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<div class="title">hash_fun.h</div> </div>
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<a href="hash__fun_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*****************************************************************************/</span><span class="comment"></span>
<a name="l00002"></a>00002 <span class="comment">/*!</span>
<a name="l00003"></a>00003 <span class="comment"> *\file hash_fun.h</span>
<a name="l00004"></a>00004 <span class="comment"> *\brief hash functions</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * Author: Alexander Fuchs</span>
<a name="l00007"></a>00007 <span class="comment"> *</span>
<a name="l00008"></a>00008 <span class="comment"> * Created: Fri Oct 20 11:04:00 2006</span>
<a name="l00009"></a>00009 <span class="comment"> *</span>
<a name="l00010"></a>00010 <span class="comment"> * <hr></span>
<a name="l00011"></a>00011 <span class="comment"> *</span>
<a name="l00012"></a>00012 <span class="comment"> * License to use, copy, modify, sell and/or distribute this software</span>
<a name="l00013"></a>00013 <span class="comment"> * and its documentation for any purpose is hereby granted without</span>
<a name="l00014"></a>00014 <span class="comment"> * royalty, subject to the terms and conditions defined in the \ref</span>
<a name="l00015"></a>00015 <span class="comment"> * LICENSE file provided with this distribution.</span>
<a name="l00016"></a>00016 <span class="comment"> * </span>
<a name="l00017"></a>00017 <span class="comment"> * <hr></span>
<a name="l00018"></a>00018 <span class="comment"> */</span>
<a name="l00019"></a>00019 <span class="comment">/*****************************************************************************/</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="comment">/*</span>
<a name="l00022"></a>00022 <span class="comment"> * Copyright (c) 1996-1998</span>
<a name="l00023"></a>00023 <span class="comment"> * Silicon Graphics Computer Systems, Inc.</span>
<a name="l00024"></a>00024 <span class="comment"> *</span>
<a name="l00025"></a>00025 <span class="comment"> * Permission to use, copy, modify, distribute and sell this software</span>
<a name="l00026"></a>00026 <span class="comment"> * and its documentation for any purpose is hereby granted without fee,</span>
<a name="l00027"></a>00027 <span class="comment"> * provided that the above copyright notice appear in all copies and</span>
<a name="l00028"></a>00028 <span class="comment"> * that both that copyright notice and this permission notice appear</span>
<a name="l00029"></a>00029 <span class="comment"> * in supporting documentation. Silicon Graphics makes no</span>
<a name="l00030"></a>00030 <span class="comment"> * representations about the suitability of this software for any</span>
<a name="l00031"></a>00031 <span class="comment"> * purpose. It is provided "as is" without express or implied warranty.</span>
<a name="l00032"></a>00032 <span class="comment"> *</span>
<a name="l00033"></a>00033 <span class="comment"> *</span>
<a name="l00034"></a>00034 <span class="comment"> * Copyright (c) 1994</span>
<a name="l00035"></a>00035 <span class="comment"> * Hewlett-Packard Company</span>
<a name="l00036"></a>00036 <span class="comment"> *</span>
<a name="l00037"></a>00037 <span class="comment"> * Permission to use, copy, modify, distribute and sell this software</span>
<a name="l00038"></a>00038 <span class="comment"> * and its documentation for any purpose is hereby granted without fee,</span>
<a name="l00039"></a>00039 <span class="comment"> * provided that the above copyright notice appear in all copies and</span>
<a name="l00040"></a>00040 <span class="comment"> * that both that copyright notice and this permission notice appear</span>
<a name="l00041"></a>00041 <span class="comment"> * in supporting documentation. Hewlett-Packard Company makes no</span>
<a name="l00042"></a>00042 <span class="comment"> * representations about the suitability of this software for any</span>
<a name="l00043"></a>00043 <span class="comment"> * purpose. It is provided "as is" without express or implied warranty.</span>
<a name="l00044"></a>00044 <span class="comment"> *</span>
<a name="l00045"></a>00045 <span class="comment"> */</span>
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="comment">// this is basically (modulo renaming and namespace) the SGI implementation:</span>
<a name="l00048"></a>00048 <span class="comment">// http://www.sgi.com/tech/stl/stl_hash_fun.h</span>
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="preprocessor">#ifndef _cvc3__hash__hash_fun_h_</span>
<a name="l00051"></a>00051 <span class="preprocessor"></span><span class="preprocessor">#define _cvc3__hash__hash_fun_h_</span>
<a name="l00052"></a>00052 <span class="preprocessor"></span>
<a name="l00053"></a>00053 <span class="comment">// to get size_t</span>
<a name="l00054"></a>00054 <span class="preprocessor">#include <cstddef></span>
<a name="l00055"></a>00055
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="keyword">namespace </span>Hash {
<a name="l00058"></a>00058 <span class="keyword">using</span> std::size_t;
<a name="l00059"></a>00059
<a name="l00060"></a><a class="code" href="structHash_1_1hash.html">00060</a> <span class="keyword">template</span> <<span class="keyword">class</span> _Key> <span class="keyword">struct </span><a class="code" href="structHash_1_1hash.html">hash</a> { };
<a name="l00061"></a>00061
<a name="l00062"></a><a class="code" href="namespaceHash.html#af874f42ac433f219af18d0c2e7e63820">00062</a> <span class="keyword">inline</span> <span class="keywordtype">size_t</span> <a class="code" href="namespaceHash.html#af874f42ac433f219af18d0c2e7e63820">__stl_hash_string</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s)
<a name="l00063"></a>00063 {
<a name="l00064"></a>00064 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> __h = 0;
<a name="l00065"></a>00065 <span class="keywordflow">for</span> ( ; *__s; ++__s)
<a name="l00066"></a>00066 __h = 5*__h + *__s;
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="keywordflow">return</span> size_t(__h);
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070
<a name="l00071"></a><a class="code" href="structHash_1_1hash_3_01char_01_5_01_4.html">00071</a> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="structHash_1_1hash.html">hash</a><char*> {
<a name="l00072"></a><a class="code" href="structHash_1_1hash_3_01char_01_5_01_4.html#afd6dda4a3f29603909cba9b943278bb3">00072</a> <span class="keywordtype">size_t</span> <a class="code" href="structHash_1_1hash_3_01char_01_5_01_4.html#afd6dda4a3f29603909cba9b943278bb3">operator()</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="namespaceHash.html#af874f42ac433f219af18d0c2e7e63820">__stl_hash_string</a>(__s); }
<a name="l00073"></a>00073 };
<a name="l00074"></a>00074
<a name="l00075"></a><a class="code" href="structHash_1_1hash_3_01const_01char_01_5_01_4.html">00075</a> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="structHash_1_1hash.html">hash</a><const char*>
<a name="l00076"></a>00076 {
<a name="l00077"></a><a class="code" href="structHash_1_1hash_3_01const_01char_01_5_01_4.html#a2a26d547c01e9872f5e6ca6518f95c0d">00077</a> <span class="keywordtype">size_t</span> <a class="code" href="structHash_1_1hash_3_01const_01char_01_5_01_4.html#a2a26d547c01e9872f5e6ca6518f95c0d">operator()</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="namespaceHash.html#af874f42ac433f219af18d0c2e7e63820">__stl_hash_string</a>(__s); }
<a name="l00078"></a>00078 };
<a name="l00079"></a>00079
<a name="l00080"></a><a class="code" href="structHash_1_1hash_3_01char_01_4.html">00080</a> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="structHash_1_1hash.html">hash</a><char> {
<a name="l00081"></a><a class="code" href="structHash_1_1hash_3_01char_01_4.html#a4db5ee4308227450b5fee6f0d5fe7020">00081</a> <span class="keywordtype">size_t</span> <a class="code" href="structHash_1_1hash_3_01char_01_4.html#a4db5ee4308227450b5fee6f0d5fe7020">operator()</a>(<span class="keywordtype">char</span> __x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> __x; }
<a name="l00082"></a>00082 };
<a name="l00083"></a>00083
<a name="l00084"></a><a class="code" href="structHash_1_1hash_3_01unsigned_01char_01_4.html">00084</a> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="structHash_1_1hash.html">hash</a><unsigned char> {
<a name="l00085"></a><a class="code" href="structHash_1_1hash_3_01unsigned_01char_01_4.html#abb39c670a2145d6880c272d38af956ff">00085</a> <span class="keywordtype">size_t</span> <a class="code" href="structHash_1_1hash_3_01unsigned_01char_01_4.html#abb39c670a2145d6880c272d38af956ff">operator()</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> __x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> __x; }
<a name="l00086"></a>00086 };
<a name="l00087"></a>00087
<a name="l00088"></a><a class="code" href="structHash_1_1hash_3_01signed_01char_01_4.html">00088</a> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="structHash_1_1hash.html">hash</a><signed char> {
<a name="l00089"></a><a class="code" href="structHash_1_1hash_3_01signed_01char_01_4.html#ae1a1c3e2a1b1642242a0b9d6d32b91a2">00089</a> <span class="keywordtype">size_t</span> <a class="code" href="structHash_1_1hash_3_01signed_01char_01_4.html#ae1a1c3e2a1b1642242a0b9d6d32b91a2">operator()</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> __x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> __x; }
<a name="l00090"></a>00090 };
<a name="l00091"></a>00091
<a name="l00092"></a><a class="code" href="structHash_1_1hash_3_01short_01_4.html">00092</a> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="structHash_1_1hash.html">hash</a><short> {
<a name="l00093"></a><a class="code" href="structHash_1_1hash_3_01short_01_4.html#a455b7cf35ad03c4708331f7c97f9e52a">00093</a> <span class="keywordtype">size_t</span> <a class="code" href="structHash_1_1hash_3_01short_01_4.html#a455b7cf35ad03c4708331f7c97f9e52a">operator()</a>(<span class="keywordtype">short</span> __x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> __x; }
<a name="l00094"></a>00094 };
<a name="l00095"></a>00095
<a name="l00096"></a><a class="code" href="structHash_1_1hash_3_01unsigned_01short_01_4.html">00096</a> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="structHash_1_1hash.html">hash</a><unsigned short> {
<a name="l00097"></a><a class="code" href="structHash_1_1hash_3_01unsigned_01short_01_4.html#a958a2332b3c8bd4073fb0661c4fc2f54">00097</a> <span class="keywordtype">size_t</span> <a class="code" href="structHash_1_1hash_3_01unsigned_01short_01_4.html#a958a2332b3c8bd4073fb0661c4fc2f54">operator()</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> __x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> __x; }
<a name="l00098"></a>00098 };
<a name="l00099"></a>00099
<a name="l00100"></a><a class="code" href="structHash_1_1hash_3_01int_01_4.html">00100</a> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="structHash_1_1hash.html">hash</a><int> {
<a name="l00101"></a><a class="code" href="structHash_1_1hash_3_01int_01_4.html#ad4219cc0bcfc10cff057e60d4e82dba3">00101</a> <span class="keywordtype">size_t</span> <a class="code" href="structHash_1_1hash_3_01int_01_4.html#ad4219cc0bcfc10cff057e60d4e82dba3">operator()</a>(<span class="keywordtype">int</span> __x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> __x; }
<a name="l00102"></a>00102 };
<a name="l00103"></a>00103
<a name="l00104"></a><a class="code" href="structHash_1_1hash_3_01unsigned_01int_01_4.html">00104</a> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="structHash_1_1hash.html">hash</a><unsigned int> {
<a name="l00105"></a><a class="code" href="structHash_1_1hash_3_01unsigned_01int_01_4.html#abb4a7bdcca75efd3c8f6c62105490512">00105</a> <span class="keywordtype">size_t</span> <a class="code" href="structHash_1_1hash_3_01unsigned_01int_01_4.html#abb4a7bdcca75efd3c8f6c62105490512">operator()</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> __x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> __x; }
<a name="l00106"></a>00106 };
<a name="l00107"></a>00107
<a name="l00108"></a><a class="code" href="structHash_1_1hash_3_01long_01_4.html">00108</a> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="structHash_1_1hash.html">hash</a><long> {
<a name="l00109"></a><a class="code" href="structHash_1_1hash_3_01long_01_4.html#a6e73415cc9ea27d48a66177df0b9d00c">00109</a> <span class="keywordtype">size_t</span> <a class="code" href="structHash_1_1hash_3_01long_01_4.html#a6e73415cc9ea27d48a66177df0b9d00c">operator()</a>(<span class="keywordtype">long</span> __x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> __x; }
<a name="l00110"></a>00110 };
<a name="l00111"></a>00111
<a name="l00112"></a><a class="code" href="structHash_1_1hash_3_01unsigned_01long_01_4.html">00112</a> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="structHash_1_1hash.html">hash</a><unsigned long> {
<a name="l00113"></a><a class="code" href="structHash_1_1hash_3_01unsigned_01long_01_4.html#ae28f3599db13dde4b16d36bfb8e82f43">00113</a> <span class="keywordtype">size_t</span> <a class="code" href="structHash_1_1hash_3_01unsigned_01long_01_4.html#ae28f3599db13dde4b16d36bfb8e82f43">operator()</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> __x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> __x; }
<a name="l00114"></a>00114 };
<a name="l00115"></a>00115
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117
<a name="l00118"></a>00118 <span class="preprocessor">#endif</span>
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