1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
use num::arithmetic::traits::CheckedAdd;
macro_rules! impl_checked_add {
($t:ident) => {
impl CheckedAdd<$t> for $t {
type Output = $t;
/// This is a wrapper over the `checked_add` functions in the standard library, for
/// example [this one](u32::checked_add).
#[inline]
fn checked_add(self, other: $t) -> Option<$t> {
$t::checked_add(self, other)
}
}
};
}
apply_to_primitive_ints!(impl_checked_add);