+ case BBS_STEP:
+ bbs_step(&g->b);
+ break;
+ case BBS_STEPSZ:
+ rc = g->b.k;
+ break;
+ case BBS_BITS: {
+ unsigned nb = va_arg(ap, unsigned);
+ uint32 *w = va_arg(ap, uint32 *);
+ *w = bbs_bits(&g->b, nb);
+ } break;
+ case BBS_WRAP:
+ bbs_wrap(&g->b);
+ break;
+ case BBS_FF: {
+ const bbs_priv *bp = va_arg(ap, const bbs_priv *);
+ mp *n = va_arg(ap, mp *);
+ bbs_ff(&g->b, bp, n);
+ } break;
+ case BBS_FFN: {
+ const bbs_priv *bp = va_arg(ap, const bbs_priv *);
+ unsigned long n = va_arg(ap, unsigned long);
+ bbs_ffn(&g->b, bp, n);
+ } break;
+ case BBS_REW: {
+ const bbs_priv *bp = va_arg(ap, const bbs_priv *);
+ mp *n = va_arg(ap, mp *);
+ bbs_rew(&g->b, bp, n);
+ } break;
+ case BBS_REWN: {
+ const bbs_priv *bp = va_arg(ap, const bbs_priv *);
+ unsigned long n = va_arg(ap, unsigned long);
+ bbs_rewn(&g->b, bp, n);
+ } break;
+ case BBS_MOD: {
+ mp **n = va_arg(ap, mp **);
+ if (*n) MP_DROP(*n);
+ *n = MP_COPY(g->b.mb.m);
+ } break;
+ case BBS_STATE: {
+ mp **n = va_arg(ap, mp **);
+ if (*n) MP_DROP(*n);
+ *n = MP_COPY(g->b.x);
+ } break;