Function dist_token_hash_update

ds4_distributed.c:1495–1502

#define DS4_DIST_TOKEN_HASH_PRIME 1099511628211ull

static uint64_t dist_token_hash_update(uint64_t h, int token) {
    uint32_t t = (uint32_t)token;
    for (int i = 0; i < 4; i++) {
        h ^= (uint64_t)((t >> (i * 8)) & 0xffu);
        h *= DS4_DIST_TOKEN_HASH_PRIME;
    }
    return h;
}

static uint64_t dist_token_hash_update_span(uint64_t h, const int *tokens, uint32_t n_tokens) {
    for (uint32_t i = 0; i < n_tokens; i++) h = dist_token_hash_update(h, tokens[i]);