days_in_month     468 clib/datime.c        ret += days_in_month(d_year, i);
days_in_month      51 include/datime.h int days_in_month(int, int);
days_in_month     793 source/sched.c          modays = days_in_month(year_num, month_num);
days_in_month     981 source/sched.c             modays = days_in_month(year_num, month_num);