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<div class="title">xxhash.h</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> xxHash - Extremely Fast Hash algorithm</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> Header File</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> Copyright (C) 2012-2014, Yann Collet.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> modification, are permitted provided that the following conditions are</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> met:</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> * Redistributions of source code must retain the above copyright</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> notice, this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> * Redistributions in binary form must reproduce the above</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> copyright notice, this list of conditions and the following disclaimer</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> in the documentation and/or other materials provided with the</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> distribution.</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment"> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="comment"> &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="comment"> LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="comment"> A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="comment"> OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="comment"> SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="comment"> LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="comment"> DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="comment"> THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="comment"> (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="comment"> OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="comment"> You can contact the author at :</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="comment"> - xxHash source repository : http://code.google.com/p/xxhash/</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="comment">/* Notice extracted from xxHash homepage :</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="comment">xxHash is an extremely fast Hash algorithm, running at RAM speed limits.</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;<span class="comment">It also successfully passes all tests from the SMHasher suite.</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;<span class="comment">Comparison (single thread, Windows Seven 32 bits, using SMHasher on a Core 2 Duo @3GHz)</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="comment">Name Speed Q.Score Author</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;<span class="comment">xxHash 5.4 GB/s 10</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="comment">CrapWow 3.2 GB/s 2 Andrew</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;<span class="comment">MumurHash 3a 2.7 GB/s 10 Austin Appleby</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;<span class="comment">SpookyHash 2.0 GB/s 10 Bob Jenkins</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;<span class="comment">SBox 1.4 GB/s 9 Bret Mulvey</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;<span class="comment">Lookup3 1.2 GB/s 9 Bob Jenkins</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;<span class="comment">SuperFastHash 1.2 GB/s 1 Paul Hsieh</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;<span class="comment">CityHash64 1.05 GB/s 10 Pike &amp; Alakuijala</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;<span class="comment">FNV 0.55 GB/s 5 Fowler, Noll, Vo</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;<span class="comment">CRC32 0.43 GB/s 9</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;<span class="comment">MD5-32 0.33 GB/s 10 Ronald L. Rivest</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;<span class="comment">SHA1-32 0.28 GB/s 10</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="comment">Q.Score is a measure of quality of the hash function.</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<span class="comment">It depends on successfully passing SMHasher test set.</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;<span class="comment">10 is a perfect score.</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; </div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;<span class="preprocessor">#ifndef BEAST_HASH_XXHASH_H_INCLUDED</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;<span class="preprocessor">#define BEAST_HASH_XXHASH_H_INCLUDED</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="comment">/*****************************</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;<span class="comment"> Includes</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;<span class="comment">*****************************/</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;<span class="preprocessor">#include &lt;stddef.h&gt;</span> <span class="comment">/* size_t */</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacebeast.html">beast</a> {</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;<span class="keyword">namespace </span>detail {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;<span class="comment">/*****************************</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;<span class="comment"> Type</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="comment">*****************************/</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="keyword">typedef</span> <span class="keyword">enum</span> { <a class="code" href="namespacebeast_1_1detail.html#a23d8bec4f2b07e28987d348b3b5c896caa642c7046ece6b5bfd60b8bd51d20cc0">XXH_OK</a>=0, <a class="code" href="namespacebeast_1_1detail.html#a23d8bec4f2b07e28987d348b3b5c896ca14990ac4535ed1a6522cc44a93b279dd">XXH_ERROR</a> } <a class="code" href="namespacebeast_1_1detail.html#a23d8bec4f2b07e28987d348b3b5c896c">XXH_errorcode</a>;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; </div>
<div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="namespacebeast_1_1detail.html#a23d8bec4f2b07e28987d348b3b5c896c"> 78</a></span>&#160;<span class="comment">/*****************************</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;<span class="comment"> Simple Hash Functions</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;<span class="comment">*****************************/</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; </div>
<div class="line"><a name="l00082"></a><span class="lineno"><a class="line" href="namespacebeast_1_1detail.html#a23d8bec4f2b07e28987d348b3b5c896caa642c7046ece6b5bfd60b8bd51d20cc0"> 82</a></span>&#160;<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="namespacebeast_1_1detail.html#a25f3c6d6c7ff9f497a76eb01ead658c2">XXH32</a> (<span class="keyword">const</span> <span class="keywordtype">void</span>* input, <span class="keywordtype">size_t</span> length, <span class="keywordtype">unsigned</span> seed);</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span> <a class="code" href="namespacebeast_1_1detail.html#a15cc8b5feb86235839a3c31e01ffc82b">XXH64</a> (<span class="keyword">const</span> <span class="keywordtype">void</span>* input, <span class="keywordtype">size_t</span> length, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span> seed);</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; </div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;<span class="comment">XXH32() :</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;<span class="comment"> Calculate the 32-bits hash of sequence &quot;length&quot; bytes stored at memory address &quot;input&quot;.</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;<span class="comment"> The memory between input &amp; input+length must be valid (allocated and read-accessible).</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;<span class="comment"> &quot;seed&quot; can be used to alter the result predictably.</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;<span class="comment"> This function successfully passes all SMHasher tests.</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;<span class="comment"> Speed on Core 2 Duo @ 3 GHz (single thread, SMHasher benchmark) : 5.4 GB/s</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;<span class="comment">XXH64() :</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;<span class="comment"> Calculate the 64-bits hash of sequence of length &quot;len&quot; stored at memory address &quot;input&quot;.</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; </div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; </div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;<span class="comment">/*****************************</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;<span class="comment"> Advanced Hash Functions</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;<span class="comment">*****************************/</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;<span class="keyword">typedef</span> <span class="keyword">struct </span>{ <span class="keywordtype">long</span> <span class="keywordtype">long</span> ll[ 6]; } XXH32_state_t;</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;<span class="keyword">typedef</span> <span class="keyword">struct </span>{ <span class="keywordtype">long</span> <span class="keywordtype">long</span> ll[11]; } XXH64_state_t;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"><a class="line" href="structbeast_1_1detail_1_1XXH32__state__t.html"> 105</a></span>&#160;<span class="comment">These structures allow static allocation of XXH states.</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"><a class="line" href="structbeast_1_1detail_1_1XXH64__state__t.html#a2dfbdcd6ad7db95a6299f907534574aa"> 106</a></span>&#160;<span class="comment">States must then be initialized using XXHnn_reset() before first use.</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"><a class="line" href="structbeast_1_1detail_1_1XXH32__state__t.html#a6baf923252c4af55daf8fd9ab88b8b6d"> 107</a></span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;<span class="comment">If you prefer dynamic allocation, please refer to functions below.</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;<a class="code" href="structbeast_1_1detail_1_1XXH32__state__t.html">XXH32_state_t</a>* <a class="code" href="namespacebeast_1_1detail.html#ab966aa3c3db5c80c832f2c41c32e4881">XXH32_createState</a>(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;<a class="code" href="namespacebeast_1_1detail.html#a23d8bec4f2b07e28987d348b3b5c896c">XXH_errorcode</a> <a class="code" href="namespacebeast_1_1detail.html#a705223f490a47a158cb84beec6a31ca4">XXH32_freeState</a>(<a class="code" href="structbeast_1_1detail_1_1XXH32__state__t.html">XXH32_state_t</a>* statePtr);</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;<a class="code" href="structbeast_1_1detail_1_1XXH64__state__t.html">XXH64_state_t</a>* <a class="code" href="namespacebeast_1_1detail.html#adf6aee195936f6582ee7b2adb4f60258">XXH64_createState</a>(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;<a class="code" href="namespacebeast_1_1detail.html#a23d8bec4f2b07e28987d348b3b5c896c">XXH_errorcode</a> <a class="code" href="namespacebeast_1_1detail.html#a10af2adec8a6e31f6ea0be01248003a3">XXH64_freeState</a>(<a class="code" href="structbeast_1_1detail_1_1XXH64__state__t.html">XXH64_state_t</a>* statePtr);</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; </div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;<span class="comment">These functions create and release memory for XXH state.</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;<span class="comment">States must then be initialized using XXHnn_reset() before first use.</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; </div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;<a class="code" href="namespacebeast_1_1detail.html#a23d8bec4f2b07e28987d348b3b5c896c">XXH_errorcode</a> <a class="code" href="namespacebeast_1_1detail.html#a15410a221c71f6be28b90e83a14fd448">XXH32_reset</a> (<a class="code" href="structbeast_1_1detail_1_1XXH32__state__t.html">XXH32_state_t</a>* statePtr, <span class="keywordtype">unsigned</span> seed);</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;<a class="code" href="namespacebeast_1_1detail.html#a23d8bec4f2b07e28987d348b3b5c896c">XXH_errorcode</a> <a class="code" href="namespacebeast_1_1detail.html#a5b73efa3b39cfd02702e9f1a50269b99">XXH32_update</a> (<a class="code" href="structbeast_1_1detail_1_1XXH32__state__t.html">XXH32_state_t</a>* statePtr, <span class="keyword">const</span> <span class="keywordtype">void</span>* input, <span class="keywordtype">size_t</span> length);</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="namespacebeast_1_1detail.html#a180b5a4fa71deccd2842caf78dc2ae02">XXH32_digest</a> (<span class="keyword">const</span> <a class="code" href="structbeast_1_1detail_1_1XXH32__state__t.html">XXH32_state_t</a>* statePtr);</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160;<a class="code" href="namespacebeast_1_1detail.html#a23d8bec4f2b07e28987d348b3b5c896c">XXH_errorcode</a> <a class="code" href="namespacebeast_1_1detail.html#af9351de7641e84e52fcaa1c59ee2b7d6">XXH64_reset</a> (<a class="code" href="structbeast_1_1detail_1_1XXH64__state__t.html">XXH64_state_t</a>* statePtr, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span> seed);</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;<a class="code" href="namespacebeast_1_1detail.html#a23d8bec4f2b07e28987d348b3b5c896c">XXH_errorcode</a> <a class="code" href="namespacebeast_1_1detail.html#a1889d409556a3a9206ab77fdf7cb4bad">XXH64_update</a> (<a class="code" href="structbeast_1_1detail_1_1XXH64__state__t.html">XXH64_state_t</a>* statePtr, <span class="keyword">const</span> <span class="keywordtype">void</span>* input, <span class="keywordtype">size_t</span> length);</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span> <a class="code" href="namespacebeast_1_1detail.html#a66c3f34661239aea8df7e193fa67880e">XXH64_digest</a> (<span class="keyword">const</span> <a class="code" href="structbeast_1_1detail_1_1XXH64__state__t.html">XXH64_state_t</a>* statePtr);</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; </div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;<span class="comment">These functions calculate the xxHash of an input provided in multiple smaller packets,</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;<span class="comment">as opposed to an input provided as a single block.</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;<span class="comment">XXH state space must first be allocated, using either static or dynamic method provided above.</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160;<span class="comment">Start a new hash by initializing state with a seed, using XXHnn_reset().</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160;<span class="comment">Then, feed the hash state by calling XXHnn_update() as many times as necessary.</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;<span class="comment">Obviously, input must be valid, meaning allocated and read accessible.</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;<span class="comment">The function returns an error code, with 0 meaning OK, and any other value meaning there is an error.</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;<span class="comment">Finally, you can produce a hash anytime, by using XXHnn_digest().</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;<span class="comment">This function returns the final nn-bits hash.</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160;<span class="comment">You can nonetheless continue feeding the hash state with more input,</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;<span class="comment">and therefore get some new hashes, by calling again XXHnn_digest().</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160;<span class="comment">When you are done, don&#39;t forget to free XXH state space, using typically XXHnn_freeState().</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; </div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;} <span class="comment">// detail</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;} <span class="comment">// beast</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; </div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<span class="preprocessor">#endif</span></div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="anamespacebeast_1_1detail_html_a705223f490a47a158cb84beec6a31ca4"><div class="ttname"><a href="namespacebeast_1_1detail.html#a705223f490a47a158cb84beec6a31ca4">beast::detail::XXH32_freeState</a></div><div class="ttdeci">XXH_errorcode XXH32_freeState(XXH32_state_t *statePtr)</div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8cpp_source.html#l00538">xxhash.cpp:538</a></div></div>
<div class="ttc" id="anamespacebeast_1_1detail_html_a23d8bec4f2b07e28987d348b3b5c896c"><div class="ttname"><a href="namespacebeast_1_1detail.html#a23d8bec4f2b07e28987d348b3b5c896c">beast::detail::XXH_errorcode</a></div><div class="ttdeci">XXH_errorcode</div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8h_source.html#l00078">xxhash.h:78</a></div></div>
<div class="ttc" id="anamespacebeast_1_1detail_html_a1889d409556a3a9206ab77fdf7cb4bad"><div class="ttname"><a href="namespacebeast_1_1detail.html#a1889d409556a3a9206ab77fdf7cb4bad">beast::detail::XXH64_update</a></div><div class="ttdeci">XXH_errorcode XXH64_update(XXH64_state_t *state_in, const void *input, size_t len)</div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8cpp_source.html#l00828">xxhash.cpp:828</a></div></div>
<div class="ttc" id="anamespacebeast_1_1detail_html_a180b5a4fa71deccd2842caf78dc2ae02"><div class="ttname"><a href="namespacebeast_1_1detail.html#a180b5a4fa71deccd2842caf78dc2ae02">beast::detail::XXH32_digest</a></div><div class="ttdeci">U32 XXH32_digest(const XXH32_state_t *state_in)</div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8cpp_source.html#l00728">xxhash.cpp:728</a></div></div>
<div class="ttc" id="anamespacebeast_1_1detail_html_af9351de7641e84e52fcaa1c59ee2b7d6"><div class="ttname"><a href="namespacebeast_1_1detail.html#af9351de7641e84e52fcaa1c59ee2b7d6">beast::detail::XXH64_reset</a></div><div class="ttdeci">XXH_errorcode XXH64_reset(XXH64_state_t *state_in, unsigned long long seed)</div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8cpp_source.html#l00571">xxhash.cpp:571</a></div></div>
<div class="ttc" id="anamespacebeast_1_1detail_html_a23d8bec4f2b07e28987d348b3b5c896caa642c7046ece6b5bfd60b8bd51d20cc0"><div class="ttname"><a href="namespacebeast_1_1detail.html#a23d8bec4f2b07e28987d348b3b5c896caa642c7046ece6b5bfd60b8bd51d20cc0">beast::detail::XXH_OK</a></div><div class="ttdeci">@ XXH_OK</div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8h_source.html#l00082">xxhash.h:82</a></div></div>
<div class="ttc" id="anamespacebeast_1_1detail_html_a66c3f34661239aea8df7e193fa67880e"><div class="ttname"><a href="namespacebeast_1_1detail.html#a66c3f34661239aea8df7e193fa67880e">beast::detail::XXH64_digest</a></div><div class="ttdeci">unsigned long long XXH64_digest(const XXH64_state_t *state_in)</div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8cpp_source.html#l00922">xxhash.cpp:922</a></div></div>
<div class="ttc" id="anamespacebeast_1_1detail_html_a10af2adec8a6e31f6ea0be01248003a3"><div class="ttname"><a href="namespacebeast_1_1detail.html#a10af2adec8a6e31f6ea0be01248003a3">beast::detail::XXH64_freeState</a></div><div class="ttdeci">XXH_errorcode XXH64_freeState(XXH64_state_t *statePtr)</div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8cpp_source.html#l00549">xxhash.cpp:549</a></div></div>
<div class="ttc" id="anamespacebeast_1_1detail_html_a5b73efa3b39cfd02702e9f1a50269b99"><div class="ttname"><a href="namespacebeast_1_1detail.html#a5b73efa3b39cfd02702e9f1a50269b99">beast::detail::XXH32_update</a></div><div class="ttdeci">XXH_errorcode XXH32_update(XXH32_state_t *state_in, const void *input, size_t len)</div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8cpp_source.html#l00674">xxhash.cpp:674</a></div></div>
<div class="ttc" id="anamespacebeast_1_1detail_html_a23d8bec4f2b07e28987d348b3b5c896ca14990ac4535ed1a6522cc44a93b279dd"><div class="ttname"><a href="namespacebeast_1_1detail.html#a23d8bec4f2b07e28987d348b3b5c896ca14990ac4535ed1a6522cc44a93b279dd">beast::detail::XXH_ERROR</a></div><div class="ttdeci">@ XXH_ERROR</div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8h_source.html#l00082">xxhash.h:82</a></div></div>
<div class="ttc" id="anamespacebeast_1_1detail_html_a15410a221c71f6be28b90e83a14fd448"><div class="ttname"><a href="namespacebeast_1_1detail.html#a15410a221c71f6be28b90e83a14fd448">beast::detail::XXH32_reset</a></div><div class="ttdeci">XXH_errorcode XXH32_reset(XXH32_state_t *state_in, U32 seed)</div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8cpp_source.html#l00558">xxhash.cpp:558</a></div></div>
<div class="ttc" id="astructbeast_1_1detail_1_1XXH32__state__t_html"><div class="ttname"><a href="structbeast_1_1detail_1_1XXH32__state__t.html">beast::detail::XXH32_state_t</a></div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8h_source.html#l00105">xxhash.h:105</a></div></div>
<div class="ttc" id="anamespacebeast_1_1detail_html_a25f3c6d6c7ff9f497a76eb01ead658c2"><div class="ttname"><a href="namespacebeast_1_1detail.html#a25f3c6d6c7ff9f497a76eb01ead658c2">beast::detail::XXH32</a></div><div class="ttdeci">unsigned int XXH32(const void *input, size_t len, unsigned seed)</div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8cpp_source.html#l00335">xxhash.cpp:335</a></div></div>
<div class="ttc" id="anamespacebeast_1_1detail_html_adf6aee195936f6582ee7b2adb4f60258"><div class="ttname"><a href="namespacebeast_1_1detail.html#adf6aee195936f6582ee7b2adb4f60258">beast::detail::XXH64_createState</a></div><div class="ttdeci">XXH64_state_t * XXH64_createState(void)</div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8cpp_source.html#l00544">xxhash.cpp:544</a></div></div>
<div class="ttc" id="anamespacebeast_1_1detail_html_ab966aa3c3db5c80c832f2c41c32e4881"><div class="ttname"><a href="namespacebeast_1_1detail.html#ab966aa3c3db5c80c832f2c41c32e4881">beast::detail::XXH32_createState</a></div><div class="ttdeci">XXH32_state_t * XXH32_createState(void)</div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8cpp_source.html#l00533">xxhash.cpp:533</a></div></div>
<div class="ttc" id="anamespacebeast_1_1detail_html_a15cc8b5feb86235839a3c31e01ffc82b"><div class="ttname"><a href="namespacebeast_1_1detail.html#a15cc8b5feb86235839a3c31e01ffc82b">beast::detail::XXH64</a></div><div class="ttdeci">unsigned long long XXH64(const void *input, size_t len, unsigned long long seed)</div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8cpp_source.html#l00475">xxhash.cpp:475</a></div></div>
<div class="ttc" id="astructbeast_1_1detail_1_1XXH64__state__t_html"><div class="ttname"><a href="structbeast_1_1detail_1_1XXH64__state__t.html">beast::detail::XXH64_state_t</a></div><div class="ttdef"><b>Definition:</b> <a href="xxhash_8h_source.html#l00106">xxhash.h:106</a></div></div>
<div class="ttc" id="anamespacebeast_html"><div class="ttname"><a href="namespacebeast.html">beast</a></div><div class="ttdef"><b>Definition:</b> <a href="base__uint_8h_source.html#l00582">base_uint.h:582</a></div></div>
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