/*
    Data area of Crank-Nicolson integrator.
    Comments with '$' as the first letter
    describe appearence of parameters
    on the screen.
*/

/*$t Integrator*/
typedef struct {
  /* The following three fields MUST always be present regardless of method */
  void * X0;		/* First point supplied by a starter */
			/*$ -1 | - n | "0" */
  char * ActiveUserTest;/* Activeness of user test functions supplied by starter */
			/*$ -1 | - n | "0" */

  /*$t Integration data*/
  double Tint;		/* Integration interval */
  			/*$=_slv 1 | - n Interval | "10.0" */
  			/*$ 1 | + n Interval | "10.0" */
  double h0;		/* Initial step */
			/*$ 1 | + n InitStepsize | "0.01" */
  double eps;           /* Tolerance */
                        /*$ 1 | + n Tolerance | "0.00001" */
  double dx;            /* Increment */
                        /*$ 1 | + n Increment | "0.0001" */
  double maxiter;       /* Maximal number of Newton iterations */
                        /*$ 1 | + n MaxNewtonIter | "7" */
  void * X1;		/*$ -1 | - n | "0" */ 
  double hmin;		/* Min step */
			/*$ 1 | + n MinStepsize | "1.0e-5" */
  double hmax;		/* Max step */
			/*$ 1 | + n MaxStepsize | "1.0" */			  
  int nadapt;		/* number of points between adaptation  */
			/*$ 1 | + n BetweenAdaptation | "0" */                        
  /*$t User function zero */
  double epsuf;		/* test function tolerance  */
			/*$ 1 | + n UserFuncTolerance(%UserFunc-1) | "0.001" */
  int IterTestFuns;     /* max number of iterations for user test functions */
		        /*$ 1 | + n MaxIterFunc(%UserFunc-1) | "20" */
} IntegrData, * IntegrDataPtr;