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66 lines
2.0 KiB
66 lines
2.0 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/smpdefs.h"
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#include "ngspice/cktdefs.h"
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#include "swdefs.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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SWsetup(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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SWmodel *model = (SWmodel *)inModel;
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SWinstance *here;
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/* loop through all the current source models */
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for( ; model != NULL; model = model->SWnextModel ) {
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/* Default Value Processing for Switch Model */
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if (!model->SWthreshGiven) {
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model->SWvThreshold = 0;
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}
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if (!model->SWhystGiven) {
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model->SWvHysteresis = 0;
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}
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if (!model->SWonGiven) {
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model->SWonConduct = SW_ON_CONDUCTANCE;
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model->SWonResistance = 1.0/model->SWonConduct;
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}
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if (!model->SWoffGiven) {
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model->SWoffConduct = SW_OFF_CONDUCTANCE;
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model->SWoffResistance = 1.0/model->SWoffConduct;
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}
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/* loop through all the instances of the model */
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for (here = model->SWinstances; here != NULL ;
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here=here->SWnextInstance) {
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here->SWstate = *states;
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*states += SW_NUM_STATES;
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/* Default Value Processing for Switch Instance */
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/* none */
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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(SWposPosptr, SWposNode, SWposNode);
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TSTALLOC(SWposNegptr, SWposNode, SWnegNode);
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TSTALLOC(SWnegPosptr, SWnegNode, SWposNode);
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TSTALLOC(SWnegNegptr, SWnegNode, SWnegNode);
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}
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}
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return(OK);
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}
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