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42 lines
1.0 KiB
42 lines
1.0 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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*/
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/*
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* NIinit(nistruct,loadpkg)
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*
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* Initialize the Numerical iteration package to perform Newton-Raphson
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* iterations on a sparse matrix filled by the specified load package,
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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 "ngspice/sperror.h"
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#include "ngspice/smpdefs.h"
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#ifdef KLU
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#include "ngspice/klu.h"
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#endif
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int
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NIinit(CKTcircuit *ckt)
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{
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#ifdef SPARSE
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/* a concession to Ken Kundert's sparse matrix package - SMP doesn't need this*/
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int Error;
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#endif /* SPARSE */
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/* Allocation of the new SMPmatrix structure - Francesco Lannutti (2012-02) */
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ckt->CKTmatrix = TMALLOC (SMPmatrix, 1) ;
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#ifdef KLU
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ckt->CKTmatrix->CKTkluMODE = ckt->CKTkluMODE ; /* TO BE SUBSTITUTED WITH THE HEURISTICS */
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ckt->CKTmatrix->CKTkluMemGrowFactor = ckt->CKTkluMemGrowFactor ;
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#endif
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ckt->CKTniState = NIUNINITIALIZED;
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return SMPnewMatrix(ckt->CKTmatrix, 0);
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}
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