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  112.   <div class="headertitle"><div class="title">HashCombine.h File Reference</div></div>
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  116. <p><a href="_hash_combine_8h_source.html">Go to the source code of this file.</a></p>
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  117. <table class="memberdecls">
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  118. <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="nested-classes" name="nested-classes"></a>
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  119. Classes</h2></td></tr>
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  120. <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_hash.html">Hash&lt; T &gt;</a></td></tr>
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  121. <tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Fallback hash function that calls T::GetHash()  <a href="struct_hash.html#details">More...</a><br /></td></tr>
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  122. <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
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  123. <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_hash_3_01float_01_4.html">Hash&lt; float &gt;</a></td></tr>
    124. 

  124. <tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">A hash function for floats.  <a href="struct_hash_3_01float_01_4.html#details">More...</a><br /></td></tr>
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  125. <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
    126. 

  126. <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_hash_3_01double_01_4.html">Hash&lt; double &gt;</a></td></tr>
    127. 

  127. <tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">A hash function for doubles.  <a href="struct_hash_3_01double_01_4.html#details">More...</a><br /></td></tr>
    128. 

  128. <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
    129. 

  129. <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_hash_3_01const_01char_01_5_01_4.html">Hash&lt; const char * &gt;</a></td></tr>
    130. 

  130. <tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">A hash function for character pointers.  <a href="struct_hash_3_01const_01char_01_5_01_4.html#details">More...</a><br /></td></tr>
    131. 

  131. <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
    132. 

  132. <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_hash_3_01std_1_1string__view_01_4.html">Hash&lt; std::string_view &gt;</a></td></tr>
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  133. <tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">A hash function for std::string_view.  <a href="struct_hash_3_01std_1_1string__view_01_4.html#details">More...</a><br /></td></tr>
    134. 

  134. <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
    135. 

  135. <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_hash_3_01_string_01_4.html">Hash&lt; String &gt;</a></td></tr>
    136. 

  136. <tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">A hash function for String.  <a href="struct_hash_3_01_string_01_4.html#details">More...</a><br /></td></tr>
    137. 

  137. <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
    138. 

  138. <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_hash_3_01_t_01_5_01_4.html">Hash&lt; T * &gt;</a></td></tr>
    139. 

  139. <tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">A fallback function for generic pointers.  <a href="struct_hash_3_01_t_01_5_01_4.html#details">More...</a><br /></td></tr>
    140. 

  140. <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
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  141. </table><table class="memberdecls">
    142. 

  142. <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="define-members" name="define-members"></a>
    143. 

  143. Macros</h2></td></tr>
    144. 

  144. <tr class="memitem:ae769863cf16f969cdea429484609d34e" id="r_ae769863cf16f969cdea429484609d34e"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ae769863cf16f969cdea429484609d34e">JPH_DEFINE_TRIVIAL_HASH</a>(type)</td></tr>
    145. 

  145. <tr class="memdesc:ae769863cf16f969cdea429484609d34e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Helper macro to define a hash function for trivial types.  <br /></td></tr>
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  146. <tr class="separator:ae769863cf16f969cdea429484609d34e"><td class="memSeparator" colspan="2">&#160;</td></tr>
    147. 

  147. <tr class="memitem:aedd0cd83dae14bf34f99338587ab043d" id="r_aedd0cd83dae14bf34f99338587ab043d"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#aedd0cd83dae14bf34f99338587ab043d">JPH_MAKE_HASH_STRUCT</a>(type,  name, ...)</td></tr>
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  148. <tr class="separator:aedd0cd83dae14bf34f99338587ab043d"><td class="memSeparator" colspan="2">&#160;</td></tr>
    149. 

  149. <tr class="memitem:a17475665ce4ff763a68a3fd9e82e826b" id="r_a17475665ce4ff763a68a3fd9e82e826b"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a17475665ce4ff763a68a3fd9e82e826b">JPH_MAKE_STD_HASH</a>(type)</td></tr>
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  150. <tr class="separator:a17475665ce4ff763a68a3fd9e82e826b"><td class="memSeparator" colspan="2">&#160;</td></tr>
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  151. <tr class="memitem:acb214eb23a4f6646330f74bc5f72c938" id="r_acb214eb23a4f6646330f74bc5f72c938"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#acb214eb23a4f6646330f74bc5f72c938">JPH_MAKE_HASHABLE</a>(type, ...)</td></tr>
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  152. <tr class="separator:acb214eb23a4f6646330f74bc5f72c938"><td class="memSeparator" colspan="2">&#160;</td></tr>
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  153. </table><table class="memberdecls">
    154. 

  154. <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
    155. 

  155. Functions</h2></td></tr>
    156. 

  156. <tr class="memitem:a396c677c4eb61f19e11cc202aac23c38" id="r_a396c677c4eb61f19e11cc202aac23c38"><td class="memItemLeft" align="right" valign="top"><a class="el" href="_core_8h.html#ad14098b68b8c44ea6112601031268405">JPH_NAMESPACE_BEGIN</a> <a class="el" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a396c677c4eb61f19e11cc202aac23c38">HashBytes</a> (const void *inData, <a class="el" href="_core_8h.html#a69aa29b598b851b0640aa225a9e5d61d">uint</a> inSize, <a class="el" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a> inSeed=0xcbf29ce484222325UL)</td></tr>
    157. 

  157. <tr class="separator:a396c677c4eb61f19e11cc202aac23c38"><td class="memSeparator" colspan="2">&#160;</td></tr>
    158. 

  158. <tr class="memitem:a117e2894f38fb560424040083a44de95" id="r_a117e2894f38fb560424040083a44de95"><td class="memItemLeft" align="right" valign="top">constexpr <a class="el" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a117e2894f38fb560424040083a44de95">HashString</a> (const char *inString, <a class="el" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a> inSeed=0xcbf29ce484222325UL)</td></tr>
    159. 

  159. <tr class="separator:a117e2894f38fb560424040083a44de95"><td class="memSeparator" colspan="2">&#160;</td></tr>
    160. 

  160. <tr class="memitem:a8ce241fe287672b4a559499d341d2ee7" id="r_a8ce241fe287672b4a559499d341d2ee7"><td class="memItemLeft" align="right" valign="top"><a class="el" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a8ce241fe287672b4a559499d341d2ee7">Hash64</a> (<a class="el" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a> inValue)</td></tr>
    161. 

  161. <tr class="separator:a8ce241fe287672b4a559499d341d2ee7"><td class="memSeparator" colspan="2">&#160;</td></tr>
    162. 

  162. <tr class="memitem:aca48702d50d6db86a2bfba77688707d3" id="r_aca48702d50d6db86a2bfba77688707d3"><td class="memTemplParams" colspan="2">template&lt;typename T &gt; </td></tr>
    163. 

  163. <tr class="memitem:aca48702d50d6db86a2bfba77688707d3"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#aca48702d50d6db86a2bfba77688707d3">HashCombine</a> (<a class="el" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a> &amp;ioSeed, const T &amp;inValue)</td></tr>
    164. 

  164. <tr class="memdesc:aca48702d50d6db86a2bfba77688707d3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Commonly used types.  <br /></td></tr>
    165. 

  165. <tr class="separator:aca48702d50d6db86a2bfba77688707d3"><td class="memSeparator" colspan="2">&#160;</td></tr>
    166. 

  166. <tr class="memitem:a54628f60d56870ba54746a7829d4e403" id="r_a54628f60d56870ba54746a7829d4e403"><td class="memTemplParams" colspan="2">template&lt;typename FirstValue , typename... Values&gt; </td></tr>
    167. 

  167. <tr class="memitem:a54628f60d56870ba54746a7829d4e403"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a>&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#a54628f60d56870ba54746a7829d4e403">HashCombineArgs</a> (const FirstValue &amp;inFirstValue, Values... inValues)</td></tr>
    168. 

  168. <tr class="separator:a54628f60d56870ba54746a7829d4e403"><td class="memSeparator" colspan="2">&#160;</td></tr>
    169. 

  169. </table>
    170. 

  170. <h2 class="groupheader">Macro Definition Documentation</h2>
    171. 

  171. <a id="ae769863cf16f969cdea429484609d34e" name="ae769863cf16f969cdea429484609d34e"></a>
    172. 

  172. <h2 class="memtitle"><span class="permalink"><a href="#ae769863cf16f969cdea429484609d34e">&#9670;&#160;</a></span>JPH_DEFINE_TRIVIAL_HASH</h2>
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  173. 

  174. <div class="memitem">
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  175. <div class="memproto">
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  176.       <table class="memname">
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  177.         <tr>
    178. 

  178.           <td class="memname">#define JPH_DEFINE_TRIVIAL_HASH</td>
    179. 

  179.           <td>(</td>
    180. 

  180.           <td class="paramtype"></td>          <td class="paramname"><span class="paramname"><em>type</em></span></td><td>)</td>
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  181.           <td></td>
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  184. </div><div class="memdoc">
    185. 

  185. <b>Value:</b><div class="fragment"><div class="line"><span class="keyword">template</span> &lt;&gt;                                                 \</div>
    186. 

  186. <div class="line"><span class="keyword">struct </span><a class="code hl_struct" href="struct_hash.html">Hash</a>&lt;type&gt;                                           \</div>
    187. 

  187. <div class="line">{                                                           \</div>
    188. 

  188. <div class="line">    <a class="code hl_typedef" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a>      <a class="code hl_function" href="struct_hash.html#a006c911ef82c10473d3773398654cbe1">operator () </a>(<span class="keyword">const</span> type &amp;inValue) <span class="keyword">const</span>     \</div>
    189. 

  189. <div class="line">    {                                                       \</div>
    190. 

  190. <div class="line">        <span class="keywordflow">return</span> <a class="code hl_function" href="#a396c677c4eb61f19e11cc202aac23c38">HashBytes</a>(&amp;inValue, <span class="keyword">sizeof</span>(inValue));        \</div>
    191. 

  191. <div class="line">    }                                                       \</div>
    192. 

  192. <div class="line">};</div>
    193. 

  193. <div class="ttc" id="a_core_8h_html_a60e8696a4678cd348e991a1f172e53f7"><div class="ttname"><a href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a></div><div class="ttdeci">std::uint64_t uint64</div><div class="ttdef"><b>Definition</b> Core.h:504</div></div>
    194. 

  194. <div class="ttc" id="a_hash_combine_8h_html_a396c677c4eb61f19e11cc202aac23c38"><div class="ttname"><a href="#a396c677c4eb61f19e11cc202aac23c38">HashBytes</a></div><div class="ttdeci">JPH_NAMESPACE_BEGIN uint64 HashBytes(const void *inData, uint inSize, uint64 inSeed=0xcbf29ce484222325UL)</div><div class="ttdef"><b>Definition</b> HashCombine.h:15</div></div>
    195. 

  195. <div class="ttc" id="astruct_hash_html"><div class="ttname"><a href="struct_hash.html">Hash</a></div><div class="ttdoc">Fallback hash function that calls T::GetHash()</div><div class="ttdef"><b>Definition</b> HashCombine.h:59</div></div>
    196. 

  196. <div class="ttc" id="astruct_hash_html_a006c911ef82c10473d3773398654cbe1"><div class="ttname"><a href="struct_hash.html#a006c911ef82c10473d3773398654cbe1">Hash::operator()</a></div><div class="ttdeci">uint64 operator()(const T &amp;inValue) const</div><div class="ttdef"><b>Definition</b> HashCombine.h:60</div></div>
    197. 

  197. </div><!-- fragment -->
    198. 

  198. <p>Helper macro to define a hash function for trivial types. </p>
    199. 

  199. 

  200. </div>
    201. 

  201. </div>
    202. 

  202. <a id="aedd0cd83dae14bf34f99338587ab043d" name="aedd0cd83dae14bf34f99338587ab043d"></a>
    203. 

  203. <h2 class="memtitle"><span class="permalink"><a href="#aedd0cd83dae14bf34f99338587ab043d">&#9670;&#160;</a></span>JPH_MAKE_HASH_STRUCT</h2>
    204. 

  204. 

  205. <div class="memitem">
    206. 

  206. <div class="memproto">
    207. 

  207.       <table class="memname">
    208. 

  208.         <tr>
    209. 

  209.           <td class="memname">#define JPH_MAKE_HASH_STRUCT</td>
    210. 

  210.           <td>(</td>
    211. 

  211.           <td class="paramtype"></td>          <td class="paramname"><span class="paramname"><em>type</em></span>, </td>
    212. 

  212.         </tr>
    213. 

  213.         <tr>
    214. 

  214.           <td class="paramkey"></td>
    215. 

  215.           <td></td>
    216. 

  216.           <td class="paramtype"></td>          <td class="paramname"><span class="paramname"><em>name</em></span>, </td>
    217. 

  217.         </tr>
    218. 

  218.         <tr>
    219. 

  219.           <td class="paramkey"></td>
    220. 

  220.           <td></td>
    221. 

  221.           <td class="paramtype"></td>          <td class="paramname"><span class="paramname"><em></em></span>...&#160;)</td>
    222. 

  222.         </tr>
    223. 

  223.       </table>
    224. 

  224. </div><div class="memdoc">
    225. 

  225. <b>Value:</b><div class="fragment"><div class="line">    <span class="keyword">struct </span>[[nodiscard]] name                               \</div>
    226. 

  226. <div class="line">    {                                                       \</div>
    227. 

  227. <div class="line">        ::JPH::uint64 operator()(<span class="keyword">const</span> type &amp;t) <span class="keyword">const</span>       \</div>
    228. 

  228. <div class="line">        {                                                   \</div>
    229. 

  229. <div class="line">            return ::JPH::HashCombineArgs(__VA_ARGS__);     \</div>
    230. 

  230. <div class="line">        }                                                   \</div>
    231. 

  231. <div class="line">    };</div>
    232. 

  232. </div><!-- fragment -->
    233. 

  233. </div>
    234. 

  234. </div>
    235. 

  235. <a id="acb214eb23a4f6646330f74bc5f72c938" name="acb214eb23a4f6646330f74bc5f72c938"></a>
    236. 

  236. <h2 class="memtitle"><span class="permalink"><a href="#acb214eb23a4f6646330f74bc5f72c938">&#9670;&#160;</a></span>JPH_MAKE_HASHABLE</h2>
    237. 

  237. 

  238. <div class="memitem">
    239. 

  239. <div class="memproto">
    240. 

  240.       <table class="memname">
    241. 

  241.         <tr>
    242. 

  242.           <td class="memname">#define JPH_MAKE_HASHABLE</td>
    243. 

  243.           <td>(</td>
    244. 

  244.           <td class="paramtype"></td>          <td class="paramname"><span class="paramname"><em>type</em></span>, </td>
    245. 

  245.         </tr>
    246. 

  246.         <tr>
    247. 

  247.           <td class="paramkey"></td>
    248. 

  248.           <td></td>
    249. 

  249.           <td class="paramtype"></td>          <td class="paramname"><span class="paramname"><em></em></span>...&#160;)</td>
    250. 

  250.         </tr>
    251. 

  251.       </table>
    252. 

  252. </div><div class="memdoc">
    253. 

  253. <b>Value:</b><div class="fragment"><div class="line">    JPH_SUPPRESS_WARNING_PUSH                               \</div>
    254. 

  254. <div class="line">    JPH_SUPPRESS_WARNINGS                                   \</div>
    255. 

  255. <div class="line">    namespace JPH                                           \</div>
    256. 

  256. <div class="line">    {                                                       \</div>
    257. 

  257. <div class="line">        template&lt;&gt;                                          \</div>
    258. 

  258. <div class="line">        JPH_MAKE_HASH_STRUCT(type, <a class="code hl_struct" href="struct_hash.html">Hash&lt;type&gt;</a>, __VA_ARGS__) \</div>
    259. 

  259. <div class="line">    }                                                       \</div>
    260. 

  260. <div class="line">    JPH_SUPPRESS_WARNING_POP                                \</div>
    261. 

  261. <div class="line">    JPH_MAKE_STD_HASH(type)</div>
    262. 

  262. </div><!-- fragment -->
    263. 

  263. </div>
    264. 

  264. </div>
    265. 

  265. <a id="a17475665ce4ff763a68a3fd9e82e826b" name="a17475665ce4ff763a68a3fd9e82e826b"></a>
    266. 

  266. <h2 class="memtitle"><span class="permalink"><a href="#a17475665ce4ff763a68a3fd9e82e826b">&#9670;&#160;</a></span>JPH_MAKE_STD_HASH</h2>
    267. 

  267. 

  268. <div class="memitem">
    269. 

  269. <div class="memproto">
    270. 

  270.       <table class="memname">
    271. 

  271.         <tr>
    272. 

  272.           <td class="memname">#define JPH_MAKE_STD_HASH</td>
    273. 

  273.           <td>(</td>
    274. 

  274.           <td class="paramtype"></td>          <td class="paramname"><span class="paramname"><em>type</em></span></td><td>)</td>
    275. 

  275.           <td></td>
    276. 

  276.         </tr>
    277. 

  277.       </table>
    278. 

  278. </div><div class="memdoc">
    279. 

  279. <b>Value:</b><div class="fragment"><div class="line">    JPH_SUPPRESS_WARNING_PUSH                               \</div>
    280. 

  280. <div class="line">    JPH_SUPPRESS_WARNINGS                                   \</div>
    281. 

  281. <div class="line">    namespace <a class="code hl_namespace" href="namespacestd.html">std</a>                                           \</div>
    282. 

  282. <div class="line">    {                                                       \</div>
    283. 

  283. <div class="line">        <span class="keyword">template</span>&lt;&gt;                                          \</div>
    284. 

  284. <div class="line">        <span class="keyword">struct </span>[[nodiscard]] hash&lt;type&gt;                     \</div>
    285. 

  285. <div class="line">        {                                                   \</div>
    286. 

  286. <div class="line">            <span class="keywordtype">size_t</span> operator()(<span class="keyword">const</span> type &amp;t) <span class="keyword">const</span>          \</div>
    287. 

  287. <div class="line">            {                                               \</div>
    288. 

  288. <div class="line">                <span class="keywordflow">return</span> size_t(::JPH::Hash&lt;type&gt;{ }(t));     \</div>
    289. 

  289. <div class="line">            }                                               \</div>
    290. 

  290. <div class="line">        };                                                  \</div>
    291. 

  291. <div class="line">    }                                                       \</div>
    292. 

  292. <div class="line">    JPH_SUPPRESS_WARNING_POP</div>
    293. 

  293. <div class="ttc" id="anamespacestd_html"><div class="ttname"><a href="namespacestd.html">std</a></div><div class="ttdef"><b>Definition</b> Array.h:699</div></div>
    294. 

  294. </div><!-- fragment -->
    295. 

  295. </div>
    296. 

  296. </div>
    297. 

  297. <h2 class="groupheader">Function Documentation</h2>
    298. 

  298. <a id="a8ce241fe287672b4a559499d341d2ee7" name="a8ce241fe287672b4a559499d341d2ee7"></a>
    299. 

  299. <h2 class="memtitle"><span class="permalink"><a href="#a8ce241fe287672b4a559499d341d2ee7">&#9670;&#160;</a></span>Hash64()</h2>
    300. 

  300. 

  301. <div class="memitem">
    302. 

  302. <div class="memproto">
    303. 

  303. <table class="mlabels">
    304. 

  304.   <tr>
    305. 

  305.   <td class="mlabels-left">
    306. 

  306.       <table class="memname">
    307. 

  307.         <tr>
    308. 

  308.           <td class="memname"><a class="el" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a> Hash64 </td>
    309. 

  309.           <td>(</td>
    310. 

  310.           <td class="paramtype"><a class="el" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a></td>          <td class="paramname"><span class="paramname"><em>inValue</em></span></td><td>)</td>
    311. 

  311.           <td></td>
    312. 

  312.         </tr>
    313. 

  313.       </table>
    314. 

  314.   </td>
    315. 

  315.   <td class="mlabels-right">
    316. 

  316. <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
    317. 

  317.   </tr>
    318. 

  318. </table>
    319. 

  319. </div><div class="memdoc">
    320. 

  320. <p>A 64 bit hash function by Thomas Wang, Jan 1997 See: <a href="http://web.archive.org/web/20071223173210/http://www.concentric.net/~Ttwang/tech/inthash.htm">http://web.archive.org/web/20071223173210/http://www.concentric.net/~Ttwang/tech/inthash.htm</a> </p><dl class="params"><dt>Parameters</dt><dd>
    321. 

  321.   <table class="params">
    322. 

  322.     <tr><td class="paramname">inValue</td><td>Value to hash </td></tr>
    323. 

  323.   </table>
    324. 

  324.   </dd>
    325. 

  325. </dl>
    326. 

  326. <dl class="section return"><dt>Returns</dt><dd><a class="el" href="struct_hash.html" title="Fallback hash function that calls T::GetHash()">Hash</a> </dd></dl>
    327. 

  327. 

  328. </div>
    329. 

  329. </div>
    330. 

  330. <a id="a396c677c4eb61f19e11cc202aac23c38" name="a396c677c4eb61f19e11cc202aac23c38"></a>
    331. 

  331. <h2 class="memtitle"><span class="permalink"><a href="#a396c677c4eb61f19e11cc202aac23c38">&#9670;&#160;</a></span>HashBytes()</h2>
    332. 

  332. 

  333. <div class="memitem">
    334. 

  334. <div class="memproto">
    335. 

  335. <table class="mlabels">
    336. 

  336.   <tr>
    337. 

  337.   <td class="mlabels-left">
    338. 

  338.       <table class="memname">
    339. 

  339.         <tr>
    340. 

  340.           <td class="memname"><a class="el" href="_core_8h.html#ad14098b68b8c44ea6112601031268405">JPH_NAMESPACE_BEGIN</a> <a class="el" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a> HashBytes </td>
    341. 

  341.           <td>(</td>
    342. 

  342.           <td class="paramtype">const void *</td>          <td class="paramname"><span class="paramname"><em>inData</em></span>, </td>
    343. 

  343.         </tr>
    344. 

  344.         <tr>
    345. 

  345.           <td class="paramkey"></td>
    346. 

  346.           <td></td>
    347. 

  347.           <td class="paramtype"><a class="el" href="_core_8h.html#a69aa29b598b851b0640aa225a9e5d61d">uint</a></td>          <td class="paramname"><span class="paramname"><em>inSize</em></span>, </td>
    348. 

  348.         </tr>
    349. 

  349.         <tr>
    350. 

  350.           <td class="paramkey"></td>
    351. 

  351.           <td></td>
    352. 

  352.           <td class="paramtype"><a class="el" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a></td>          <td class="paramname"><span class="paramname"><em>inSeed</em></span><span class="paramdefsep"> = </span><span class="paramdefval">0xcbf29ce484222325UL</span>&#160;)</td>
    353. 

  353.         </tr>
    354. 

  354.       </table>
    355. 

  355.   </td>
    356. 

  356.   <td class="mlabels-right">
    357. 

  357. <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
    358. 

  358.   </tr>
    359. 

  359. </table>
    360. 

  360. </div><div class="memdoc">
    361. 

  361. <p>Implements the FNV-1a hash algorithm </p><dl class="section see"><dt>See also</dt><dd><a href="https://en.wikipedia.org/wiki/Fowler%E2%80%93Noll%E2%80%93Vo_hash_function">https://en.wikipedia.org/wiki/Fowler%E2%80%93Noll%E2%80%93Vo_hash_function</a> </dd></dl>
    362. 

  362. <dl class="params"><dt>Parameters</dt><dd>
    363. 

  363.   <table class="params">
    364. 

  364.     <tr><td class="paramname">inData</td><td>Data block of bytes </td></tr>
    365. 

  365.     <tr><td class="paramname">inSize</td><td>Number of bytes </td></tr>
    366. 

  366.     <tr><td class="paramname">inSeed</td><td>Seed of the hash (can be used to pass in the hash of a previous operation, otherwise leave default) </td></tr>
    367. 

  367.   </table>
    368. 

  368.   </dd>
    369. 

  369. </dl>
    370. 

  370. <dl class="section return"><dt>Returns</dt><dd><a class="el" href="struct_hash.html" title="Fallback hash function that calls T::GetHash()">Hash</a> </dd></dl>
    371. 

  371. 

  372. </div>
    373. 

  373. </div>
    374. 

  374. <a id="aca48702d50d6db86a2bfba77688707d3" name="aca48702d50d6db86a2bfba77688707d3"></a>
    375. 

  375. <h2 class="memtitle"><span class="permalink"><a href="#aca48702d50d6db86a2bfba77688707d3">&#9670;&#160;</a></span>HashCombine()</h2>
    376. 

  376. 

  377. <div class="memitem">
    378. 

  378. <div class="memproto">
    379. 

  379. <div class="memtemplate">
    380. 

  380. template&lt;typename T &gt; </div>
    381. 

  381. <table class="mlabels">
    382. 

  382.   <tr>
    383. 

  383.   <td class="mlabels-left">
    384. 

  384.       <table class="memname">
    385. 

  385.         <tr>
    386. 

  386.           <td class="memname">void HashCombine </td>
    387. 

  387.           <td>(</td>
    388. 

  388.           <td class="paramtype"><a class="el" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a> &amp;</td>          <td class="paramname"><span class="paramname"><em>ioSeed</em></span>, </td>
    389. 

  389.         </tr>
    390. 

  390.         <tr>
    391. 

  391.           <td class="paramkey"></td>
    392. 

  392.           <td></td>
    393. 

  393.           <td class="paramtype">const T &amp;</td>          <td class="paramname"><span class="paramname"><em>inValue</em></span>&#160;)</td>
    394. 

  394.         </tr>
    395. 

  395.       </table>
    396. 

  396.   </td>
    397. 

  397.   <td class="mlabels-right">
    398. 

  398. <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
    399. 

  399.   </tr>
    400. 

  400. </table>
    401. 

  401. </div><div class="memdoc">
    402. 

  402. 

  403. <p>Commonly used types. </p>
    404. 

  404. <p>Helper function that hashes a single value into ioSeed Based on <a href="https://github.com/jonmaiga/mx3">https://github.com/jonmaiga/mx3</a> by Jon Maiga </p>
    405. 

  405. 

  406. </div>
    407. 

  407. </div>
    408. 

  408. <a id="a54628f60d56870ba54746a7829d4e403" name="a54628f60d56870ba54746a7829d4e403"></a>
    409. 

  409. <h2 class="memtitle"><span class="permalink"><a href="#a54628f60d56870ba54746a7829d4e403">&#9670;&#160;</a></span>HashCombineArgs()</h2>
    410. 

  410. 

  411. <div class="memitem">
    412. 

  412. <div class="memproto">
    413. 

  413. <div class="memtemplate">
    414. 

  414. template&lt;typename FirstValue , typename... Values&gt; </div>
    415. 

  415. <table class="mlabels">
    416. 

  416.   <tr>
    417. 

  417.   <td class="mlabels-left">
    418. 

  418.       <table class="memname">
    419. 

  419.         <tr>
    420. 

  420.           <td class="memname"><a class="el" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a> HashCombineArgs </td>
    421. 

  421.           <td>(</td>
    422. 

  422.           <td class="paramtype">const FirstValue &amp;</td>          <td class="paramname"><span class="paramname"><em>inFirstValue</em></span>, </td>
    423. 

  423.         </tr>
    424. 

  424.         <tr>
    425. 

  425.           <td class="paramkey"></td>
    426. 

  426.           <td></td>
    427. 

  427.           <td class="paramtype">Values...</td>          <td class="paramname"><span class="paramname"><em>inValues</em></span>&#160;)</td>
    428. 

  428.         </tr>
    429. 

  429.       </table>
    430. 

  430.   </td>
    431. 

  431.   <td class="mlabels-right">
    432. 

  432. <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
    433. 

  433.   </tr>
    434. 

  434. </table>
    435. 

  435. </div><div class="memdoc">
    436. 

  436. <p><a class="el" href="struct_hash.html" title="Fallback hash function that calls T::GetHash()">Hash</a> combiner to use a custom struct in an unordered map or set</p>
    437. 

  437. <p>Usage: </p><pre class="fragment">struct SomeHashKey
    438. 

  438. {
    439. 

  439.     std::string key1;
    440. 

  440.     std::string key2;
    441. 

  441.     bool key3;
    442. 

  442. };
    443. 

  443. 

  444. JPH_MAKE_HASHABLE(SomeHashKey, t.key1, t.key2, t.key3) 
    445. 

  445. </pre> 
    446. 

  446. </div>
    447. 

  447. </div>
    448. 

  448. <a id="a117e2894f38fb560424040083a44de95" name="a117e2894f38fb560424040083a44de95"></a>
    449. 

  449. <h2 class="memtitle"><span class="permalink"><a href="#a117e2894f38fb560424040083a44de95">&#9670;&#160;</a></span>HashString()</h2>
    450. 

  450. 

  451. <div class="memitem">
    452. 

  452. <div class="memproto">
    453. 

  453. <table class="mlabels">
    454. 

  454.   <tr>
    455. 

  455.   <td class="mlabels-left">
    456. 

  456.       <table class="memname">
    457. 

  457.         <tr>
    458. 

  458.           <td class="memname"><a class="el" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a> HashString </td>
    459. 

  459.           <td>(</td>
    460. 

  460.           <td class="paramtype">const char *</td>          <td class="paramname"><span class="paramname"><em>inString</em></span>, </td>
    461. 

  461.         </tr>
    462. 

  462.         <tr>
    463. 

  463.           <td class="paramkey"></td>
    464. 

  464.           <td></td>
    465. 

  465.           <td class="paramtype"><a class="el" href="_core_8h.html#a60e8696a4678cd348e991a1f172e53f7">uint64</a></td>          <td class="paramname"><span class="paramname"><em>inSeed</em></span><span class="paramdefsep"> = </span><span class="paramdefval">0xcbf29ce484222325UL</span>&#160;)</td>
    466. 

  466.         </tr>
    467. 

  467.       </table>
    468. 

  468.   </td>
    469. 

  469.   <td class="mlabels-right">
    470. 

  470. <span class="mlabels"><span class="mlabel">constexpr</span></span>  </td>
    471. 

  471.   </tr>
    472. 

  472. </table>
    473. 

  473. </div><div class="memdoc">
    474. 

  474. <p>Calculate the FNV-1a hash of inString. </p><dl class="section see"><dt>See also</dt><dd><a href="https://en.wikipedia.org/wiki/Fowler%E2%80%93Noll%E2%80%93Vo_hash_function">https://en.wikipedia.org/wiki/Fowler%E2%80%93Noll%E2%80%93Vo_hash_function</a> </dd></dl>
    475. 

  475. 

  476. </div>
    477. 

  477. </div>
    478. 

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