Calculates the quotient of `self` and `rhs`, rounding the result towards positive infinity.
# Panics
This function will panic if `rhs` is zero.
# Examples
Basic usage:
```
# use ::exint::primitive::*;
# ::exint::uint! {
assert_eq!(7_u24.div_ceil(4_u24), 2_u24);
# }
```