zero_thru_1899    917 maint/gnulib/lib/nstrftime.c             bool zero_thru_1899 = !negative_year & (tp->tm_year < 0);
zero_thru_1899    918 maint/gnulib/lib/nstrftime.c             int century = ((tp->tm_year - 99 * zero_thru_1899) / 100