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);