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43 lines
1.3 KiB
43 lines
1.3 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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/*
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*CKTnewNode(ckt,node,name)
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* Allocate a new circuit equation number (returned) in the specified
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* circuit to contain a new equation or node
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* returns -1 for failure to allocate a node number
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*
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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/smpdefs.h"
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#include "ngspice/cktdefs.h"
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/* should just call CKTnewEQ and set node type afterwards */
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int
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CKTnewNode(CKTcircuit *ckt, CKTnode **node, IFuid name)
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{
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if(!(ckt->CKTnodes)) { /* starting the list - allocate both ground and 1 */
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ckt->CKTnodes = TMALLOC(CKTnode, 1);
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if(ckt->CKTnodes == NULL) return(E_NOMEM);
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ckt->CKTnodes->name = NULL;
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ckt->CKTnodes->type = SP_VOLTAGE;
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ckt->CKTnodes->number = 0;
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ckt->CKTlastNode = ckt->CKTnodes;
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}
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ckt->CKTlastNode->next = TMALLOC(CKTnode, 1);
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if(ckt->CKTlastNode->next == NULL) return(E_NOMEM);
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ckt->CKTlastNode = ckt->CKTlastNode->next;
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ckt->CKTlastNode->name = name;
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ckt->CKTlastNode->number = ckt->CKTmaxEqNum++;
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ckt->CKTlastNode->type = SP_VOLTAGE;
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ckt->CKTlastNode->next = NULL;
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if(node) *node = ckt->CKTlastNode;
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return(OK);
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}
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