95 lines
2.1 KiB
C
95 lines
2.1 KiB
C
/**********
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Copyright 1990 Regents of the University of California. All rights reserved.
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Author: 1988 Jaijeet S Roychowdhury
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**********/
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#include "ngspice.h"
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#include <stdio.h>
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#include "ifsim.h"
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#include "iferrmsg.h"
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#include "cktdefs.h"
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#include "distodef.h"
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#include "analysis.h"
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/* ARGSUSED */
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int
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DsetParm(CKTcircuit *ckt, void *anal, int which, IFvalue *value)
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{
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switch(which) {
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case D_START:
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if (value->rValue <= 0.0) {
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errMsg = copy("Frequency of 0 is invalid");
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((DISTOAN*)anal)->DstartF1 = 1.0;
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return(E_PARMVAL);
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}
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((DISTOAN*)anal)->DstartF1 = value->rValue;
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break;
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case D_STOP:
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if (value->rValue <= 0.0) {
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errMsg = copy("Frequency of 0 is invalid");
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((DISTOAN*)anal)->DstartF1 = 1.0;
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return(E_PARMVAL);
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}
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((DISTOAN*)anal)->DstopF1 = value->rValue;
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break;
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case D_STEPS:
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((DISTOAN*)anal)->DnumSteps = value->iValue;
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break;
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case D_DEC:
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((DISTOAN*)anal)->DstepType = DECADE;
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break;
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case D_OCT:
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((DISTOAN*)anal)->DstepType = OCTAVE;
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break;
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case D_LIN:
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((DISTOAN*)anal)->DstepType = LINEAR;
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break;
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case D_F2OVRF1:
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((DISTOAN*)anal)->Df2ovrF1 = value->rValue;
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((DISTOAN*)anal)->Df2wanted = 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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return(OK);
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}
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static IFparm Dparms[] = {
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{ "start", D_START, IF_SET|IF_REAL, "starting frequency" },
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{ "stop", D_STOP, IF_SET|IF_REAL, "ending frequency" },
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{ "numsteps", D_STEPS, IF_SET|IF_INTEGER, "number of frequencies" },
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{ "dec", D_DEC, IF_SET|IF_FLAG, "step by decades" },
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{ "oct", D_OCT, IF_SET|IF_FLAG, "step by octaves" },
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{ "lin", D_LIN, IF_SET|IF_FLAG, "step linearly" },
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{ "f2overf1", D_F2OVRF1, IF_SET|IF_REAL, "ratio of F2 to F1" },
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};
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SPICEanalysis DISTOinfo = {
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{
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"DISTO",
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"Small signal distortion analysis",
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sizeof(Dparms)/sizeof(IFparm),
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Dparms
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},
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sizeof(DISTOAN),
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FREQUENCYDOMAIN,
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1,
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DsetParm,
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DaskQuest,
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NULL,
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DISTOan
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};
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