f_floor          1043 ext/date/date_core.c     return f_floor(d);
f_floor          1053 ext/date/date_core.c     return f_floor(s);
f_floor          1064 ext/date/date_core.c     return f_floor(n);
f_floor          5648 ext/date/date_core.c 		nth = f_floor(DBL2NUM(i));