fn storeCvWords(cv_words: [8]u32) [Blake3.digest_length]u8
fn storeCvWords(cv_words: [8]u32) [Blake3.digest_length]u8 { var bytes: [Blake3.digest_length]u8 = undefined; for (0..8) |i| { store32(bytes[i * 4 ..][0..4], cv_words[i]); } return bytes; }