Function crc_reflect

app/redis-6.2.6/src/crc64.c:69–78

* Reflect all bits of a \a data word of \a data_len bytes. * * \param data The data word to be reflected. * \param data_len The width of \a data expressed in number of bits. * \return The reflected data. *****************************************************************************/

 * \return             The reflected data.
 *****************************************************************************/
static inline uint_fast64_t crc_reflect(uint_fast64_t data, size_t data_len) {
    uint_fast64_t ret = data & 0x01;

    for (size_t i = 1; i < data_len; i++) {
        data >>= 1;
        ret = (ret << 1) | (data & 0x01);
    }

    return ret;
}

/**
 *  Update the crc value with new data.