rind 0.1.12

Pure-Rust cryptography for MoQ, forked from graviola
Documentation 
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// Written for Graviola by Joe Birr-Pixton, 2026.
// SPDX-License-Identifier: Apache-2.0 OR ISC OR MIT-0

/// Compute Keccak-f1600 on the first `N` states in `a`.
#[inline]
pub(crate) fn sha3_keccak_nof4_f1600<const N: usize>(a: &mut [[u64; 25]; 4], rc: &[u64; 24]) {
    let a = &mut a[..N];

    match super::cpu::HaveSha3::check() {
        // SAFETY: This branch is only called if the CPU has the SHA3 feature.
        Some(_) => unsafe {
            let (pairs, odd) = a.as_chunks_mut();
            for pair in pairs {
                super::sha3_keccak2_f1600::sha3_keccak2_f1600(pair, rc);
            }
            for a in odd {
                super::sha3_keccak_f1600_alt::sha3_keccak_f1600(a, rc);
            }
        },
        None => {
            for a in a.iter_mut() {
                super::sha3_keccak_f1600::sha3_keccak_f1600(a, rc);
            }
        }
    }
}