Exp(double);
  #endif
   
  #define _threadargscomma_ /**/
  #define _threadargs_ /**/
   
  #define _threadargsprotocomma_ /**/
  #define _threadargsproto_ /**/
   	/*SUPPRESS 761*/
  	/*SUPPRESS 762*/
  	/*SUPPRESS 763*/
  	/*SUPPRESS 765*/
  	 extern double *getarg();
   static double *_p; static Datum *_ppvar;
   
  #define t nrn_threads->_t
  #define dt nrn_threads->_dt
  #define gkhbar _p[0]
  #define ih _p[1]
  #define r _p[2]
  #define eh _p[3]
  #define Dr _p[4]
  #define _g _p[5]
  #define _ion_eh	*_ppvar[0]._pval
  #define _ion_ih	*_ppvar[1]._pval
  #define _ion_dihdv	*_ppvar[2]._pval
   
  #if MAC
  #if !defined(v)
  #define v _mlhv
  #endif
  #if !defined(h)
  #define h _mlhh
  #endif
  #endif
   
  #if defined(__cplusplus)
  extern "C" {
  #endif
   static int hoc_nrnpointerindex =  -1;
   /* external NEURON variables */
   /* declaration of user functions */
   static void _hoc_rates(void);
   static int _mechtype;
  extern void _nrn_cacheloop_reg(int, int);
  extern void hoc_register_prop_size(int, int, int);
  extern void hoc_register_limits(int, HocParmLimits*);
  extern void hoc_register_units(int, HocParmUnits*);
  extern void nrn_promote(Prop*, int, int);
  extern Memb_func* memb_func;
   extern void _nrn_setdata_reg(int, void(*)(Prop*));
   static void _setdata(Prop* _prop) {
   _p = _prop->param; _ppvar = _prop->dparam;
   }
   static void _hoc_setdata() {
   Prop *_prop, *hoc_getdata_range(int);
   _prop = hoc_getdata_range(_mechtype);
     _setdata(_prop);
   hoc_retpushx(1.);
  }
   /* connect user functions to hoc names */
   static VoidFunc hoc_intfunc[] = {
   "setdata_Ih", _hoc_setdata,
   "rates_Ih", _hoc_rates,
   0, 0
  };
   /* declare global and static user variables */
  #define p p_Ih
   double p = 5;
  #define rexp rexp_Ih
   double rexp = 0;
  #define rinf rinf_Ih
   double rinf = 0;
  #define tau_r tau_r_Ih
   double tau_r = 0;
  #define usetable usetable_Ih
   double usetable = 1;
   /* some parameters have upper and lower limits */
   static HocParmLimits _hoc_parm_limits[] = {
   "usetable_Ih", 0, 1,
   0,0,0
  };
   static HocParmUnits _hoc_parm_units[] = {
   "p_Ih", "degC",
   "gkhbar_Ih", "mho/cm2",
   "ih_Ih", "mA/cm2",
   0,0
  };
   static double delta_t = 1;
   static double r0 = 0;
   static double v = 0;
   /* connect global user variables to hoc */
   static DoubScal hoc_scdoub[] = {
   "p_Ih", &p_Ih,
   "rinf_Ih", &rinf_Ih,
   "rexp_Ih", &rexp_Ih,
   "tau_r_Ih", &tau_r_Ih,
   "usetable_Ih", &usetable_Ih,
   0,0
  };
   static DoubVec hoc_vdoub[] = {
   0,0,0
  };
   static double _sav_indep;
   static void nrn_alloc(Prop*);
  static void  nrn_init(_NrnThread*, _Memb_list*, int);
  static void nrn_state(_NrnThread*, _Memb_list*, int);
   static void nrn_cur(_NrnThread*, _Memb_list*, int);
  static void  nrn_jacob(_NrnThread*, _Memb_list*, int);
   
  static int _ode_count(int);
  static void _ode_map(int, double**, double**, double*, Datum*, double*, int);
  static void _ode_spec(_NrnThread*, _Memb_list*, int);
  static void _ode_matsol(_NrnThread*, _Memb_list*, int);
   
  #define _cvode_ieq _ppvar[3]._i
   /* connect range variables in _p that hoc is supposed to know about */
   static const char *_mechanism[] = {
   "6.2.0",
  "Ih",
   "gkhbar_Ih",
   0,
   "ih_Ih",
   0,
   "r_Ih",
   0,
   0};
   static Symbol* _h_sym;
   
  extern Prop* need_memb(Symbol*);
  
  static void nrn_alloc(Prop* _prop) {
  	Prop *prop_ion;
  	double *_p; Datum *_ppvar;
   	_p = nrn_prop_data_alloc(_mechtype, 6, _prop);
   	/*initialize range parameters*/
   	gkhbar = 0;
   	_prop->param = _p;
   	_prop->param_size = 6;
   	_ppvar = nrn_prop_datum_alloc(_mechtype, 4, _prop);
   	_prop->dparam = _ppvar;
   	/*connect ionic variables to this model*/
   prop_ion = need_memb(_h_sym);
   nrn_promote(prop_ion, 0, 1);
   	_ppvar[0]._pval = &prop_ion->param[0]; /* eh */
   	_ppvar[1]._pval = &prop_ion->param[3]; /* ih */
   	_ppvar[2]._pval = &prop_ion->param[4]; /* _ion_dihdv */
   
  }
   static void _initlists();
    /* some states have an absolute tolerance */
   static Symbol** _atollist;
   static HocStateTolerance _hoc_state_tol[] = {
   0,0
  };
   static void _update_ion_pointer(Datum*);
   extern Symbol* hoc_lookup(const char*);
  extern void _nrn_thread_reg(int, int, void(*f)(Datum*));
  extern void _nrn_thread_table_reg(int, void(*)(double*, Datum*, Datum*, _NrnThread*, int));
  extern void hoc_register_tolerance(int, HocStateTolerance*, Symbol***);
  extern void _cvode_abstol( Symbol**, double*, int);
  
   void _Ih_reg() {
  	int _vectorized = 0;
    _initlists();
   	ion_reg("h", 1.0);
   	_h_sym = hoc_lookup("h_ion");
   	register_mech(_mechanism, nrn_alloc,nrn_cur, nrn_jacob, nrn_state, nrn_init, hoc_nrnpointerindex, 0);
   _mechtype = nrn_get_mechtype(_mechanism[1]);
       _nrn_setdata_reg(_mechtype, _setdata);
       _nrn_thread_reg(_mechtype, 2, _update_ion_pointer);
    hoc_register_prop_size(_mechtype, 6, 4);
   	hoc_register_cvode(_mechtype, _ode_count, _ode_map, _ode_spec, _ode_matsol);
   	hoc_register_tolerance(_mechtype, _hoc_state_tol, &_atollist);
   	hoc_register_var(hoc_scdoub, hoc_vdoub, hoc_intfunc);
   	ivoc_help("help ?1 Ih e:/Dropbox/Research/Thesis/MODELS/Short2016/Ih.mod\n");
   hoc_register_limits(_mechtype, _hoc_parm_limits);
   hoc_register_units(_mechtype, _hoc_parm_units);
   }
   static double *_t_rinf;
   static double *_t_rexp;
   static double *_t_tau_r;
  static int _reset;
  static char *modelname = "Hyperpolarization-activated cation current";
  
  static int error;
  static int _ninits = 0;
  static int _match_recurse=1;
  static void _modl_cleanup(){ _match_recurse=1;}
  static int _f_rates(double);
  static int rates(double);
   static int _deriv1_advance = 0;
   
  static int _ode_spec1(_threadargsproto_);
  /*static int _ode_matsol1(_threadargsproto_);*/
   static void _n_rates(double);
   static int _slist2[1]; static double _dlist2[1];
   static double _savstate1[1], *_temp1 = _savstate1;
   static int _slist1[1], _dlist1[1];
   static int deriv(_threadargsproto_);
   
  /*CVODE*/
   static int _ode_spec1 () {_reset=0;
   {
     rates ( _threadargscomma_ v ) ;
     Dr = ( rinf - r ) / tau_r ;
     }
   return _reset;
  }
   static int _ode_matsol1 () {
   rates ( _threadargscomma_ v ) ;
   Dr = Dr  / (1. - dt*( ( ( ( - 1.0 ) ) ) / tau_r )) ;
   return 0;
  }
   /*END CVODE*/
   
  static int deriv () {_reset=0;
   { static int _recurse = 0;
   int _counte = -1;
   if (!_recurse) {
   _recurse = 1;
   {int _id; for(_id=0; _id < 1; _id++) { _savstate1[_id] = _p[_slist1[_id]];}}
   error = newton(1,_slist2, _p, deriv, _dlist2);
   _recurse = 0; if(error) {abort_run(error);}}
   {
     rates ( _threadargscomma_ v ) ;
     Dr = ( rinf - r ) / tau_r ;
     {int _id; for(_id=0; _id < 1; _id++) {
  if (_deriv1_advance) {
   _dlist2[++_counte] = _p[_dlist1[_id]] - (_p[_slist1[_id]] - _savstate1[_id])/dt;
   }else{
  _dlist2[++_counte] = _p[_slist1[_id]] - _savstate1[_id];}}}
   } }
   return _reset;}
   static double _mfac_rates, _tmin_rates;
   static void _check_rates();
   static void _check_rates() {
    static int _maktable=1; int _i, _j, _ix = 0;
    double _xi, _tmax;
    static double _sav_dt;
    static double _sav_p;
    if (!usetable) {return;}
    if (_sav_dt != dt) { _maktable = 1;}
    if (_sav_p != p) { _maktable = 1;}
    if (_maktable) { double _x, _dx; _maktable=0;
     _tmin_rates =  - 200.0 ;
     _tmax =  100.0 ;
     _dx = (_tmax - _tmin_rates)/300.; _mfac_rates = 1./_dx;
     for (_i=0, _x=_tmin_rates; _i < 301; _x += _dx, _i++) {
      _f_rates(_x);
      _t_rinf[_i] = rinf;
      _t_rexp[_i] = rexp;
      _t_tau_r[_i] = tau_r;
     }
     _sav_dt = dt;
     _sav_p = p;
    }
   }
  
   static int rates(double _lv){ _check_rates();
   _n_rates(_lv);
   return 0;
   }
  
   static void _n_rates(double _lv){ int _i, _j;
   double _xi, _theta;
   if (!usetable) {
   _f_rates(_lv); return; 
  }
   _xi = _mfac_rates * (_lv - _tmin_rates);
   if (isnan(_xi)) {
    rinf = _xi;
    rexp = _xi;
    tau_r = _xi;
    return;
   }
   if (_xi <= 0.) {
   rinf = _t_rinf[0];
   rexp = _t_rexp[0];
   tau_r = _t_tau_r[0];
   return; }
   if (_xi >= 300.) {
   rinf = _t_rinf[300];
   rexp = _t_rexp[300];
   tau_r = _t_tau_r[300];
   return; }
   _i = (int) _xi;
   _theta = _xi - (double)_i;
   rinf = _t_rinf[_i] + _theta*(_t_rinf[_i+1] - _t_rinf[_i]);
   rexp = _t_rexp[_i] + _theta*(_t_rexp[_i+1] - _t_rexp[_i]);
   tau_r = _t_tau_r[_i] + _theta*(_t_tau_r[_i+1] - _t_tau_r[_i]);
   }
  
   
  static int  _f_rates (  double _lv ) {
     rinf = 1.0 / ( 1.0 + exp ( ( _lv + 84.1 ) / 10.2 ) ) ;
     rexp = 1.0 - exp ( - dt / ( tau_r ) ) ;
     tau_r = 100.0 + 1.0 / ( exp ( - 17.9 - 0.116 * _lv ) + exp ( - 1.84 + 0.09 * _lv ) ) ;
      return 0; }
   
  static void _hoc_rates(void) {
    double _r;
      _r = 1.;
   rates (  *getarg(1) );
   hoc_retpushx(_r);
  }
   
  static int _ode_count(int _type){ return 1;}
   
  static void _ode_spec(_NrnThread* _nt, _Memb_list* _ml, int _type) {
     Datum* _thread;
     Node* _nd; double _v; int _iml, _cntml;
    _cntml = _ml->_nodecount;
    _thread = _ml->_thread;
    for (_iml = 0; _iml < _cntml; ++_iml) {
      _p = _ml->_data[_iml]; _ppvar = _ml->_pdata[_iml];
      _nd = _ml->_nodelist[_iml];
      v = NODEV(_nd);
    eh = _ion_eh;
       _ode_spec1 ();
    }}
   
  static void _ode_map(int _ieq, double** _pv, double** _pvdot, double* _pp, Datum* _ppd, double* _atol, int _type) { 
   	int _i; _p = _pp; _ppvar = _ppd;
  	_cvode_ieq = _ieq;
  	for (_i=0; _i < 1; ++_i) {
  		_pv[_i] = _pp + _slist1[_i];  _pvdot[_i] = _pp + _dlist1[_i];
  		_cvode_abstol(_atollist, _atol, _i);
  	}
   }
   
  static void _ode_matsol(_NrnThread* _nt, _Memb_list* _ml, int _type) {
     Datum* _thread;
     Node* _nd; double _v; int _iml, _cntml;
    _cntml = _ml->_nodecount;
    _thread = _ml->_thread;
    for (_iml = 0; _iml < _cntml; ++_iml) {
      _p = _ml->_data[_iml]; _ppvar = _ml->_pdata[_iml];
      _nd = _ml->_nodelist[_iml];
      v = NODEV(_nd);
    eh = _ion_eh;
   _ode_matsol1 ();
   }}
   extern void nrn_update_ion_pointer(Symbol*, Datum*, int, int);
   static void _update_ion_pointer(Datum* _ppvar) {
     nrn_update_ion_pointer(_h_sym, _ppvar, 0, 0);
     nrn_update_ion_pointer(_h_sym, _ppvar, 1, 3);
     nrn_update_ion_pointer(_h_sym, _ppvar, 2, 4);
   }
  
  static void initmodel() {
    int _i; double _save;_ninits++;
   _save = t;
   t = 0.0;
  {
    r = r0;
   {
     rates ( _threadargscomma_ v ) ;
     r = rinf ;
     }
    _sav_indep = t; t = _save;
  
  }
  }
  
  static void nrn_init(_NrnThread* _nt, _Memb_list* _ml, int _type){
  Node *_nd; double _v; int* _ni; int _iml, _cntml;
  #if CACHEVEC
      _ni = _ml->_nodeindices;
  #endif
  _cntml = _ml->_nodecount;
  for (_iml = 0; _iml < _cntml; ++_iml) {
   _p = _ml->_data[_iml]; _ppvar = _ml->_pdata[_iml];
  #if CACHEVEC
    if (use_cachevec) {
      _v = VEC_V(_ni[_iml]);
    }else
  #endif
    {
      _nd = _ml->_nodelist[_iml];
      _v = NODEV(_nd);
    }
   v = _v;
    eh = _ion_eh;
   initmodel();
   }}
  
  static double _nrn_current(double _v){double _current=0.;v=_v;{ {
     ih = gkhbar * r * ( v - eh ) ;
     }
   _current += ih;
  
  } return _current;
  }
  
  static void nrn_cur(_NrnThread* _nt, _Memb_list* _ml, int _type){
  Node *_nd; int* _ni; double _rhs, _v; int _iml, _cntml;
  #if CACHEVEC
      _ni = _ml->_nodeindices;
  #endif
  _cntml = _ml->_nodecount;
  for (_iml = 0; _iml < _cntml; ++_iml) {
   _p = _ml->_data[_iml]; _ppvar = _ml->_pdata[_iml];
  #if CACHEVEC
    if (use_cachevec) {
      _v = VEC_V(_ni[_iml]);
    }else
  #endif
    {
      _nd = _ml->_nodelist[_iml];
      _v = NODEV(_nd);
    }
    eh = _ion_eh;
   _g = _nrn_current(_v + .001);
   	{ double _dih;
    _dih = ih;
   _rhs = _nrn_current(_v);
    _ion_dihdv += (_dih - ih)/.001 ;
   	}
   _g = (_g - _rhs)/.001;
    _ion_ih += ih ;
  #if CACHEVEC
    if (use_cachevec) {
  	VEC_RHS(_ni[_iml]) -= _rhs;
    }else
  #endif
    {
  	NODERHS(_nd) -= _rhs;
    }
   
  }}
  
  static void nrn_jacob(_NrnThread* _nt, _Memb_list* _ml, int _type){
  Node *_nd; int* _ni; int _iml, _cntml;
  #if CACHEVEC
      _ni = _ml->_nodeindices;
  #endif
  _cntml = _ml->_nodecount;
  for (_iml = 0; _iml < _cntml; ++_iml) {
   _p = _ml->_data[_iml];
  #if CACHEVEC
    if (use_cachevec) {
  	VEC_D(_ni[_iml]) += _g;
    }else
  #endif
    {
       _nd = _ml->_nodelist[_iml];
  	NODED(_nd) += _g;
    }
   
  }}
  
  static void nrn_state(_NrnThread* _nt, _Memb_list* _ml, int _type){
   double _break, _save;
  Node *_nd; double _v; int* _ni; int _iml, _cntml;
  #if CACHEVEC
      _ni = _ml->_nodeindices;
  #endif
  _cntml = _ml->_nodecount;
  for (_iml = 0; _iml < _cntml; ++_iml) {
   _p = _ml->_data[_iml]; _ppvar = _ml->_pdata[_iml];
   _nd = _ml->_nodelist[_iml];
  #if CACHEVEC
    if (use_cachevec) {
      _v = VEC_V(_ni[_iml]);
    }else
  #endif
    {
      _nd = _ml->_nodelist[_iml];
      _v = NODEV(_nd);
    }
   _break = t + .5*dt; _save = t;
   v=_v;
  {
    eh = _ion_eh;
   { {
   for (; t < _break; t += dt) {
   error = _deriv1_advance = 1;
   derivimplicit(_ninits, 1, _slist1, _dlist1, _p, &t, dt, deriv, &_temp1);
  _deriv1_advance = 0;
   if(error){fprintf(stderr,"at line 38 in file Ih.mod:\n        SOLVE deriv METHOD derivimplicit\n"); nrn_complain(_p); abort_run(error);}
   
  }}
   t = _save;
   } }}
  
  }
  
  static void terminal(){}
  
  static void _initlists() {
   int _i; static int _first = 1;
    if (!_first) return;
   _slist1[0] = &(r) - _p;  _dlist1[0] = &(Dr) - _p;
   _slist2[0] = &(r) - _p;
     _t_rinf = makevector(301*sizeof(double));
     _t_rexp = makevector(301*sizeof(double));
     _t_tau_r = makevector(301*sizeof(double));
  _first = 0;
  }
  