1pub fn to_usize(x: isize) -> usize {
2 let double_x = x << 1;
3
4 if x.is_positive() || x == 0 {
5 double_x as usize
6 } else {
7 (-double_x - 1) as usize
8 }
9}
10
11pub fn to_isize(u: usize) -> isize {
12 ((u >> 1) as isize) ^ (-((u & 1) as isize))
13}
14
15pub fn to_u128(x: i128) -> u128 {
16 let double_x = x << 1;
17
18 if x.is_positive() || x == 0 {
19 double_x as u128
20 } else {
21 (-double_x - 1) as u128
22 }
23}
24
25pub fn to_i128(u: u128) -> i128 {
26 ((u >> 1) as i128) ^ (-((u & 1) as i128))
27}