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<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_fca3c47b2ea228727bd6729832f89576.html">stdex</a></li> </ul>
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<div class="headertitle"><div class="title">endian.hpp</div></div>
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</div><!--header-->
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<div class="contents">
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<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"> SPDX-License-Identifier: MIT</span></div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> Copyright © 2023-2024 Amebis</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> </div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="preprocessor">#pragma once</span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span> </div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#include "assert.hpp"</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include "compat.hpp"</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="preprocessor">#include "system.hpp"</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include <stdint.h></span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span> </div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#ifndef LITTLE_ENDIAN</span></div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#define LITTLE_ENDIAN 1234</span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#ifndef BIG_ENDIAN</span></div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#define BIG_ENDIAN 4321</span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#ifndef BYTE_ORDER</span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#if defined(_WIN32)</span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#if REG_DWORD == REG_DWORD_LITTLE_ENDIAN</span></div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#define BYTE_ORDER LITTLE_ENDIAN</span></div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#elif REG_DWORD == REG_DWORD_BIG_ENDIAN</span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#define BYTE_ORDER BIG_ENDIAN</span></div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#elif defined(__APPLE__)</span></div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="preprocessor">#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__</span></div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="preprocessor">#define BYTE_ORDER LITTLE_ENDIAN</span></div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="preprocessor">#elif __BYTE_ORDER == __ORDER_BIG_ENDIAN__</span></div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#define BYTE_ORDER BIG_ENDIAN</span></div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="preprocessor">#else</span></div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="preprocessor">#include <endian.h></span></div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="preprocessor">#if __BYTE_ORDER == __LITTLE_ENDIAN</span></div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="preprocessor">#define BYTE_ORDER LITTLE_ENDIAN</span></div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="preprocessor">#elif __BYTE_ORDER == __BIG_ENDIAN</span></div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="preprocessor">#define BYTE_ORDER BIG_ENDIAN</span></div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="preprocessor">#ifndef BYTE_ORDER</span></div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="preprocessor">#error Unknown endian</span></div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span><span class="preprocessor">#endif</span></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="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span><span class="keyword">namespace </span>stdex</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span>{</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="keyword">inline</span> <span class="keyword">constexpr</span> uint8_t byteswap(_In_ <span class="keyword">const</span> uint8_t value)</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> {</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="keywordflow">return</span> value;</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> }</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> </div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="keyword">inline</span> uint16_t byteswap(_In_ <span class="keyword">const</span> uint16_t value)</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> {</div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="preprocessor">#if _MSC_VER >= 1300</span></div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="keywordflow">return</span> _byteswap_ushort(value);</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span><span class="preprocessor">#elif defined(_MSC_VER)</span></div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> uint16_t t = (value & 0x00ff) << 8;</div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> t |= (value) >> 8;</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keywordflow">return</span> t;</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span><span class="preprocessor">#else</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> __builtin_bswap16(value);</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span><span class="preprocessor">#endif</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> </div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <span class="keyword">inline</span> uint32_t byteswap(_In_ <span class="keyword">const</span> uint32_t value)</div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> {</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span><span class="preprocessor">#if _MSC_VER >= 1300</span></div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="keywordflow">return</span> _byteswap_ulong(value);</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span><span class="preprocessor">#elif defined(_MSC_VER)</span></div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> uint32_t t = (value & 0x000000ff) << 24;</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> t |= (value & 0x0000ff00) << 8;</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> t |= (value & 0x00ff0000) >> 8;</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> t |= (value) >> 24;</div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="keywordflow">return</span> t;</div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span><span class="preprocessor">#else</span></div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="keywordflow">return</span> __builtin_bswap32(value);</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> }</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> <span class="keyword">inline</span> uint64_t byteswap(_In_ <span class="keyword">const</span> uint64_t value)</div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> {</div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span><span class="preprocessor">#if _MSC_VER >= 1300</span></div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keywordflow">return</span> _byteswap_uint64(value);</div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span><span class="preprocessor">#elif defined(_MSC_VER)</span></div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> uint64_t t = (value & 0x00000000000000ff) << 56;</div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> t |= (value & 0x000000000000ff00) << 40;</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> t |= (value & 0x0000000000ff0000) << 24;</div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> t |= (value & 0x00000000ff000000) << 8;</div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> t |= (value & 0x000000ff00000000) >> 8;</div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> t |= (value & 0x0000ff0000000000) >> 24;</div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> t |= (value & 0x00ff000000000000) >> 40;</div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> t |= (value) >> 56;</div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <span class="keywordflow">return</span> t;</div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span><span class="preprocessor">#else</span></div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> <span class="keywordflow">return</span> __builtin_bswap64(value);</div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> }</div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> </div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">inline</span> <span class="keyword">constexpr</span> int8_t byteswap(_In_ <span class="keyword">const</span> <span class="keywordtype">char</span> value) { <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>int8_t<span class="keyword">></span>(byteswap(<span class="keyword">static_cast<</span>uint8_t<span class="keyword">></span>(value))); }</div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="keyword">inline</span> <span class="keyword">constexpr</span> int8_t byteswap(_In_ <span class="keyword">const</span> int8_t value) { <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>int8_t<span class="keyword">></span>(byteswap(<span class="keyword">static_cast<</span>uint8_t<span class="keyword">></span>(value))); }</div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="keyword">inline</span> int16_t byteswap(_In_ <span class="keyword">const</span> int16_t value) { <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>int16_t<span class="keyword">></span>(byteswap(<span class="keyword">static_cast<</span>uint16_t<span class="keyword">></span>(value))); }</div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keyword">inline</span> int32_t byteswap(_In_ <span class="keyword">const</span> int32_t value) { <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>int32_t<span class="keyword">></span>(byteswap(<span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(value))); }</div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="keyword">inline</span> int64_t byteswap(_In_ <span class="keyword">const</span> int64_t value) { <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>int64_t<span class="keyword">></span>(byteswap(<span class="keyword">static_cast<</span>uint64_t<span class="keyword">></span>(value))); }</div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> </div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <span class="keyword">inline</span> <span class="keywordtype">float</span> byteswap(_In_ <span class="keyword">const</span> <span class="keywordtype">float</span> value)</div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> {</div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> uint32_t r = byteswap(*<span class="keyword">reinterpret_cast<</span><span class="keyword">const </span>uint32_t*<span class="keyword">></span>(&value));</div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="keywordflow">return</span> *<span class="keyword">reinterpret_cast<</span><span class="keywordtype">float</span>*<span class="keyword">></span>(&r);</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> </div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> byteswap(_In_ <span class="keyword">const</span> <span class="keywordtype">double</span> value)</div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> {</div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> uint64_t r = byteswap(*<span class="keyword">reinterpret_cast<</span><span class="keyword">const </span>uint64_t*<span class="keyword">></span>(&value));</div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> <span class="keywordflow">return</span> *<span class="keyword">reinterpret_cast<</span><span class="keywordtype">double</span>*<span class="keyword">></span>(&r);</div>
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<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> }</div>
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<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> </div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> byteswap(_Inout_ uint8_t* value) { stdex_assert(value); *value = byteswap(*value); }</div>
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<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> byteswap(_Inout_ uint16_t* value) { stdex_assert(value); *value = byteswap(*value); }</div>
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<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> byteswap(_Inout_ uint32_t* value) { stdex_assert(value); *value = byteswap(*value); }</div>
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<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> byteswap(_Inout_ uint64_t* value) { stdex_assert(value); *value = byteswap(*value); }</div>
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<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> </div>
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<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> byteswap(_Inout_ <span class="keywordtype">char</span>* value) { byteswap(<span class="keyword">reinterpret_cast<</span>uint8_t*<span class="keyword">></span>(value)); }</div>
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<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> byteswap(_Inout_ int8_t* value) { byteswap(<span class="keyword">reinterpret_cast<</span>uint8_t*<span class="keyword">></span>(value)); }</div>
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> byteswap(_Inout_ int16_t* value) { byteswap(<span class="keyword">reinterpret_cast<</span>uint16_t*<span class="keyword">></span>(value)); }</div>
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<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> byteswap(_Inout_ int32_t* value) { byteswap(<span class="keyword">reinterpret_cast<</span>uint32_t*<span class="keyword">></span>(value)); }</div>
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<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> byteswap(_Inout_ int64_t* value) { byteswap(<span class="keyword">reinterpret_cast<</span>uint64_t*<span class="keyword">></span>(value)); }</div>
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<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> byteswap(_Inout_ <span class="keywordtype">float</span>* value) { byteswap(<span class="keyword">reinterpret_cast<</span>uint32_t*<span class="keyword">></span>(value)); }</div>
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<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> byteswap(_Inout_ <span class="keywordtype">double</span>* value) { byteswap(<span class="keyword">reinterpret_cast<</span>uint64_t*<span class="keyword">></span>(value)); }</div>
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<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span>}</div>
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<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> </div>
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<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span><span class="preprocessor">#if BYTE_ORDER == BIG_ENDIAN</span></div>
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<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span><span class="preprocessor">#define LE2HE(x) stdex::byteswap(x)</span></div>
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<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span><span class="preprocessor">#define BE2HE(x) (x)</span></div>
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<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span><span class="preprocessor">#define HE2LE(x) stdex::byteswap(x)</span></div>
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<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span><span class="preprocessor">#define HE2BE(x) (x)</span></div>
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<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span><span class="preprocessor">#else</span></div>
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<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span><span class="preprocessor">#define LE2HE(x) (x)</span></div>
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<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span><span class="preprocessor">#define BE2HE(x) stdex::byteswap(x)</span></div>
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<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span><span class="preprocessor">#define HE2LE(x) (x)</span></div>
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<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span><span class="preprocessor">#define HE2BE(x) stdex::byteswap(x)</span></div>
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<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span><span class="preprocessor">#endif</span></div>
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