firstReorder = 1;
int numReorder = 1;
    int bdd_constrain(int f, int c) {        int res;        firstReorder = 1;        CHECKa(f, bddfalse);        CHECKa(c, bddfalse);        if (misccache == null) misccache = BddCacheI_init(cachesize);                again : for (;;) {            try {                INITREF();                miscid = CACHEID_CONSTRAIN;                if (firstReorder == 0)                    bdd_disable_reorder();                res = constrain_rec(f, c);                if (firstReorder == 0)                    bdd_enable_reorder();            } catch (ReorderException x) {                bdd_checkreorder();                if (firstReorder-- == 1)                    continue again;                res = BDDZERO;                /* avoid warning about res being uninitialized */            }            break;        }        checkresize();        return res;    }