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71 lines
2.3 KiB
71 lines
2.3 KiB
/**********
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Copyright 1990 Regents of the University of California. All rights reserved.
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Author: 1985 Gordon Jacobs
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**********/
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/*
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*/
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#include "ngspice/ngspice.h"
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#include "ngspice/cktdefs.h"
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#include "cswdefs.h"
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#include "ngspice/sperror.h"
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#include "ngspice/suffix.h"
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int
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CSWsetup(SMPmatrix *matrix, GENmodel *inModel, CKTcircuit *ckt, int *states)
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/* load the switch conductance with those pointers needed later
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* for fast matrix loading
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*/
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{
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CSWmodel *model = (CSWmodel*)inModel;
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CSWinstance *here;
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/* loop through all the current source models */
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for( ; model != NULL; model = model->CSWnextModel ) {
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/* Default Value Processing for Switch Model */
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if (!model->CSWthreshGiven) {
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model->CSWiThreshold = 0;
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}
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if (!model->CSWhystGiven) {
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model->CSWiHysteresis = 0;
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}
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if (!model->CSWonGiven) {
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model->CSWonConduct = CSW_ON_CONDUCTANCE;
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model->CSWonResistance = 1.0/model->CSWonConduct;
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}
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if (!model->CSWoffGiven) {
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model->CSWoffConduct = CSW_OFF_CONDUCTANCE;
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model->CSWoffResistance = 1.0/model->CSWoffConduct;
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}
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/* loop through all the instances of the model */
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for (here = model->CSWinstances; here != NULL ;
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here=here->CSWnextInstance) {
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/* Default Value Processing for Switch Instance */
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here->CSWstate = *states;
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*states += CSW_NUM_STATES;
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here->CSWcontBranch = CKTfndBranch(ckt,here->CSWcontName);
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if(here->CSWcontBranch == 0) {
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SPfrontEnd->IFerrorf (ERR_FATAL,
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"%s: unknown controlling source %s", here->CSWname, here->CSWcontName);
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return(E_BADPARM);
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}
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/* macro to make elements with built in test for out of memory */
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#define TSTALLOC(ptr,first,second) \
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do { if((here->ptr = SMPmakeElt(matrix, here->first, here->second)) == NULL){\
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return(E_NOMEM);\
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} } while(0)
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TSTALLOC(CSWposPosptr, CSWposNode, CSWposNode);
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TSTALLOC(CSWposNegptr, CSWposNode, CSWnegNode);
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TSTALLOC(CSWnegPosptr, CSWnegNode, CSWposNode);
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TSTALLOC(CSWnegNegptr, CSWnegNode, CSWnegNode);
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}
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}
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return(OK);
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}
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