howmany 86 netinet6/ip6_mroute.h #define howmany(x, y) (((x) + ((y) - 1)) / (y)) howmany 186 sys/param.h #define howmany(x, y) (((x)+((y)-1))/(y)) howmany 82 sys/select.h #define howmany(x, y) __howmany(x, y)