add missing noisesp.c
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Holger Vogt
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9882c3a24c
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/**********
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Copyright 1990 Regents of the University of California. All rights reserved.
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Author: 1987 Gary W. Ng
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Modified: 2001 AlansFixes
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**********/
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/* Patch to noisean.c by Richard D. McRoberts.
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* Patched with modifications from Weidong Liu (2000)
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* Patched with modifications ftom Weidong Liu
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* in bsim4.1.0 code
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*/
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#include "ngspice/ngspice.h"
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#include "ngspice/acdefs.h"
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#include "ngspice/cktdefs.h"
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#include "ngspice/iferrmsg.h"
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#include "ngspice/cpextern.h"
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#include "ngspice/noisedef.h"
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#include "ngspice/sperror.h"
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#include "ngspice/sim.h"
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#include "vsrc/vsrcdefs.h"
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#include "isrc/isrcdefs.h"
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// fixme
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// ugly hack to work around missing api to specify the "type" of signals
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extern int fixme_onoise_type;
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extern int fixme_inoise_type;
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#ifdef RFSPICE
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int
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NOISEsp (CKTcircuit *ckt, int restart)
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{
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/* variable must be static, for continuation of interrupted (Ctrl-C),
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longer lasting noise anlysis */
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static Ndata *data;
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double realVal;
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double imagVal;
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int error;
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int posOutNode;
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int negOutNode;
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int step;
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IFuid freqUid;
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double freqTol; /* tolerence parameter for finding final frequency; hack */
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int i, src_type;
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NOISEAN *job = (NOISEAN *) ckt->CKTcurJob;
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GENinstance *inst = CKTfndDev(ckt, job->input);
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bool frequequal = AlmostEqualUlps(job->NstartFreq, job->NstopFreq, 3);
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posOutNode = (job->output) -> number;
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negOutNode = (job->outputRef) -> number;
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if (job->NnumSteps < 1) {
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SPfrontEnd->IFerrorf(ERR_WARNING,
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"Number of steps for noise measurement has to be larger than 0,\n but currently is %d\n",
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job->NnumSteps);
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return(E_PARMVAL);
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} else if ((job->NnumSteps == 1) && (job->NstpType == LINEAR)) {
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if (!frequequal) {
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job->NstopFreq = job->NstartFreq;
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SPfrontEnd->IFerrorf(ERR_WARNING,
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"Noise measurement at a single frequency %g only!\n",
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job->NstartFreq);
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}
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} else {
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if (frequequal) {
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job->NstopFreq = job->NstartFreq;
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job->NnumSteps = 1;
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SPfrontEnd->IFerrorf(ERR_WARNING,
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"Noise measurement at a single frequency %g only!\n",
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job->NstartFreq);
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}
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}
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/* see if the source specified is AC */
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{
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bool ac_given = FALSE;
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if (!inst || inst->GENmodPtr->GENmodType < 0) {
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SPfrontEnd->IFerrorf (ERR_WARNING,
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"Noise input source %s not in circuit",
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job->input);
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return E_NOTFOUND;
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}
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if (inst->GENmodPtr->GENmodType == CKTtypelook("Vsource")) {
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ac_given = ((VSRCinstance *)inst) -> VSRCacGiven;
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src_type = SV_VOLTAGE;
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} else if(inst->GENmodPtr->GENmodType == CKTtypelook("Isource")) {
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ac_given = ((ISRCinstance *)inst) -> ISRCacGiven;
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src_type = SV_CURRENT;
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} else {
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SPfrontEnd->IFerrorf (ERR_WARNING,
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"Noise input source %s is not of proper type",
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job->input);
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return E_NOTFOUND;
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}
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if (!ac_given) {
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SPfrontEnd->IFerrorf (ERR_WARNING,
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"Noise input source %s has no AC value",
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job->input);
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return E_NOACINPUT;
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}
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}
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if ( (job->NsavFstp == 0.0) || restart) { /* va, NsavFstp is double */
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switch (job->NstpType) {
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case DECADE:
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job->NfreqDelta = exp(log(10.0)/
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job->NnumSteps);
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break;
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case OCTAVE:
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job->NfreqDelta = exp(log(2.0)/
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job->NnumSteps);
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break;
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case LINEAR:
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if (job->NnumSteps == 1)
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job->NfreqDelta = 0;
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else
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job->NfreqDelta = (job->NstopFreq -
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job->NstartFreq) / (job->NnumSteps - 1);
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break;
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default:
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return(E_BADPARM);
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}
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/* error = DCop(ckt); */
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error = CKTop(ckt, (ckt->CKTmode & MODEUIC) | MODEDCOP | MODEINITJCT,
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(ckt->CKTmode & MODEUIC) | MODEDCOP | MODEINITFLOAT,
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ckt->CKTdcMaxIter);
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if (error) return(error);
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/* Patch to noisean.c by Richard D. McRoberts. */
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ckt->CKTmode = (ckt->CKTmode & MODEUIC) | MODEDCOP | MODEINITSMSIG;
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error = CKTload(ckt);
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if(error) return(error);
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data = TMALLOC(Ndata, 1);
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step = 0;
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data->freq = job->NstartFreq;
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data->outNoiz = 0.0;
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data->inNoise = 0.0;
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data->squared = cp_getvar("sqrnoise", CP_BOOL, NULL, 0) ? 1 : 0;
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/* the current front-end needs the namelist to be fully
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declared before an OUTpBeginplot */
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SPfrontEnd->IFnewUid (ckt, &freqUid, NULL, "frequency", UID_OTHER, NULL);
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data->numPlots = 0; /* we don't have any plots yet */
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error = CKTnoise(ckt,N_DENS,N_OPEN,data);
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if (error) return(error);
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/*
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* all names in the namelist have been declared. now start the
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* plot
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*/
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if (src_type == SV_VOLTAGE)
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fixme_inoise_type =
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data->squared ? SV_SQR_VOLTAGE_DENSITY : SV_VOLTAGE_DENSITY;
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else
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fixme_inoise_type =
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data->squared ? SV_SQR_CURRENT_DENSITY : SV_CURRENT_DENSITY;
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fixme_onoise_type =
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data->squared ? SV_SQR_VOLTAGE_DENSITY : SV_VOLTAGE_DENSITY;
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if (!data->squared)
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for (i = 0; i < data->numPlots; i++)
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data->squared_value[i] =
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ciprefix("inoise", data->namelist[i]) ||
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ciprefix("onoise", data->namelist[i]);
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error = SPfrontEnd->OUTpBeginPlot (ckt, ckt->CKTcurJob,
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data->squared
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? "Noise Spectral Density Curves - (V^2 or A^2)/Hz"
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: "Noise Spectral Density Curves",
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freqUid, IF_REAL,
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data->numPlots, data->namelist, IF_REAL,
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&(data->NplotPtr));
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if (error) return(error);
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if (job->NstpType != LINEAR) {
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SPfrontEnd->OUTattributes (data->NplotPtr, NULL, OUT_SCALE_LOG, NULL);
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}
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} else { /* we must have paused before. pick up where we left off */
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step = (int)(job->NsavFstp);
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switch (job->NstpType) {
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case DECADE:
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case OCTAVE:
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data->freq = job->NstartFreq * exp (step *
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log (job->NfreqDelta));
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break;
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case LINEAR:
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data->freq = job->NstartFreq + step *
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job->NfreqDelta;
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break;
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default:
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return(E_BADPARM);
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}
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job->NsavFstp = 0;
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data->outNoiz = job->NsavOnoise;
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data->inNoise = job->NsavInoise;
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/* saj resume rawfile fix*/
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error = SPfrontEnd->OUTpBeginPlot (NULL, NULL,
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NULL,
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NULL, 0,
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666, NULL, 666,
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&(data->NplotPtr));
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/*saj*/
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}
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switch (job->NstpType) {
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case DECADE:
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case OCTAVE:
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freqTol = job->NfreqDelta * job->NstopFreq * ckt->CKTreltol;
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break;
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case LINEAR:
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freqTol = job->NfreqDelta * ckt->CKTreltol;
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break;
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default:
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return(E_BADPARM);
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}
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data->lstFreq = data->freq;
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/* do the noise analysis over all frequencies */
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while (data->freq <= job->NstopFreq + freqTol) {
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if(SPfrontEnd->IFpauseTest()) {
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job->NsavFstp = step; /* save our results */
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job->NsavOnoise = data->outNoiz; /* up until now */
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job->NsavInoise = data->inNoise;
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return (E_PAUSE);
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}
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ckt->CKTomega = 2.0 * M_PI * data->freq;
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ckt->CKTmode = (ckt->CKTmode & MODEUIC) | MODEAC | MODEACNOISE;
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ckt->noise_input = inst;
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/*
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* solve the original AC system to get the transfer
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* function between the input and output
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*/
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NIacIter(ckt);
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realVal = ckt->CKTrhsOld [posOutNode]
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- ckt->CKTrhsOld [negOutNode];
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imagVal = ckt->CKTirhsOld [posOutNode]
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- ckt->CKTirhsOld [negOutNode];
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data->GainSqInv = 1.0 / MAX(((realVal*realVal)
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+ (imagVal*imagVal)),N_MINGAIN);
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data->lnGainInv = log(data->GainSqInv);
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/* set up a block of "common" data so we don't have to
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* recalculate it for every device
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*/
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data->delFreq = data->freq - data->lstFreq;
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data->lnFreq = log(MAX(data->freq,N_MINLOG));
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data->lnLastFreq = log(MAX(data->lstFreq,N_MINLOG));
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data->delLnFreq = data->lnFreq - data->lnLastFreq;
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if ((job->NStpsSm != 0) && ((step % (job->NStpsSm)) == 0)) {
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data->prtSummary = TRUE;
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} else {
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data->prtSummary = FALSE;
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}
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/*
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data->outNumber = 1;
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*/
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data->outNumber = 0;
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/* the frequency will NOT be stored in array[0] as before; instead,
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* it will be given in refVal.rValue (see later)
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*/
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NInzIter(ckt,posOutNode,negOutNode); /* solve the adjoint system */
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/* now we use the adjoint system to calculate the noise
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* contributions of each generator in the circuit
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*/
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error = CKTnoise(ckt,N_DENS,N_CALC,data);
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if (error) return(error);
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data->lstFreq = data->freq;
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/* update the frequency */
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switch (job->NstpType) {
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case DECADE:
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case OCTAVE:
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data->freq *= job->NfreqDelta;
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break;
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case LINEAR:
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data->freq += job->NfreqDelta;
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break;
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default:
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return(E_INTERN);
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}
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step++;
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if ((job->NnumSteps == 1) && (job->NstpType == LINEAR))
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break;
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}
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error = CKTnoise(ckt,N_DENS,N_CLOSE,data);
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if (error) return(error);
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data->numPlots = 0;
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data->outNumber = 0;
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if (job->NstartFreq != job->NstopFreq) {
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error = CKTnoise(ckt,INT_NOIZ,N_OPEN,data);
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if (error) return(error);
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if (src_type == SV_VOLTAGE)
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fixme_inoise_type =
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data->squared ? SV_SQR_VOLTAGE : SV_VOLTAGE;
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else
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fixme_inoise_type =
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data->squared ? SV_SQR_CURRENT : SV_CURRENT;
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fixme_onoise_type =
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data->squared ? SV_SQR_VOLTAGE : SV_VOLTAGE;
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if (!data->squared)
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for (i = 0; i < data->numPlots; i++)
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data->squared_value[i] =
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ciprefix("inoise", data->namelist[i]) ||
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ciprefix("onoise", data->namelist[i]);
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SPfrontEnd->OUTpBeginPlot (ckt, ckt->CKTcurJob,
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data->squared
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? "Integrated Noise - V^2 or A^2"
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: "Integrated Noise",
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NULL, 0,
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data->numPlots, data->namelist, IF_REAL,
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&(data->NplotPtr));
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error = CKTnoise(ckt,INT_NOIZ,N_CALC,data);
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if (error) return(error);
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error = CKTnoise(ckt,INT_NOIZ,N_CLOSE,data);
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if (error) return(error);
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}
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FREE(data);
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return(OK);
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}
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#endif
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