count4bits
extern int count4bits(u_32_t);
ipmask: ipv4 { $$ = count4bits($1.s_addr); }
| YY_HEX { $$ = count4bits(htonl($1)); }
bits = count4bits($1.m.in4.s_addr);
if (count4bits(maskp->adf_addr.in4.s_addr) == -1)
} else if ((ones = count4bits(*mask)) == -1) {
PRINTF("0/%d", count4bits(addr->na_addr[1].in4.s_addr));
extern int count4bits(u_32_t);
bits = count4bits(ipe->ipe_mask.in4_addr);
k = count4bits(n->in_odstmsk);
k = count4bits(n->in_osrcmsk);
int k = count4bits(n->in_odstmsk);
int k = count4bits(n->in_osrcmsk);