= private = protected
ceil()
Returns the smallest Integer greater than or equal to num. Class Numeric achieves this by converting itself to a Float then invoking Float#ceil.
1.ceil #=> 1 1.2.ceil #=> 2 (-1.2).ceil #=> -1 (-1.0).ceil #=> -1
static VALUE num_ceil(VALUE num) { return flo_ceil(rb_Float(num)); }