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| <li class="navelem"><a class="el" href="dir_8cab8f464681f7cc51cee77e79a434cd.html">3rdparty</a></li><li class="navelem"><a class="el" href="dir_82e31a22178767beedddc7597fd1ecb6.html">dmlc-core</a></li><li class="navelem"><a class="el" href="dir_7dd5b88db83ff474628c03c453739a90.html">include</a></li><li class="navelem"><a class="el" href="dir_e30967e3ab51f65ad4b50dd298ccf4e7.html">dmlc</a></li> </ul> |
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| <div class="title">endian.h</div> </div> |
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| <a href="endian_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> </div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#ifndef DMLC_ENDIAN_H_</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#define DMLC_ENDIAN_H_</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include "<a class="code" href="3rdparty_2dmlc-core_2include_2dmlc_2base_8h.html">./base.h</a>"</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#ifdef DMLC_CMAKE_LITTLE_ENDIAN</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>  <span class="comment">// If compiled with CMake, use CMake's endian detection logic</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor"> #define DMLC_LITTLE_ENDIAN DMLC_CMAKE_LITTLE_ENDIAN</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#else</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor"> #if defined(__APPLE__) || defined(_WIN32)</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor"> #define DMLC_LITTLE_ENDIAN 1</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor"> #elif defined(__GLIBC__) || defined(__GNU_LIBRARY__) \</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor"> || defined(__ANDROID__) || defined(__RISCV__)</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor"> #include <<a class="code" href="endian_8h.html">endian.h</a>></span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor"> #define DMLC_LITTLE_ENDIAN (__BYTE_ORDER == __LITTLE_ENDIAN)</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor"> #elif defined(__FreeBSD__) || defined(__OpenBSD__)</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor"> #include <sys/endian.h></span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor"> #define DMLC_LITTLE_ENDIAN (_BYTE_ORDER == _LITTLE_ENDIAN)</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor"> #elif defined(__EMSCRIPTEN__) || defined(__hexagon__)</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor"> #define DMLC_LITTLE_ENDIAN 1</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor"> #elif defined(__sun) || defined(sun)</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor"> #include <sys/isa_defs.h></span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor"> #if defined(_LITTLE_ENDIAN)</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor"> #define DMLC_LITTLE_ENDIAN 1</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor"> #else</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor"> #define DMLC_LITTLE_ENDIAN 0</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor"> #endif</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor"> #else</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor"> #error "Unable to determine endianness of your machine; use CMake to compile"</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor"> #endif</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="endian_8h.html#a2eb3fee8952ee827ffc0c2b4618ad5d5"> 39</a></span> <span class="preprocessor">#define DMLC_IO_NO_ENDIAN_SWAP (DMLC_LITTLE_ENDIAN == DMLC_IO_USE_LITTLE_ENDIAN)</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">namespace </span><a class="code" href="namespacedmlc.html">dmlc</a> {</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div><div class="line"><a name="l00051"></a><span class="lineno"><a class="line" href="namespacedmlc.html#adbe9d2411f71ee9f165b44bd0a6fbad1"> 51</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespacedmlc.html#adbe9d2411f71ee9f165b44bd0a6fbad1">ByteSwap</a>(<span class="keywordtype">void</span>* data, <span class="keywordtype">size_t</span> elem_bytes, <span class="keywordtype">size_t</span> num_elems) {</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < num_elems; ++i) {</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  uint8_t* bptr = <span class="keyword">reinterpret_cast<</span>uint8_t*<span class="keyword">></span>(data) + elem_bytes * i;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> j = 0; j < elem_bytes / 2; ++j) {</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  uint8_t v = bptr[elem_bytes - 1 - j];</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  bptr[elem_bytes - 1 - j] = bptr[j];</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  bptr[j] = v;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  }</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  }</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> }</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> } <span class="comment">// namespace dmlc</span></div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="preprocessor">#endif // DMLC_ENDIAN_H_</span></div><div class="ttc" id="endian_8h_html"><div class="ttname"><a href="endian_8h.html">endian.h</a></div><div class="ttdoc">Endian testing, need c++11. </div></div> |
| <div class="ttc" id="namespacedmlc_html"><div class="ttname"><a href="namespacedmlc.html">dmlc</a></div><div class="ttdoc">namespace for dmlc </div><div class="ttdef"><b>Definition:</b> array_view.h:12</div></div> |
| <div class="ttc" id="namespacedmlc_html_adbe9d2411f71ee9f165b44bd0a6fbad1"><div class="ttname"><a href="namespacedmlc.html#adbe9d2411f71ee9f165b44bd0a6fbad1">dmlc::ByteSwap</a></div><div class="ttdeci">void ByteSwap(void *data, size_t elem_bytes, size_t num_elems)</div><div class="ttdoc">A generic inplace byte swapping function. </div><div class="ttdef"><b>Definition:</b> endian.h:51</div></div> |
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