main1.c

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#include <stdio.h>
#include <cgraph.h>

int main(int argc, char **argv)
{
    Agraph_t *g;
    Agnode_t    *n;
        Agsubnode_t *sn;
    int         sum = 0, i, sum1;
        int             sz = (argc > 1) ? atoi(argv[1]) : 1;
        int             run, nruns = (argc > 2) ? atoi(argv[2]) : 1;
        int             opt = (argc > 3)? atoi(argv[3]) : 0;
        Agnode_t        *N[sz];

        if (argc == 1) fprintf(stderr,"%s nnodes nruns opt\n\topt = 0 for agfstnode/agnxtnode\n\topt = 1 for dtflatten/dtlink\n\topt = 2 for flat array\n",argv[0]);
        g = agopen("g",Agdirected,0);
        for (i = 0; i < sz; i++) {
        n = agnode(g,0,TRUE);
                N[i] = n;
        sum = sum + AGSEQ(n);
    }
        switch(opt) {
        default:
        case 0:
                for (run = 0; run < nruns; run++) {
                        sum1 = 0;
                        for (n = agfstnode(g); n; n = agnxtnode(g,n)) {
                                sum1 = sum1 + AGSEQ(n);
                        }
                        if (sum != sum1) fprintf(stderr,"error\n");
                }
                break;
        case 1:
                for (run = 0; run < nruns; run++) {
                        Dtlink_t *link;
                        sum1 = 0;
                        for (link = dtflatten(g->n_seq); link; link = dtlink(g->n_seq,link)) {
                                sn = (Agsubnode_t*)dtobj(g->n_seq,link);
                                n = sn->node;
                                sum1 = sum1 + AGSEQ(n);
                        }
                        if (sum != sum1) fprintf(stderr,"error\n");
                }
                break;
        case 2:
                for (run = 0; run < nruns; run++) {
                        sum1 = 0;
                        for (i = 0; i < sz; i++) {
                                n = N[i];
                                sum1 = sum1 + AGSEQ(n);
                        }
                        if (sum != sum1) fprintf(stderr,"error\n");
                }
                break;
        }
    return 1;
}