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use swar::*;
#[inline(always)]
pub fn indices128(v: u128) -> [u128; 8] {
let v7 = Bits1(v);
let v6 = v7.sum_weight2();
let v5 = v6.sum_weight2();
let v4 = v5.sum_weight2();
let v3 = v4.sum_weight2();
let v2 = v3.sum_weight2();
let v1 = v2.sum_weight2();
let v0 = v1.sum_weight2();
[v0.0, v1.0, v2.0, v3.0, v4.0, v5.0, v6.0, v7.0]
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_indices128() {
assert_eq!(
indices128(0x0000_0000_0000_0000_0000_0000_0000_0000),
[0, 0, 0, 0, 0, 0, 0, 0]
);
assert_eq!(
indices128(0x0000_0040_0000_0000_0000_0000_0000_0000),
[
1,
1 << 64,
1 << (32 * 3),
1 << (16 * 6),
1 << (8 * 12),
1 << (4 * 25),
1 << (2 * 51),
1 << 102
]
);
}
}