81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
/**********
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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/smpdefs.h"
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#include "ngspice/cktdefs.h"
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#include "vsrcdefs.h"
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#include "ngspice/sperror.h"
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#include "ngspice/suffix.h"
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/* ARGSUSED */
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int
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VSRCsetup(SMPmatrix *matrix, GENmodel *inModel, CKTcircuit *ckt, int *state)
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/* load the voltage source structure 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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VSRCmodel *model = (VSRCmodel *)inModel;
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VSRCinstance *here;
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CKTnode *tmp;
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int error;
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NG_IGNORE(state);
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/* loop through all the voltage source models */
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for( ; model != NULL; model = model->VSRCnextModel ) {
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/* loop through all the instances of the model */
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for (here = model->VSRCinstances; here != NULL ;
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here=here->VSRCnextInstance) {
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if(here->VSRCposNode == here->VSRCnegNode) {
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SPfrontEnd->IFerrorf (ERR_FATAL,
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"instance %s is a shorted VSRC", here->VSRCname);
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return(E_UNSUPP);
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}
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if(here->VSRCbranch == 0) {
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error = CKTmkCur(ckt,&tmp,here->VSRCname,"branch");
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if(error) return(error);
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here->VSRCbranch = tmp->number;
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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(VSRCposIbrptr, VSRCposNode, VSRCbranch);
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TSTALLOC(VSRCnegIbrptr, VSRCnegNode, VSRCbranch);
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TSTALLOC(VSRCibrNegptr, VSRCbranch, VSRCnegNode);
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TSTALLOC(VSRCibrPosptr, VSRCbranch, VSRCposNode);
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}
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}
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return(OK);
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}
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int
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VSRCunsetup(GENmodel *inModel, CKTcircuit *ckt)
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{
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VSRCmodel *model;
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VSRCinstance *here;
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for (model = (VSRCmodel *)inModel; model != NULL;
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model = model->VSRCnextModel)
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{
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for (here = model->VSRCinstances; here != NULL;
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here=here->VSRCnextInstance)
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{
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if (here->VSRCbranch) {
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CKTdltNNum(ckt, here->VSRCbranch);
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here->VSRCbranch = 0;
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}
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}
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}
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return OK;
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}
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