nireinit.c

来自「linux平台下类似著名的电路板作图软件 Spice的源代码」· C语言 代码 · 共 48 行

/**********
Copyright 1990 Regents of the University of California.  All rights reserved.
Author: 1985 Thomas L. Quarles
**********/

    /* NIreinit(ckt)
     *  Perform reinitialization necessary for the numerical iteration
     *  package - the matrix has now been fully accessed once, so we know
     *  how big it is, so allocate RHS vector
     */

#include "spice.h"
#include "cktdefs.h"
#include <stdio.h>
#include "util.h"
#include "smpdefs.h"
#include "sperror.h"
#include "suffix.h"


#define CKALLOC(ptr,size,type) if(( ckt->ptr =\
    (type *) MALLOC((size)*sizeof(type))) == NULL) return(E_NOMEM);

int
NIreinit(ckt)
    register CKTcircuit *ckt;

{
    register int size;
    register int i;

    size = SMPmatSize(ckt->CKTmatrix);
    CKALLOC(CKTrhs,size+1,double);
    CKALLOC(CKTrhsOld,size+1,double);
    CKALLOC(CKTrhsSpare,size+1,double);
    CKALLOC(CKTirhs,size+1,double);
    CKALLOC(CKTirhsOld,size+1,double);
    CKALLOC(CKTirhsSpare,size+1,double);
#ifdef PREDICTOR
    CKALLOC(CKTpred,size+1,double);
    for(i=0;i<8;i++) {
        CKALLOC(CKTsols[i],size+1,double);
    }
#endif /* PREDICTOR */
    ckt->CKTniState = NISHOULDREORDER | NIACSHOULDREORDER | NIPZSHOULDREORDER;
    return(0);
}