/**********
Copyright 1990 Regents of the University of California.  All rights reserved.
Author: 1985 Thomas L. Quarles
**********/

#ifndef URC
#define URC


#include "ngspice/ifsim.h"
#include "ngspice/cktdefs.h"
#include "ngspice/gendefs.h"
#include "ngspice/complex.h"

    /*
     *  structures used to describe uniform RC lines
     */

/* information needed for each instance */

typedef struct sURCinstance {
    struct sURCmodel *URCmodPtr;    /* backpointer to model */
    struct sURCinstance *URCnextInstance;   /* pointer to next instance of 
                                             * current model*/
    IFuid URCname;  /* pointer to character string naming this instance */
    int URCstate;	/* not used */
    int URCposNode;   /* number of positive node of URC */
    int URCnegNode;   /* number of negative node of URC */
    int URCgndNode;   /* number of the "ground" node of the URC */

    double URClength;   /* length of line */
    int URClumps;   /* number of lumps in line */
    unsigned URClenGiven : 1;   /* flag to indicate length was specified */
    unsigned URClumpsGiven : 1; /* flag to indicate lumps was specified */
} URCinstance ;

/* per model data */

typedef struct sURCmodel {       /* model structure for a resistor */
    int URCmodType; /* type index of this device type */
    struct sURCmodel *URCnextModel; /* pointer to next possible model 
                                     * in linked list */
    URCinstance * URCinstances; /* pointer to list of instances that have this
                                 * model */
    IFuid URCmodName;       /* pointer to character string naming this model */

    /* --- end of generic struct GENmodel --- */

    double URCk;        /* propagation constant for URC */
    double URCfmax;     /* max frequence of interest */
    double URCrPerL;    /* resistance per unit length */
    double URCcPerL;    /* capacitance per unit length */
    double URCisPerL;   /* diode saturation current per unit length */
    double URCrsPerL;   /* diode resistance per unit length */
    unsigned URCkGiven : 1;     /* flag to indicate k was specified */
    unsigned URCfmaxGiven : 1;  /* flag to indicate fmax was specified */
    unsigned URCrPerLGiven : 1; /* flag to indicate rPerL was specified */
    unsigned URCcPerLGiven : 1; /* flag to indicate cPerL was specified */
    unsigned URCisPerLGiven : 1; /* flag to indicate isPerL was specified */
    unsigned URCrsPerLGiven : 1; /* flag to indicate rsPerL was specified */
} URCmodel;

/* device parameters */
#define URC_LEN 1
#define URC_LUMPS 2
#define URC_POS_NODE 3
#define URC_NEG_NODE 4
#define URC_GND_NODE 5

/* model parameters */
#define URC_MOD_K 101
#define URC_MOD_FMAX 102
#define URC_MOD_RPERL 103
#define URC_MOD_CPERL 104
#define URC_MOD_ISPERL 105
#define URC_MOD_RSPERL 106
#define URC_MOD_URC 107

/* device questions */

/* model questions */

#include "urcext.h"

#endif /*URC*/