GOSTCoin CUDA miner project, compatible with most nvidia cards, containing only gostd algo
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/**
* 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);
}