opt_b
static u_int opt_F, opt_I, opt_S, opt_a, opt_b, opt_c, opt_e;
opt_b = argtox(optarg, 1, "block size");
opt_b = 0;
if (opt_b) {
if (!powerof2(opt_b))
errx(1, "block size (%u) is not a power of 2", opt_b);
if (opt_b < bpb.bps)
opt_b, bpb.bps);
if (opt_b > bpb.bps * MAXSPC)
opt_b, bpb.bps * MAXSPC);
bpb.spc = opt_b / bpb.bps;
void opt_b(int, char *);
NUMBER|INIT_HANDLER, 64, &bufspace, opt_b,