int scanhash_heavy(int thr_id, uint32_t *pdata, const uint32_t *ptarget,
uint32_t max_nonce, uint64_t *hashes_done)
{
uint32_t n = pdata[19] - 1;
const uint32_t first_nonce = pdata[19];
const uint32_t Htarg = ptarget[7];
uint32_t hash64[8] __attribute__((aligned(32)));
uint64_t htmax[] = {
0,
0xF,
0xFF,
0xFFF,
0xFFFF,
0x10000000
};
uint32_t masks[] = {
0xFFFFFFFF,
0xFFFFFFF0,
0xFFFFFF00,
0xFFFFF000,
0xFFFF0000,
0
};
#ifdef DEBUG_ALGO
printf("[%d] Htarg=%X\n", thr_id, Htarg);
#endif
for (int m=0; m < sizeof(masks); m++) {
if (Htarg <= htmax[m]) {
uint32_t mask = masks[m];
do {
pdata[19] = ++n;
heavyhash(hash64, &pdata);
#ifndef DEBUG_ALGO
if ((!(hash64[7] & mask)) && fulltest(hash64, ptarget)) {
*hashes_done = n - first_nonce + 1;
return true;
}
#else
if (!(n % 0x1000) && !thr_id) printf(".");
if (!(hash64[7] & mask)) {
printf("[%d]",thr_id);
if (fulltest(hash64, ptarget)) {
*hashes_done = n - first_nonce + 1;
return true;
}
}
#endif
} while (n < max_nonce && !work_restart[thr_id].restart);
// see blake.c if else to understand the loop on htmax => mask
break;
}
}
*hashes_done = n - first_nonce + 1;
pdata[19] = n;
return 0;
}
int scanhash_heavy(int thr_id, uint32_t *pdata, const uint32_t *ptarget,
uint32_t max_nonce, uint64_t *hashes_done)
{
uint32_t hash[8];
uint32_t start_nonce = pdata[19];
do {
heavyhash((unsigned char *)hash, (unsigned char *)pdata, 80);
if (hash[7] <= ptarget[7]) {
if (fulltest(hash, ptarget)) {
*hashes_done = pdata[19] - start_nonce;
return 1;
break;
}
}
pdata[19]++;
} while (pdata[19] < max_nonce && !work_restart[thr_id].restart);
*hashes_done = pdata[19] - start_nonce;
return 0;
}
