cswask.c

linux平台下类似著名的电路板作图软件 Spice的源代码

/**********
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 Current controlled SWitch
 */

#include "spice.h"
#include <stdio.h>
#include "cktdefs.h"
#include "devdefs.h"
#include "ifsim.h"
#include "cswdefs.h"
#include "sperror.h"
#include "util.h"
#include "suffix.h"


/* ARGSUSED */
int
CSWask(ckt,inst,which,value,select)
    CKTcircuit *ckt;
    GENinstance *inst;
    int which;
    IFvalue *value;
    IFvalue *select;
{
    CSWinstance *here = (CSWinstance*)inst;
    static char *msg = "Current and power not available in ac analysis";
    switch(which) {
        case CSW_CONTROL:
            value->uValue = here->CSWcontName;
            return (OK);
        case CSW_POS_NODE:
            value->iValue = here->CSWposNode;
            return (OK);
        case CSW_NEG_NODE:
            value->iValue = here->CSWnegNode;
            return (OK);
        case CSW_CURRENT:
            if (ckt->CKTcurrentAnalysis & DOING_AC) {
                errMsg = MALLOC(strlen(msg)+1);
                errRtn = "CSWask";
                strcpy(errMsg,msg);
                return(E_ASKCURRENT);
            } else {
                value->rValue = (*(ckt->CKTrhsOld+here->CSWposNode)
                        - *(ckt->CKTrhsOld + here->CSWnegNode)) *
                        here->CSWcond;
            }
            return(OK);
        case CSW_POWER:
            if (ckt->CKTcurrentAnalysis & DOING_AC) {
                errMsg = MALLOC(strlen(msg)+1);
                errRtn = "CSWask";
                strcpy(errMsg,msg);
                return(E_ASKPOWER);
            } else {
                value->rValue = (*(ckt->CKTrhsOld+here->CSWposNode)
                        - *(ckt->CKTrhsOld + here->CSWnegNode)) *
                        (*(ckt->CKTrhsOld + here->CSWposNode)
                        - *(ckt->CKTrhsOld + here->CSWnegNode)) *
                        here->CSWcond;
            }
            return(OK);
        default:
            return (E_BADPARM);
    }
    /* NOTREACHED */
}