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<a href="pow_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright (c) 2009-2010 Satoshi Nakamoto</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Copyright (c) 2009-2015 The Bitcoin Core developers</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Distributed under the MIT software license, see the accompanying</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// file COPYING or http://www.opensource.org/licenses/mit-license.php.</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> </div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#ifndef BITCOIN_POW_H</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#define BITCOIN_POW_H</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include "<a class="code" href="params_8h.html">consensus/params.h</a>"</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <stdint.h></span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="keyword">class </span><a class="code" href="classCBlockHeader.html">CBlockHeader</a>;</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="keyword">class </span><a class="code" href="classCBlockIndex.html">CBlockIndex</a>;</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">class </span><a class="code" href="classuint256.html">uint256</a>;</div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">class </span><a class="code" href="classarith__uint256.html">arith_uint256</a>;</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// Define difficulty retarget algorithms</span></div><div class="line"><a name="l00019"></a><span class="lineno"><a class="line" href="pow_8h.html#a8f131530ac35e565b56cfc1e857e5f02"> 19</a></span> <span class="keyword">enum</span> <a class="code" href="pow_8h.html#a8f131530ac35e565b56cfc1e857e5f02">DiffMode</a> {</div><div class="line"><a name="l00020"></a><span class="lineno"><a class="line" href="pow_8h.html#a8f131530ac35e565b56cfc1e857e5f02af99a307706bc56fe7605537d603d7e24"> 20</a></span>  <a class="code" href="pow_8h.html#a8f131530ac35e565b56cfc1e857e5f02af99a307706bc56fe7605537d603d7e24">DIFF_DEFAULT</a> = 0, <span class="comment">// Default to invalid 0</span></div><div class="line"><a name="l00021"></a><span class="lineno"><a class="line" href="pow_8h.html#a8f131530ac35e565b56cfc1e857e5f02a135929a05c72016124855105d3d24851"> 21</a></span>  <a class="code" href="pow_8h.html#a8f131530ac35e565b56cfc1e857e5f02a135929a05c72016124855105d3d24851">DIFF_BTC</a> = 1, <span class="comment">// Retarget every x blocks (Bitcoin style)</span></div><div class="line"><a name="l00022"></a><span class="lineno"><a class="line" href="pow_8h.html#a8f131530ac35e565b56cfc1e857e5f02a989bf0976493af2171e71c38be869c98"> 22</a></span>  <a class="code" href="pow_8h.html#a8f131530ac35e565b56cfc1e857e5f02a989bf0976493af2171e71c38be869c98">DIFF_KGW</a> = 2, <span class="comment">// Retarget using Kimoto Gravity Well</span></div><div class="line"><a name="l00023"></a><span class="lineno"><a class="line" href="pow_8h.html#a8f131530ac35e565b56cfc1e857e5f02a31825da354804760c6916ecfed7a586a"> 23</a></span>  <a class="code" href="pow_8h.html#a8f131530ac35e565b56cfc1e857e5f02a31825da354804760c6916ecfed7a586a">DIFF_DGW</a> = 3, <span class="comment">// Retarget using Dark Gravity Wave v3</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> };</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="pow_8h.html#a4f7bb22f6a188117b401966decb048b5">GetNextWorkRequired</a>(<span class="keyword">const</span> <a class="code" href="classCBlockIndex.html">CBlockIndex</a>* pindexLast, <span class="keyword">const</span> <a class="code" href="classCBlockHeader.html">CBlockHeader</a> *pblock, <span class="keyword">const</span> <a class="code" href="structConsensus_1_1Params.html">Consensus::Params</a>&);</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="pow_8h.html#ae040e051ee33e04c33124b0742480f0c">CalculateNextWorkRequired</a>(<span class="keyword">const</span> <a class="code" href="classCBlockIndex.html">CBlockIndex</a>* pindexLast, int64_t nFirstBlockTime, <span class="keyword">const</span> <a class="code" href="structConsensus_1_1Params.html">Consensus::Params</a>&);</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keywordtype">bool</span> <a class="code" href="pow_8h.html#a8d60d8d6ddca0963bb51f6436aaee3fd">CheckProofOfWork</a>(<a class="code" href="classuint256.html">uint256</a> hash, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> nBits, <span class="keyword">const</span> <a class="code" href="structConsensus_1_1Params.html">Consensus::Params</a>&);</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <a class="code" href="classarith__uint256.html">arith_uint256</a> <a class="code" href="pow_8h.html#a334aa8015cc7185f7fdf484783e40f38">GetBlockProof</a>(<span class="keyword">const</span> <a class="code" href="classCBlockIndex.html">CBlockIndex</a>& block);</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> int64_t <a class="code" href="pow_8h.html#a6f922f61b23b0fc46182f8ab457af736">GetBlockProofEquivalentTime</a>(<span class="keyword">const</span> <a class="code" href="classCBlockIndex.html">CBlockIndex</a>& to, <span class="keyword">const</span> <a class="code" href="classCBlockIndex.html">CBlockIndex</a>& from, <span class="keyword">const</span> <a class="code" href="classCBlockIndex.html">CBlockIndex</a>& tip, <span class="keyword">const</span> <a class="code" href="structConsensus_1_1Params.html">Consensus::Params</a>&);</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#endif // BITCOIN_POW_H</span></div><div class="ttc" id="pow_8h_html_a4f7bb22f6a188117b401966decb048b5"><div class="ttname"><a href="pow_8h.html#a4f7bb22f6a188117b401966decb048b5">GetNextWorkRequired</a></div><div class="ttdeci">unsigned int GetNextWorkRequired(const CBlockIndex *pindexLast, const CBlockHeader *pblock, const Consensus::Params &)</div><div class="ttdef"><b>Definition:</b> <a href="pow_8cpp_source.html#l00172">pow.cpp:172</a></div></div>
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<div class="ttc" id="pow_8h_html_a8f131530ac35e565b56cfc1e857e5f02"><div class="ttname"><a href="pow_8h.html#a8f131530ac35e565b56cfc1e857e5f02">DiffMode</a></div><div class="ttdeci">DiffMode</div><div class="ttdef"><b>Definition:</b> <a href="pow_8h_source.html#l00019">pow.h:19</a></div></div>
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<div class="ttc" id="pow_8h_html_a8f131530ac35e565b56cfc1e857e5f02af99a307706bc56fe7605537d603d7e24"><div class="ttname"><a href="pow_8h.html#a8f131530ac35e565b56cfc1e857e5f02af99a307706bc56fe7605537d603d7e24">DIFF_DEFAULT</a></div><div class="ttdef"><b>Definition:</b> <a href="pow_8h_source.html#l00020">pow.h:20</a></div></div>
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<div class="ttc" id="pow_8h_html_a8f131530ac35e565b56cfc1e857e5f02a31825da354804760c6916ecfed7a586a"><div class="ttname"><a href="pow_8h.html#a8f131530ac35e565b56cfc1e857e5f02a31825da354804760c6916ecfed7a586a">DIFF_DGW</a></div><div class="ttdef"><b>Definition:</b> <a href="pow_8h_source.html#l00023">pow.h:23</a></div></div>
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<div class="ttc" id="pow_8h_html_a8f131530ac35e565b56cfc1e857e5f02a135929a05c72016124855105d3d24851"><div class="ttname"><a href="pow_8h.html#a8f131530ac35e565b56cfc1e857e5f02a135929a05c72016124855105d3d24851">DIFF_BTC</a></div><div class="ttdef"><b>Definition:</b> <a href="pow_8h_source.html#l00021">pow.h:21</a></div></div>
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<div class="ttc" id="structConsensus_1_1Params_html"><div class="ttname"><a href="structConsensus_1_1Params.html">Consensus::Params</a></div><div class="ttdef"><b>Definition:</b> <a href="params_8h_source.html#l00043">params.h:43</a></div></div>
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<div class="ttc" id="pow_8h_html_ae040e051ee33e04c33124b0742480f0c"><div class="ttname"><a href="pow_8h.html#ae040e051ee33e04c33124b0742480f0c">CalculateNextWorkRequired</a></div><div class="ttdeci">unsigned int CalculateNextWorkRequired(const CBlockIndex *pindexLast, int64_t nFirstBlockTime, const Consensus::Params &)</div><div class="ttdef"><b>Definition:</b> <a href="pow_8cpp_source.html#l00204">pow.cpp:204</a></div></div>
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<div class="ttc" id="params_8h_html"><div class="ttname"><a href="params_8h.html">params.h</a></div></div>
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<div class="ttc" id="pow_8h_html_a334aa8015cc7185f7fdf484783e40f38"><div class="ttname"><a href="pow_8h.html#a334aa8015cc7185f7fdf484783e40f38">GetBlockProof</a></div><div class="ttdeci">arith_uint256 GetBlockProof(const CBlockIndex &block)</div><div class="ttdef"><b>Definition:</b> <a href="pow_8cpp_source.html#l00257">pow.cpp:257</a></div></div>
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<div class="ttc" id="pow_8h_html_a8d60d8d6ddca0963bb51f6436aaee3fd"><div class="ttname"><a href="pow_8h.html#a8d60d8d6ddca0963bb51f6436aaee3fd">CheckProofOfWork</a></div><div class="ttdeci">bool CheckProofOfWork(uint256 hash, unsigned int nBits, const Consensus::Params &)</div><div class="ttdef"><b>Definition:</b> <a href="pow_8cpp_source.html#l00238">pow.cpp:238</a></div></div>
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<div class="ttc" id="classarith__uint256_html"><div class="ttname"><a href="classarith__uint256.html">arith_uint256</a></div><div class="ttdef"><b>Definition:</b> <a href="arith__uint256_8h_source.html#l00253">arith_uint256.h:253</a></div></div>
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<div class="ttc" id="classuint256_html"><div class="ttname"><a href="classuint256.html">uint256</a></div><div class="ttdef"><b>Definition:</b> <a href="uint256_8h_source.html#l00114">uint256.h:114</a></div></div>
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<div class="ttc" id="classCBlockHeader_html"><div class="ttname"><a href="classCBlockHeader.html">CBlockHeader</a></div><div class="ttdef"><b>Definition:</b> <a href="block_8h_source.html#l00020">block.h:20</a></div></div>
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<div class="ttc" id="pow_8h_html_a6f922f61b23b0fc46182f8ab457af736"><div class="ttname"><a href="pow_8h.html#a6f922f61b23b0fc46182f8ab457af736">GetBlockProofEquivalentTime</a></div><div class="ttdeci">int64_t GetBlockProofEquivalentTime(const CBlockIndex &to, const CBlockIndex &from, const CBlockIndex &tip, const Consensus::Params &)</div><div class="ttdef"><b>Definition:</b> <a href="pow_8cpp_source.html#l00272">pow.cpp:272</a></div></div>
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<div class="ttc" id="pow_8h_html_a8f131530ac35e565b56cfc1e857e5f02a989bf0976493af2171e71c38be869c98"><div class="ttname"><a href="pow_8h.html#a8f131530ac35e565b56cfc1e857e5f02a989bf0976493af2171e71c38be869c98">DIFF_KGW</a></div><div class="ttdef"><b>Definition:</b> <a href="pow_8h_source.html#l00022">pow.h:22</a></div></div>
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<div class="ttc" id="classCBlockIndex_html"><div class="ttname"><a href="classCBlockIndex.html">CBlockIndex</a></div><div class="ttdef"><b>Definition:</b> <a href="chain_8h_source.html#l00100">chain.h:100</a></div></div>
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