Function hllDenseAdd

app/redis-6.2.6/src/hyperloglog.c:511–516

"Add" the element in the dense hyperloglog data structure. * Actually nothing is added, but the max 0 pattern counter of the subset * the element belongs to is incremented if needed. * * This is just a wrapper to hllDenseSet(), performing the hashing of the * element in order to retrieve the index and zero-run count. */

 * This is just a wrapper to hllDenseSet(), performing the hashing of the
 * element in order to retrieve the index and zero-run count. */
int hllDenseAdd(uint8_t *registers, unsigned char *ele, size_t elesize) {
    long index;
    uint8_t count = hllPatLen(ele,elesize,&index);
    /* Update the register if this element produced a longer run of zeroes. */
    return hllDenseSet(registers,index,count);
}

/* Compute the register histogram in the dense representation. */
void hllDenseRegHisto(uint8_t *registers, int* reghisto) {