You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
59 lines
1.3 KiB
59 lines
1.3 KiB
/** |
|
* Wrapper to OpenSSL BIGNUM used by net diff (nBits) |
|
*/ |
|
|
|
#include <stdio.h> |
|
|
|
#include "uint256.h" |
|
#include "bignum.hpp" |
|
|
|
#include "miner.h" // hex2bin |
|
|
|
extern "C" double bn_convert_nbits(const uint32_t nBits) |
|
{ |
|
uint256 bn = CBigNum().SetCompact(nBits).getuint256(); |
|
return bn.getdouble(); |
|
} |
|
|
|
// copy the big number to 32-bytes uchar |
|
extern "C" void bn_nbits_to_uchar(const uint32_t nBits, unsigned char *target) |
|
{ |
|
char buff[65]; |
|
uint256 bn = CBigNum().SetCompact(nBits).getuint256(); |
|
|
|
snprintf(buff, 65, "%s\n", bn.ToString().c_str()); buff[64] = '\0'; |
|
hex2bin(target, buff, 32); |
|
} |
|
|
|
extern "C" double bn_hash_target_ratio(uint32_t* hash, uint32_t* target) |
|
{ |
|
unsigned char* uc; |
|
double dhash; |
|
|
|
if (!opt_showdiff) |
|
return 0.0; |
|
|
|
CBigNum h(0), t(0); |
|
std::vector<unsigned char> vch(32); |
|
|
|
memcpy(&vch[0], (void*) target, 32); |
|
t.setvch(vch); |
|
memcpy(&vch[0], (void*) hash, 32); |
|
h.setvch(vch); |
|
|
|
dhash = h.getuint256().getdouble(); |
|
if (dhash > 0.) |
|
return t.getuint256().getdouble() / dhash; |
|
else |
|
return dhash; |
|
} |
|
|
|
// store ratio in work struct |
|
extern "C" void bn_store_hash_target_ratio(uint32_t* hash, uint32_t* target, struct work* work) |
|
{ |
|
// only if the option is enabled (to reduce cpu usage) |
|
if (opt_showdiff) { |
|
work->shareratio = bn_hash_target_ratio(hash, target); |
|
work->sharediff = work->targetdiff * work->shareratio; |
|
} |
|
}
|
|
|