leap_year_v_p 1892 time.c vtm->yday = leap_year_v_p(vtm->year) ? 365 : 364; leap_year_v_p 1895 time.c const int *days_in_month = leap_year_v_p(vtm->year) ? leap_year_v_p 1909 time.c int leap = leap_year_v_p(vtm->year);