/* Created by Language version: 6.0.2 */
/* NOT VECTORIZED */
#include <stdio.h>
#include <math.h>
#include "scoplib.h"
#undef PI
 
#include "md1redef.h"
#include "section.h"
#include "nrnoc_ml.h"
#include "md2redef.h"

#if METHOD3
extern int _method3;
#endif

#undef exp
#define exp hoc_Exp
extern double hoc_Exp();
 	/*SUPPRESS 761*/
	/*SUPPRESS 762*/
	/*SUPPRESS 763*/
	/*SUPPRESS 765*/
	 extern double *getarg();
 static double *_p; static Datum *_ppvar;
 
#define delta_t dt
#define gkabar _p[0]
#define ik _p[1]
#define n _p[2]
#define l _p[3]
#define ek _p[4]
#define Dn _p[5]
#define Dl _p[6]
#define _g _p[7]
#define _ion_ek	*_ppvar[0].pval
#define _ion_ik	*_ppvar[1].pval
#define _ion_dikdv	*_ppvar[2].pval
 
#if MAC
#if !defined(v)
#define v _mlhv
#endif
#if !defined(h)
#define h _mlhh
#endif
#endif
 static int hoc_nrnpointerindex =  -1;
 /* external NEURON variables */
 extern double celsius;
 extern double dt;
 extern double t;
 /* declaration of user functions */
 static int _hoc_alpl();
 static int _hoc_alpn();
 static int _hoc_betl();
 static int _hoc_betn();
 static int _hoc_rates();
 static int _mechtype;
extern int nrn_get_mechtype();
 static _hoc_setdata() {
 Prop *_prop, *hoc_getdata_range();
 _prop = hoc_getdata_range("kap");
 _p = _prop->param; _ppvar = _prop->dparam;
 ret(1.);
}
 /* connect user functions to hoc names */
 static IntFunc hoc_intfunc[] = {
 "setdata_kap", _hoc_setdata,
 "alpl_kap", _hoc_alpl,
 "alpn_kap", _hoc_alpn,
 "betl_kap", _hoc_betl,
 "betn_kap", _hoc_betn,
 "rates_kap", _hoc_rates,
 0, 0
};
#define alpl alpl_kap
#define alpn alpn_kap
#define betl betl_kap
#define betn betn_kap
 extern double alpl();
 extern double alpn();
 extern double betl();
 extern double betn();
 /* declare global and static user variables */
#define a0n a0n_kap
 double a0n = 0.05;
#define gml gml_kap
 double gml = 1;
#define gmn gmn_kap
 double gmn = 0.55;
#define lmin lmin_kap
 double lmin = 2;
#define linf linf_kap
 double linf = 0;
#define nmin nmin_kap
 double nmin = 0.1;
#define ninf ninf_kap
 double ninf = 0;
#define pw pw_kap
 double pw = -1;
#define q10 q10_kap
 double q10 = 5;
#define qq qq_kap
 double qq = 5;
#define tq tq_kap
 double tq = -40;
#define taun taun_kap
 double taun = 0;
#define taul taul_kap
 double taul = 0;
#define vhalfl vhalfl_kap
 double vhalfl = -56;
#define vhalfn vhalfn_kap
 double vhalfn = 11;
#define zetal zetal_kap
 double zetal = 3;
#define zetan zetan_kap
 double zetan = -1.5;
 /* some parameters have upper and lower limits */
 static HocParmLimits _hoc_parm_limits[] = {
 0,0,0
};
 static HocParmUnits _hoc_parm_units[] = {
 "vhalfn_kap", "mV",
 "vhalfl_kap", "mV",
 "a0n_kap", "/ms",
 "zetan_kap", "1",
 "zetal_kap", "1",
 "gmn_kap", "1",
 "gml_kap", "1",
 "lmin_kap", "ms",
 "nmin_kap", "ms",
 "pw_kap", "1",
 "tq_kap", "mV",
 "qq_kap", "mV",
 "taul_kap", "ms",
 "taun_kap", "ms",
 "gkabar_kap", "mho/cm2",
 "ik_kap", "mA/cm2",
 0,0
};
 static double l0 = 0;
 static double n0 = 0;
 static double v = 0;
 /* connect global user variables to hoc */
 static DoubScal hoc_scdoub[] = {
 "vhalfn_kap", &vhalfn,
 "vhalfl_kap", &vhalfl,
 "a0n_kap", &a0n,
 "zetan_kap", &zetan,
 "zetal_kap", &zetal,
 "gmn_kap", &gmn,
 "gml_kap", &gml,
 "lmin_kap", &lmin,
 "nmin_kap", &nmin,
 "pw_kap", &pw,
 "tq_kap", &tq,
 "qq_kap", &qq,
 "q10_kap", &q10,
 "ninf_kap", &ninf,
 "linf_kap", &linf,
 "taul_kap", &taul,
 "taun_kap", &taun,
 0,0
};
 static DoubVec hoc_vdoub[] = {
 0,0,0
};
 static double _sav_indep;
 static nrn_alloc(), nrn_init(), nrn_state();
 static nrn_cur(), nrn_jacob();
 
static int _ode_count(), _ode_map(), _ode_spec(), _ode_matsol();
extern int nrn_cvode_;
 
#define _cvode_ieq _ppvar[3]._i
 /* connect range variables in _p that hoc is supposed to know about */
 static char *_mechanism[] = {
 "6.0.2",
"kap",
 "gkabar_kap",
 0,
 "ik_kap",
 0,
 "n_kap",
 "l_kap",
 0,
 0};
 static Symbol* _k_sym;
 
static nrn_alloc(_prop)
	Prop *_prop;
{
	Prop *prop_ion, *need_memb();
	double *_p; Datum *_ppvar;
 	_p = nrn_prop_data_alloc(_mechtype, 8);
 	/*initialize range parameters*/
 	gkabar = 0;
 	_prop->param = _p;
 	_prop->param_size = 8;
 	_ppvar = nrn_prop_datum_alloc(_mechtype, 4);
 	_prop->dparam = _ppvar;
 	/*connect ionic variables to this model*/
 prop_ion = need_memb(_k_sym);
 nrn_promote(prop_ion, 0, 1);
 	_ppvar[0].pval = &prop_ion->param[0]; /* ek */
 	_ppvar[1].pval = &prop_ion->param[3]; /* ik */
 	_ppvar[2].pval = &prop_ion->param[4]; /* _ion_dikdv */
 
}
 static _initlists();
  /* some states have an absolute tolerance */
 static Symbol** _atollist;
 static HocStateTolerance _hoc_state_tol[] = {
 0,0
};
 _kaprox_reg() {
	int _vectorized = 0;
  _initlists();
 	ion_reg("k", -10000.);
 	_k_sym = hoc_lookup("k_ion");
 	register_mech(_mechanism, nrn_alloc,nrn_cur, nrn_jacob, nrn_state, nrn_init, hoc_nrnpointerindex, _vectorized);
 _mechtype = nrn_get_mechtype(_mechanism[1]);
  hoc_register_dparam_size(_mechtype, 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 kap /home/jg/ModelosNeuron/ProgramsNeuronCA1_JG/CleanVersion_CA1_JG_15Mar09/mechanism/x86_64/kaprox.mod\n");
 hoc_register_limits(_mechtype, _hoc_parm_limits);
 hoc_register_units(_mechtype, _hoc_parm_units);
 }
 static double _lqt ;
static int _reset;
static char *modelname = "K-A channel from Klee Ficker and Heinemann";

static int error;
static int _ninits = 0;
static int _match_recurse=1;
static _modl_cleanup(){ _match_recurse=1;}
static rates();
 
static int _ode_spec1(), _ode_matsol1();
 static int _slist1[2], _dlist1[2];
 static int states();
 
/*CVODE*/
 static int _ode_spec1 () {_reset=0;
 {
   rates (  v ) ;
   Dn = ( ninf - n ) / taun ;
   Dl = ( linf - l ) / taul ;
   }
 return _reset;
}
 static int _ode_matsol1() {
 rates (  v ) ;
 Dn = Dn  / (1. - dt*( ( ( ( - 1.0 ) ) ) / taun )) ;
 Dl = Dl  / (1. - dt*( ( ( ( - 1.0 ) ) ) / taul )) ;
}
 /*END CVODE*/
 static int states () {_reset=0;
 {
   rates (  v ) ;
    n = n + (1. - exp(dt*(( ( ( - 1.0 ) ) ) / taun)))*(- ( ( ( ninf ) ) / taun ) / ( ( ( ( - 1.0) ) ) / taun ) - n) ;
    l = l + (1. - exp(dt*(( ( ( - 1.0 ) ) ) / taul)))*(- ( ( ( linf ) ) / taul ) / ( ( ( ( - 1.0) ) ) / taul ) - l) ;
   }
  return 0;
}
 
static int  rates (  _lv )  
	double _lv ;
 {
   double _la ;
 _la = alpn (  _lv ) ;
   ninf = 1.0 / ( 1.0 + _la ) ;
   taun = betn (  _lv ) / ( _lqt * a0n * ( 1.0 + _la ) ) ;
   if ( taun < nmin ) {
     taun = nmin ;
     }
   _la = alpl (  _lv ) ;
   linf = 1.0 / ( 1.0 + _la ) ;
   taul = 0.26 * ( _lv + 50.0 ) ;
   if ( taul < lmin ) {
     taul = lmin ;
     }
    return 0; }
 static int _hoc_rates() {
 double _r;
 _r = 1.;
 rates (  *getarg(1) ) ;
 ret(_r);
}
 
double alpn (  _lv )  
	double _lv ;
 {
   double _lalpn;
 double _lzeta ;
 _lzeta = zetan + pw / ( 1.0 + exp ( ( _lv - tq ) / qq ) ) ;
    _lalpn = exp ( 1.e-3 * _lzeta * ( _lv - vhalfn ) * 9.648e4 / ( 8.315 * ( 273.16 + celsius ) ) ) ;
    
return _lalpn;
 }
 static int _hoc_alpn() {
 double _r;
 _r =  alpn (  *getarg(1) ) ;
 ret(_r);
}
 
double betn (  _lv )  
	double _lv ;
 {
   double _lbetn;
 double _lzeta ;
 _lzeta = zetan + pw / ( 1.0 + exp ( ( _lv - tq ) / qq ) ) ;
    _lbetn = exp ( 1.e-3 * _lzeta * gmn * ( _lv - vhalfn ) * 9.648e4 / ( 8.315 * ( 273.16 + celsius ) ) ) ;
    
return _lbetn;
 }
 static int _hoc_betn() {
 double _r;
 _r =  betn (  *getarg(1) ) ;
 ret(_r);
}
 
double alpl (  _lv )  
	double _lv ;
 {
   double _lalpl;
  _lalpl = exp ( 1.e-3 * zetal * ( _lv - vhalfl ) * 9.648e4 / ( 8.315 * ( 273.16 + celsius ) ) ) ;
    
return _lalpl;
 }
 static int _hoc_alpl() {
 double _r;
 _r =  alpl (  *getarg(1) ) ;
 ret(_r);
}
 
double betl (  _lv )  
	double _lv ;
 {
   double _lbetl;
  _lbetl = exp ( 1.e-3 * zetal * gml * ( _lv - vhalfl ) * 9.648e4 / ( 8.315 * ( 273.16 + celsius ) ) ) ;
    
return _lbetl;
 }
 static int _hoc_betl() {
 double _r;
 _r =  betl (  *getarg(1) ) ;
 ret(_r);
}
 
static int _ode_count(_type) int _type;{ return 2;}
 
static int _ode_spec(_nd, _pp, _ppd) Node* _nd; double* _pp; Datum* _ppd; {
	_p = _pp; _ppvar = _ppd; v = NODEV(_nd);
  ek = _ion_ek;
  _ode_spec1();
  }
 
static int _ode_map(_ieq, _pv, _pvdot, _pp, _ppd, _atol, _type) int _ieq, _type; double** _pv, **_pvdot, *_pp, *_atol; Datum* _ppd; {
	int _i; _p = _pp; _ppvar = _ppd;
	_cvode_ieq = _ieq;
	for (_i=0; _i < 2; ++_i) {
		_pv[_i] = _pp + _slist1[_i];  _pvdot[_i] = _pp + _dlist1[_i];
		_cvode_abstol(_atollist, _atol, _i);
	}
 }
 
static int _ode_matsol(_nd, _pp, _ppd) Node* _nd; double* _pp; Datum* _ppd; {
	_p = _pp; _ppvar = _ppd; v = NODEV(_nd);
  ek = _ion_ek;
 _ode_matsol1();
 }

static initmodel() {
  int _i; double _save;_ninits++;
 _save = t;
 t = 0.0;
{
  l = l0;
  n = n0;
 {
   _lqt = pow( q10 , ( ( celsius - 24.0 ) / 10.0 ) ) ;
   rates (  v ) ;
   n = ninf ;
   l = linf ;
   }
  _sav_indep = t; t = _save;

}
}

static nrn_init(_ml, _type) _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;
  ek = _ion_ek;
 initmodel();
 }}

static double _nrn_current(_v) double _v;{double _current=0.;v=_v;{ {
   ik = gkabar * n * l * ( v - ek ) ;
   }
 _current += ik;

} return _current;
}

static nrn_cur(_ml, _type) _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);
  }
  ek = _ion_ek;
 _g = _nrn_current(_v + .001);
 	{ static double _dik;
  _dik = ik;
 _rhs = _nrn_current(_v);
  _ion_dikdv += (_dik - ik)/.001 ;
 	}
 _g = (_g - _rhs)/.001;
  _ion_ik += ik ;
#if CACHEVEC
  if (use_cachevec) {
	VEC_RHS(_ni[_iml]) -= _rhs;
  }else
#endif
  {
	NODERHS(_nd) -= _rhs;
  }
 
}}

static nrn_jacob(_ml, _type) _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 nrn_state(_ml, _type) _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; delta_t = dt;
 v=_v;
{
  ek = _ion_ek;
 { {
 for (; t < _break; t += delta_t) {
 error =  states();
 if(error){fprintf(stderr,"at line 69 in file kaprox.mod:\n:	ik = gkabar*n*l*(v+70)\n"); nrn_complain(_p); abort_run(error);}
 
}}
 t = _save;
 } }}

}

static terminal(){}

static _initlists() {
 int _i; static int _first = 1;
  if (!_first) return;
 _slist1[0] = &(n) - _p;  _dlist1[0] = &(Dn) - _p;
 _slist1[1] = &(l) - _p;  _dlist1[1] = &(Dl) - _p;
_first = 0;
}