1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
//! Returns the four `u64` limbs in little-endian order.
use super::U256;
impl U256 {
/// Returns the four `u64` limbs in little-endian order.
///
/// The returned array is `[w3, w2, w1, w0]` where the first element
/// is the least significant limb and the last element is the most
/// significant limb.
///
/// # Examples
///
/// ```
/// use cnfy_uint::u256::U256;
///
/// let v = U256::from_be_limbs([1, 2, 3, 4]);
/// assert_eq!(v.to_le_limbs(), [4, 3, 2, 1]);
/// ```
#[inline]
pub const fn to_le_limbs(&self) -> [u64; 4] {
self.0
}
}
#[cfg(test)]
mod ai_tests {
use super::*;
/// to_le_limbs reverses the big-endian order.
#[test]
fn le_limbs_reverses() {
let v = U256::from_be_limbs([1, 2, 3, 4]);
assert_eq!(v.to_le_limbs(), [4, 3, 2, 1]);
}
/// Zero in little-endian is still all zeros.
#[test]
fn le_limbs_zero() {
assert_eq!(U256::ZERO.to_le_limbs(), [0; 4]);
}
/// Max value in little-endian is still all MAX.
#[test]
fn le_limbs_max() {
let v = U256::from_be_limbs([u64::MAX; 4]);
assert_eq!(v.to_le_limbs(), [u64::MAX; 4]);
}
}