/**********
Copyright 1990 Regents of the University of California.  All rights reserved.
Author: 1987 Thomas L. Quarles
**********/
/*
 */

/*
 * This routine gives access to the internal device parameters
 * of independent Voltage SouRCe
 */

#include "ngspice/ngspice.h"
#include "ngspice/cktdefs.h"
#include "ngspice/devdefs.h"
#include "ngspice/ifsim.h"
#include "vsrcdefs.h"
#include "ngspice/sperror.h"
#include "ngspice/suffix.h"


/* ARGSUSED */
int
VSRCask(CKTcircuit *ckt, GENinstance *inst, int which, IFvalue *value, IFvalue *select)
{
    VSRCinstance *here = (VSRCinstance*)inst;
    static char *msg = "Current and power not available in ac analysis";
    int temp;
    double *v, *w;

    NG_IGNORE(select);

    switch(which) {
        case VSRC_DC:
            value->rValue = here->VSRCdcValue;
            return (OK);
        case VSRC_AC_MAG:
            value->rValue = here->VSRCacMag;
            return (OK);
        case VSRC_AC_PHASE:
            value->rValue = here->VSRCacPhase;
            return (OK);
        case VSRC_PULSE:
        case VSRC_SINE:
        case VSRC_EXP:
        case VSRC_PWL:
        case VSRC_SFFM:
        case VSRC_AM:
        case VSRC_TRNOISE:
        case VSRC_TRRANDOM:
        case VSRC_FCN_COEFFS:
            temp = value->v.numValue = here->VSRCfunctionOrder;
            v = value->v.vec.rVec = TMALLOC(double, here->VSRCfunctionOrder);
            w = here->VSRCcoeffs;
            while (temp--)
                *v++ = *w++;
            return (OK);
        case VSRC_AC:
            value->v.numValue = 2;
            value->v.vec.rVec = TMALLOC(double, value->v.numValue);
            value->v.vec.rVec[0] = here->VSRCacMag;
            value->v.vec.rVec[1] = here->VSRCacPhase;
            return (OK);
        case VSRC_NEG_NODE:
            value->iValue = here->VSRCnegNode;
            return (OK);
        case VSRC_POS_NODE:
            value->iValue = here->VSRCposNode;
            return (OK);
        case VSRC_FCN_TYPE:
            value->iValue = here->VSRCfunctionType;
            return (OK);
        case VSRC_AC_REAL:
            value->rValue = here->VSRCacReal;
            return (OK);
        case VSRC_AC_IMAG:
            value->rValue = here->VSRCacImag;
            return (OK);
        case VSRC_R:
            value->rValue = here->VSRCr;
            return (OK);
        case VSRC_TD:
            value->rValue = here->VSRCrdelay;
            return (OK);
        case VSRC_FCN_ORDER:
            value->rValue = here->VSRCfunctionOrder;
            return (OK);
        case VSRC_CURRENT:
            if (ckt->CKTcurrentAnalysis & DOING_AC) {
                errMsg = TMALLOC(char, strlen(msg) + 1);
                errRtn = "VSRCask";
                strcpy(errMsg,msg);
                return(E_ASKCURRENT);
            } else {
                value->rValue = *(ckt->CKTrhsOld+here->VSRCbranch);
            }
            return(OK);
        case VSRC_POWER:
            if (ckt->CKTcurrentAnalysis & DOING_AC) {
                errMsg = TMALLOC(char, strlen(msg) + 1);
                errRtn = "VSRCask";
                strcpy(errMsg,msg);
                return(E_ASKPOWER);
            } else {
                value->rValue = (*(ckt->CKTrhsOld+here->VSRCposNode)
                        - *(ckt->CKTrhsOld + here->VSRCnegNode)) *
                        -*(ckt->CKTrhsOld + here->VSRCbranch);
            }
            return(OK);
#ifdef SHARED_MODULE
        case VSRC_EXTERNAL:
            /* Don't do anything */
            return (OK);
#endif
        default:
            return (E_BADPARM);
    }
    /* NOTREACHED */
}
