ressetup.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 52 行

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

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


/* ARGSUSED */
int
RESsetup(matrix,inModel,ckt,state)
    register SMPmatrix *matrix;
    GENmodel *inModel;
    CKTcircuit*ckt;
    int *state;
        /* load the resistor structure with those pointers needed later 
         * for fast matrix loading 
         */
{
    register RESmodel *model = (RESmodel *)inModel;
    register RESinstance *here;

    /*  loop through all the resistor models */
    for( ; model != NULL; model = model->RESnextModel ) {

        /* loop through all the instances of the model */
        for (here = model->RESinstances; here != NULL ;
                here=here->RESnextInstance) {
            
/* macro to make elements with built in test for out of memory */
#define TSTALLOC(ptr,first,second) \
if((here->ptr = SMPmakeElt(matrix,here->first,here->second))==(double *)NULL){\
    return(E_NOMEM);\
}

            TSTALLOC(RESposPosptr, RESposNode, RESposNode);
            TSTALLOC(RESnegNegptr, RESnegNode, RESnegNode);
            TSTALLOC(RESposNegptr, RESposNode, RESnegNode);
            TSTALLOC(RESnegPosptr, RESnegNode, RESposNode);
        }
    }
    return(OK);
}