numeric.c (flo_ceil_floor): return bigint if possible.
MODIFY
src/numeric.c
src/numeric.c
@@ -850,6 +850,13 @@ flo_ceil_floor(mrb_state *mrb, mrb_value num, double (*func)(double))
f = func(f);
}
mrb_check_num_exact(mrb, f);
+ if (!FIXABLE_FLOAT(f)) {
+#ifdef MRB_USE_BIGINT
+ return mrb_bint_new_float(mrb, f);
+#else
+ mrb_int_overflow(mrb, "rounding");
+#endif
+ }
return mrb_int_value(mrb, (mrb_int)f);
}

numeric.c (flo_ceil_floor): return bigint if possible.