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Merge pull request #290 from AchcarLucas/improvement-getNextExtranonce2

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Improvement getNextExtranonce2 and create getRandomExtranonce2
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BitMaker 2024-05-25 22:34:45 +02:00 committed by GitHub
commit 0a22a19e04
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1 changed files with 28 additions and 12 deletions
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src/utils.cpp
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@ -136,21 +136,37 @@ bool checkValid(unsigned char* hash, unsigned char* target) {
return valid; return valid;
} }
/**
* get random extranonce2
*/
void getRandomExtranonce2(int extranonce2_size, char *extranonce2) {
uint8_t b0, b1, b2, b3;
b0 = rand() % 256;
b1 = rand() % 256;
b2 = rand() % 256;
b3 = rand() % 256;
unsigned long extranonce2_number = b3 << 24 | b2 << 16 | b1 << 8 | b0;
char format[] = "%00x";
sprintf(&format[1], "%02dx", extranonce2_size * 2);
sprintf(extranonce2, format, extranonce2_number);
}
/**
* get linear extranonce2
*/
void getNextExtranonce2(int extranonce2_size, char *extranonce2) { void getNextExtranonce2(int extranonce2_size, char *extranonce2) {
unsigned long extranonce2_number = strtoul(extranonce2, NULL, 10); unsigned long extranonce2_number = strtoul(extranonce2, NULL, 10);
extranonce2_number++; extranonce2_number++;
memset(extranonce2, '0', 2 * extranonce2_size); char format[] = "%00x";
if (extranonce2_number > long(pow(10, 2 * extranonce2_size))) {
return; sprintf(&format[1], "%02dx", extranonce2_size * 2);
} sprintf(extranonce2, format, extranonce2_number);
char next_extranounce2[2 * extranonce2_size + 1];
memset(extranonce2, '0', 2 * extranonce2_size);
ultoa(extranonce2_number, next_extranounce2, 10);
memcpy(extranonce2 + (2 * extranonce2_size) - long(log10(extranonce2_number)) - 1 , next_extranounce2, strlen(next_extranounce2));
extranonce2[2 * extranonce2_size] = 0;
} }
miner_data init_miner_data(void){ miner_data init_miner_data(void){