ceill              27 maint/gnulib/lib/ceill.c ceill (long double x)
ceill             510 maint/gnulib/lib/math.in.h #   undef ceill
ceill             511 maint/gnulib/lib/math.in.h #   define ceill rpl_ceill
ceill             517 maint/gnulib/lib/math.in.h #   undef ceill
ceill             526 maint/gnulib/lib/math.in.h # undef ceill