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87 lines
2.1 KiB
87 lines
2.1 KiB
/**********
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Copyright 1990 Regents of the University of California. All rights reserved.
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Author: 1985 Thomas L. Quarles
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**********/
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#include "ngspice/ngspice.h"
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#include "ngspice/ifsim.h"
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#include "ngspice/iferrmsg.h"
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#include "ngspice/trandefs.h"
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#include "ngspice/cktdefs.h"
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#include "analysis.h"
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/* ARGSUSED */
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int
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TRANsetParm(CKTcircuit *ckt, JOB *anal, int which, IFvalue *value)
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{
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#define job ((TRANan *) anal)
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NG_IGNORE(ckt);
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switch(which) {
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case TRAN_TSTOP:
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if (value->rValue <= 0.0) {
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errMsg = copy("TST0P is invalid, must be greater than zero.");
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job->TRANfinalTime = 1.0;
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return(E_PARMVAL);
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}
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job->TRANfinalTime = value->rValue;
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break;
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case TRAN_TSTEP:
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if (value->rValue <= 0.0) {
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errMsg = copy( "TSTEP is invalid, must be greater than zero." );
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job->TRANstep = 1.0;
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return(E_PARMVAL);
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}
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job->TRANstep = value->rValue;
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break;
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case TRAN_TSTART:
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if (value->rValue >= job->TRANfinalTime) {
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errMsg = copy("TSTART is invalid, must be less than TSTOP.");
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job->TRANinitTime = 0.0;
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return(E_PARMVAL);
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}
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job->TRANinitTime = value->rValue;
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break;
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case TRAN_TMAX:
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job->TRANmaxStep = value->rValue;
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break;
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case TRAN_UIC:
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if(value->iValue) {
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job->TRANmode |= MODEUIC;
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}
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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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return(OK);
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}
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static IFparm TRANparms[] = {
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{ "tstart", TRAN_TSTART, IF_SET|IF_REAL, "starting time" },
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{ "tstop", TRAN_TSTOP, IF_SET|IF_REAL, "ending time" },
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{ "tstep", TRAN_TSTEP, IF_SET|IF_REAL, "time step" },
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{ "tmax", TRAN_TMAX, IF_SET|IF_REAL, "maximum time step" },
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{ "uic", TRAN_UIC, IF_SET|IF_FLAG, "use initial conditions" },
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};
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SPICEanalysis TRANinfo = {
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{
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"TRAN",
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"Transient analysis",
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NUMELEMS(TRANparms),
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TRANparms
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},
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sizeof(TRANan),
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TIMEDOMAIN,
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1,
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TRANsetParm,
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TRANaskQuest,
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TRANinit,
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DCtran
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};
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