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<div id="projectname">libaaruformat<span id="projectnumber"> 1.0</span>
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<div id="projectbrief">Aaru Data Preservation Suite - Format Library</div>
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<div class="headertitle"><div class="title">crc64.c</div></div>
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<a href="crc64_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> * This file is part of the Aaru Data Preservation Suite.</span></div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> * Copyright (c) 2019-2025 Natalia Portillo.</span></div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> *</span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> * This library is free software; you can redistribute it and/or modify</span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> * it under the terms of the GNU Lesser General Public License as</span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> * published by the Free Software Foundation; either version 2.1 of the</span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> * License, or (at your option) any later version.</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"> *</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment"> * This library is distributed in the hope that it will be useful, but</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment"> * Lesser General Public License for more details.</span></div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment"> *</span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment"> * You should have received a copy of the GNU Lesser General Public</span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"> * License along with this library; if not, see <http://www.gnu.org/licenses/>.</span></div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment"> */</span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include <stdlib.h></span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> </div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include <<a class="code" href="aaruformat_8h.html">aaruformat.h</a>></span></div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> </div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include "<a class="code" href="log_8h.html">log.h</a>"</span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span></div>
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<div class="foldopen" id="foldopen00032" data-start="{" data-end="}">
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"><a class="line" href="decls_8h.html#a66567ca64e31a687d4982cb254b45196"> 32</a></span><a class="code hl_define" href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a> <a class="code hl_struct" href="structcrc64__ctx.html">crc64_ctx</a> *<a class="code hl_define" href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a> <a class="code hl_function" href="crc64_8c.html#af16f2c48e857f46bedf48db0bf495bad">aaruf_crc64_init</a>(<span class="keywordtype">void</span>)</div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span>{</div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> <a class="code hl_define" href="log_8h.html#a21cc0459b78d5f2d7bd737e5aae1278a">TRACE</a>(<span class="stringliteral">"Entering aaruf_crc64_init()"</span>);</div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> <a class="code hl_struct" href="structcrc64__ctx.html">crc64_ctx</a> *ctx = malloc(<span class="keyword">sizeof</span>(<a class="code hl_struct" href="structcrc64__ctx.html">crc64_ctx</a>));</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> </div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> <span class="keywordflow">if</span>(!ctx) <span class="keywordflow">return</span> NULL;</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> </div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> ctx-><a class="code hl_variable" href="structcrc64__ctx.html#a54b4ffe58fb5840ef43487728a1349a8">crc</a> = <a class="code hl_define" href="crc64_8h.html#ad72070c1e0954a95d3d8d3eb49e4ca06">CRC64_ECMA_SEED</a>;</div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> </div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> <a class="code hl_define" href="log_8h.html#a21cc0459b78d5f2d7bd737e5aae1278a">TRACE</a>(<span class="stringliteral">"Exiting aaruf_crc64_init()"</span>);</div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <span class="keywordflow">return</span> ctx;</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span>}</div>
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</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span></div>
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<div class="foldopen" id="foldopen00055" data-start="{" data-end="}">
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"><a class="line" href="decls_8h.html#a1fb4423a841ccd728e3ad0d028cbc9b4"> 55</a></span><a class="code hl_define" href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a> <span class="keywordtype">int</span> <a class="code hl_define" href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a> <a class="code hl_function" href="crc64_8c.html#a1fb4423a841ccd728e3ad0d028cbc9b4">aaruf_crc64_update</a>(<a class="code hl_struct" href="structcrc64__ctx.html">crc64_ctx</a> *ctx, <span class="keyword">const</span> uint8_t *data, uint32_t len)</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span>{</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <a class="code hl_define" href="log_8h.html#a21cc0459b78d5f2d7bd737e5aae1278a">TRACE</a>(<span class="stringliteral">"Entering aaruf_crc64_update(%p, %p, %u)"</span>, ctx, data, len);</div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="keywordflow">if</span>(!ctx || !data)</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> {</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <a class="code hl_define" href="log_8h.html#a21cc0459b78d5f2d7bd737e5aae1278a">TRACE</a>(<span class="stringliteral">"Exiting aaruf_crc64_update() = -1"</span>);</div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keywordflow">return</span> -1;</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> }</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> </div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span><span class="preprocessor">#if defined(__x86_64__) || defined(__amd64) || defined(_M_AMD64) || defined(_M_X64) || defined(__I386__) || \</span></div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span><span class="preprocessor"> defined(__i386__) || defined(__THW_INTEL) || defined(_M_IX86)</span></div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keywordflow">if</span>(have_clmul())</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> {</div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> ctx-><a class="code hl_variable" href="structcrc64__ctx.html#a54b4ffe58fb5840ef43487728a1349a8">crc</a> = ~aaruf_crc64_clmul(~ctx-><a class="code hl_variable" href="structcrc64__ctx.html#a54b4ffe58fb5840ef43487728a1349a8">crc</a>, data, len);</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> </div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <a class="code hl_define" href="log_8h.html#a21cc0459b78d5f2d7bd737e5aae1278a">TRACE</a>(<span class="stringliteral">"Exiting aaruf_crc64_update() = 0"</span>);</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> }</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> </div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span><span class="preprocessor">#if defined(__aarch64__) || defined(_M_ARM64) || defined(__arm__) || defined(_M_ARM)</span></div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="keywordflow">if</span>(have_neon())</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> {</div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> ctx-><a class="code hl_variable" href="structcrc64__ctx.html#a54b4ffe58fb5840ef43487728a1349a8">crc</a> = ~aaruf_crc64_vmull(~ctx-><a class="code hl_variable" href="structcrc64__ctx.html#a54b4ffe58fb5840ef43487728a1349a8">crc</a>, data, len);</div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> </div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> <a class="code hl_define" href="log_8h.html#a21cc0459b78d5f2d7bd737e5aae1278a">TRACE</a>(<span class="stringliteral">"Exiting aaruf_crc64_update() = 0"</span>);</div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> }</div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> </div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <span class="comment">// Unroll according to Intel slicing by uint8_t</span></div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="comment">// http://www.intel.com/technology/comms/perfnet/download/CRC_generators.pdf</span></div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="comment">// http://sourceforge.net/projects/slicing-by-8/</span></div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> </div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <a class="code hl_function" href="crc64_8c.html#a83ecd1f5636915aebacfd29fc6306520">aaruf_crc64_slicing</a>(&ctx-><a class="code hl_variable" href="structcrc64__ctx.html#a54b4ffe58fb5840ef43487728a1349a8">crc</a>, data, len);</div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> </div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <a class="code hl_define" href="log_8h.html#a21cc0459b78d5f2d7bd737e5aae1278a">TRACE</a>(<span class="stringliteral">"Exiting aaruf_crc64_update() = 0"</span>);</div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keywordflow">return</span> 0;</div>
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||
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span>}</div>
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</div>
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||
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span></div>
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<div class="foldopen" id="foldopen00102" data-start="{" data-end="}">
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"><a class="line" href="decls_8h.html#a83ecd1f5636915aebacfd29fc6306520"> 102</a></span><a class="code hl_define" href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a> <span class="keywordtype">void</span> <a class="code hl_define" href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a> <a class="code hl_function" href="crc64_8c.html#a83ecd1f5636915aebacfd29fc6306520">aaruf_crc64_slicing</a>(uint64_t *previous_crc, <span class="keyword">const</span> uint8_t *data, uint32_t len)</div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span>{</div>
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||
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> uint64_t c = *previous_crc;</div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> </div>
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||
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <span class="keywordflow">if</span>(len > 4)</div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> {</div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="keyword">const</span> uint8_t *limit = NULL;</div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> </div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> <span class="keywordflow">while</span>((uintptr_t)data & 3)</div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> {</div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> c = <a class="code hl_variable" href="crc64_8h.html#ac74d5f4eb89e0a1366aed271f46b6302">crc64_table</a>[0][*data++ ^ c & 0xFF] ^ c >> 8;</div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> --len;</div>
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||
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> }</div>
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||
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<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> </div>
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||
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<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> limit = data + (len & ~(uint32_t)3);</div>
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||
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> len &= (uint32_t)3;</div>
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||
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<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> </div>
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||
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<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> <span class="keywordflow">while</span>(data < limit)</div>
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||
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|
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> {</div>
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||
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<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <span class="keyword">const</span> uint32_t tmp = c ^ *(<span class="keyword">const</span> uint32_t *)data;</div>
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||
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<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> data += 4;</div>
|
||
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|
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> </div>
|
||
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> c = <a class="code hl_variable" href="crc64_8h.html#ac74d5f4eb89e0a1366aed271f46b6302">crc64_table</a>[3][(tmp & 0xFF)] ^ <a class="code hl_variable" href="crc64_8h.html#ac74d5f4eb89e0a1366aed271f46b6302">crc64_table</a>[2][(tmp >> 8 & 0xFF)] ^ c >> 32 ^</div>
|
||
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|
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <a class="code hl_variable" href="crc64_8h.html#ac74d5f4eb89e0a1366aed271f46b6302">crc64_table</a>[1][(tmp >> 16 & 0xFF)] ^ <a class="code hl_variable" href="crc64_8h.html#ac74d5f4eb89e0a1366aed271f46b6302">crc64_table</a>[0][(tmp >> 24)];</div>
|
||
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|
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> }</div>
|
||
|
|
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> }</div>
|
||
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<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> </div>
|
||
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|
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <span class="keywordflow">while</span>(len-- != 0) c = <a class="code hl_variable" href="crc64_8h.html#ac74d5f4eb89e0a1366aed271f46b6302">crc64_table</a>[0][*data++ ^ c & 0xFF] ^ c >> 8;</div>
|
||
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|
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> </div>
|
||
|
|
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> *previous_crc = c;</div>
|
||
|
|
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span>}</div>
|
||
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</div>
|
||
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<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span></div>
|
||
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<div class="foldopen" id="foldopen00141" data-start="{" data-end="}">
|
||
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<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"><a class="line" href="decls_8h.html#ae48cfb59c6585e9ffd4cd1a97044891f"> 141</a></span><a class="code hl_define" href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a> <span class="keywordtype">int</span> <a class="code hl_define" href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a> <a class="code hl_function" href="crc64_8c.html#ae48cfb59c6585e9ffd4cd1a97044891f">aaruf_crc64_final</a>(<a class="code hl_struct" href="structcrc64__ctx.html">crc64_ctx</a> *ctx, uint64_t *crc)</div>
|
||
|
|
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span>{</div>
|
||
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|
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> <span class="keywordflow">if</span>(!ctx) <span class="keywordflow">return</span> -1;</div>
|
||
|
|
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> </div>
|
||
|
|
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> *crc = ctx-><a class="code hl_variable" href="structcrc64__ctx.html#a54b4ffe58fb5840ef43487728a1349a8">crc</a> ^ <a class="code hl_define" href="crc64_8h.html#ad72070c1e0954a95d3d8d3eb49e4ca06">CRC64_ECMA_SEED</a>;</div>
|
||
|
|
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> </div>
|
||
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|
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> <span class="keywordflow">return</span> 0;</div>
|
||
|
|
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span>}</div>
|
||
|
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</div>
|
||
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<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span></div>
|
||
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<div class="foldopen" id="foldopen00155" data-start="{" data-end="}">
|
||
|
|
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"><a class="line" href="decls_8h.html#a4943569a8623eb2e3e0adc276c433097"> 155</a></span><a class="code hl_define" href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a> <span class="keywordtype">void</span> <a class="code hl_define" href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a> <a class="code hl_function" href="crc64_8c.html#a4943569a8623eb2e3e0adc276c433097">aaruf_crc64_free</a>(<a class="code hl_struct" href="structcrc64__ctx.html">crc64_ctx</a> *ctx)</div>
|
||
|
|
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span>{</div>
|
||
|
|
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <span class="keywordflow">if</span>(ctx) free(ctx);</div>
|
||
|
|
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span>}</div>
|
||
|
|
</div>
|
||
|
|
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> </div>
|
||
|
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<div class="foldopen" id="foldopen00160" data-start="{" data-end="}">
|
||
|
|
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"><a class="line" href="decls_8h.html#a0fee4834bf0747bcd933c4e754aa4692"> 160</a></span><a class="code hl_define" href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a> uint64_t <a class="code hl_define" href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a> <a class="code hl_function" href="crc64_8c.html#adae8cec415b4af4b7a9e8a4a74d82828">aaruf_crc64_data</a>(<span class="keyword">const</span> uint8_t *data, <span class="keyword">const</span> uint32_t len)</div>
|
||
|
|
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span>{</div>
|
||
|
|
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> <a class="code hl_struct" href="structcrc64__ctx.html">crc64_ctx</a> *ctx = <a class="code hl_function" href="crc64_8c.html#af16f2c48e857f46bedf48db0bf495bad">aaruf_crc64_init</a>();</div>
|
||
|
|
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> uint64_t crc = 0;</div>
|
||
|
|
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> </div>
|
||
|
|
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> <span class="keywordflow">if</span>(!ctx) <span class="keywordflow">return</span> crc;</div>
|
||
|
|
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> </div>
|
||
|
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<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> <a class="code hl_function" href="crc64_8c.html#a1fb4423a841ccd728e3ad0d028cbc9b4">aaruf_crc64_update</a>(ctx, data, len);</div>
|
||
|
|
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> <a class="code hl_function" href="crc64_8c.html#ae48cfb59c6585e9ffd4cd1a97044891f">aaruf_crc64_final</a>(ctx, &crc);</div>
|
||
|
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<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> <a class="code hl_function" href="crc64_8c.html#a4943569a8623eb2e3e0adc276c433097">aaruf_crc64_free</a>(ctx);</div>
|
||
|
|
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> </div>
|
||
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<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> <span class="keywordflow">return</span> crc;</div>
|
||
|
|
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span>}</div>
|
||
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</div>
|
||
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<div class="ttc" id="aaaruformat_8h_html"><div class="ttname"><a href="aaruformat_8h.html">aaruformat.h</a></div></div>
|
||
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<div class="ttc" id="acrc64_8c_html_a1fb4423a841ccd728e3ad0d028cbc9b4"><div class="ttname"><a href="crc64_8c.html#a1fb4423a841ccd728e3ad0d028cbc9b4">aaruf_crc64_update</a></div><div class="ttdeci">int aaruf_crc64_update(crc64_ctx *ctx, const uint8_t *data, uint32_t len)</div><div class="ttdoc">Updates the CRC64 context with new data.</div><div class="ttdef"><b>Definition</b> <a href="#l00055">crc64.c:55</a></div></div>
|
||
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<div class="ttc" id="acrc64_8c_html_a4943569a8623eb2e3e0adc276c433097"><div class="ttname"><a href="crc64_8c.html#a4943569a8623eb2e3e0adc276c433097">aaruf_crc64_free</a></div><div class="ttdeci">void aaruf_crc64_free(crc64_ctx *ctx)</div><div class="ttdoc">Frees a CRC64 context.</div><div class="ttdef"><b>Definition</b> <a href="#l00155">crc64.c:155</a></div></div>
|
||
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<div class="ttc" id="acrc64_8c_html_a83ecd1f5636915aebacfd29fc6306520"><div class="ttname"><a href="crc64_8c.html#a83ecd1f5636915aebacfd29fc6306520">aaruf_crc64_slicing</a></div><div class="ttdeci">void aaruf_crc64_slicing(uint64_t *previous_crc, const uint8_t *data, uint32_t len)</div><div class="ttdoc">Updates a CRC64 value using the slicing-by-8 algorithm.</div><div class="ttdef"><b>Definition</b> <a href="#l00102">crc64.c:102</a></div></div>
|
||
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<div class="ttc" id="acrc64_8c_html_adae8cec415b4af4b7a9e8a4a74d82828"><div class="ttname"><a href="crc64_8c.html#adae8cec415b4af4b7a9e8a4a74d82828">aaruf_crc64_data</a></div><div class="ttdeci">uint64_t aaruf_crc64_data(const uint8_t *data, const uint32_t len)</div><div class="ttdef"><b>Definition</b> <a href="#l00160">crc64.c:160</a></div></div>
|
||
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<div class="ttc" id="acrc64_8c_html_ae48cfb59c6585e9ffd4cd1a97044891f"><div class="ttname"><a href="crc64_8c.html#ae48cfb59c6585e9ffd4cd1a97044891f">aaruf_crc64_final</a></div><div class="ttdeci">int aaruf_crc64_final(crc64_ctx *ctx, uint64_t *crc)</div><div class="ttdoc">Computes the final CRC64 value from the context.</div><div class="ttdef"><b>Definition</b> <a href="#l00141">crc64.c:141</a></div></div>
|
||
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<div class="ttc" id="acrc64_8c_html_af16f2c48e857f46bedf48db0bf495bad"><div class="ttname"><a href="crc64_8c.html#af16f2c48e857f46bedf48db0bf495bad">aaruf_crc64_init</a></div><div class="ttdeci">crc64_ctx * aaruf_crc64_init(void)</div><div class="ttdoc">Initializes a CRC64 context.</div><div class="ttdef"><b>Definition</b> <a href="#l00032">crc64.c:32</a></div></div>
|
||
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<div class="ttc" id="acrc64_8h_html_ac74d5f4eb89e0a1366aed271f46b6302"><div class="ttname"><a href="crc64_8h.html#ac74d5f4eb89e0a1366aed271f46b6302">crc64_table</a></div><div class="ttdeci">static const uint64_t crc64_table[4][256]</div><div class="ttdoc">Precomputed slicing-by-4 ECMA-182 CRC64 lookup tables (4 * 256 * 8 = 8192 bytes).</div><div class="ttdef"><b>Definition</b> <a href="crc64_8h_source.html#l00066">crc64.h:66</a></div></div>
|
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<div class="ttc" id="acrc64_8h_html_ad72070c1e0954a95d3d8d3eb49e4ca06"><div class="ttname"><a href="crc64_8h.html#ad72070c1e0954a95d3d8d3eb49e4ca06">CRC64_ECMA_SEED</a></div><div class="ttdeci">#define CRC64_ECMA_SEED</div><div class="ttdoc">ECMA-182 initial seed (all bits set).</div><div class="ttdef"><b>Definition</b> <a href="crc64_8h_source.html#l00280">crc64.h:280</a></div></div>
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||
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<div class="ttc" id="adecls_8h_html_a018e0da1c1f7e4f6187a982c0e40e056"><div class="ttname"><a href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a></div><div class="ttdeci">#define AARU_CALL</div><div class="ttdef"><b>Definition</b> <a href="decls_8h_source.html#l00045">decls.h:45</a></div></div>
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<div class="ttc" id="adecls_8h_html_a9001412c35f3c92d3a9320d27b0d97f9"><div class="ttname"><a href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a></div><div class="ttdeci">#define AARU_EXPORT</div><div class="ttdef"><b>Definition</b> <a href="decls_8h_source.html#l00054">decls.h:54</a></div></div>
|
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<div class="ttc" id="alog_8h_html"><div class="ttname"><a href="log_8h.html">log.h</a></div></div>
|
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<div class="ttc" id="alog_8h_html_a21cc0459b78d5f2d7bd737e5aae1278a"><div class="ttname"><a href="log_8h.html#a21cc0459b78d5f2d7bd737e5aae1278a">TRACE</a></div><div class="ttdeci">#define TRACE(fmt,...)</div><div class="ttdef"><b>Definition</b> <a href="log_8h_source.html#l00025">log.h:25</a></div></div>
|
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<div class="ttc" id="astructcrc64__ctx_html"><div class="ttname"><a href="structcrc64__ctx.html">crc64_ctx</a></div><div class="ttdoc">Minimal ECMA-182 CRC64 incremental state container (running value only).</div><div class="ttdef"><b>Definition</b> <a href="crc64_8h_source.html#l00055">crc64.h:56</a></div></div>
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<div class="ttc" id="astructcrc64__ctx_html_a54b4ffe58fb5840ef43487728a1349a8"><div class="ttname"><a href="structcrc64__ctx.html#a54b4ffe58fb5840ef43487728a1349a8">crc64_ctx::crc</a></div><div class="ttdeci">uint64_t crc</div><div class="ttdoc">Running CRC value (initialize to CRC64_ECMA_SEED before first update).</div><div class="ttdef"><b>Definition</b> <a href="crc64_8h_source.html#l00057">crc64.h:57</a></div></div>
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