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|  <span id="projectnumber">2.1.2</span> |
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| <div id="projectbrief">Lightweight IP stack</div> |
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| <div class="textblock"><code>#include "<a class="el" href="arch_8h.html">lwip/arch.h</a>"</code><br /> |
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| <tr class="memitem:afc29766fb0707c63b64568c5fa44a374"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="prot_2ip_8h.html#afc29766fb0707c63b64568c5fa44a374">IP_HDR_GET_VERSION</a>(ptr)   ((*(u8_t*)(ptr)) >> 4)</td></tr> |
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| <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> |
| <div class="textblock"><p>IP protocol definitions </p> |
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| <h2 class="memtitle"><span class="permalink"><a href="#afc29766fb0707c63b64568c5fa44a374">◆ </a></span>IP_HDR_GET_VERSION</h2> |
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| <td class="memname">#define IP_HDR_GET_VERSION</td> |
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| <td class="paramname">ptr</td><td>)</td> |
| <td>   ((*(u8_t*)(ptr)) >> 4)</td> |
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| <p>This operates on a void* by loading the first byte </p> |
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