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<div class="title">logmath.h</div> </div>
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<a href="logmath_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> <span class="comment">/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">/* ====================================================================</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Copyright (c) 2007 Carnegie Mellon University. All rights</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * reserved.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * modification, are permitted provided that the following conditions</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * are met:</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * 1. Redistributions of source code must retain the above copyright</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * notice, this list of conditions and the following disclaimer. </span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * notice, this list of conditions and the following disclaimer in</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * the documentation and/or other materials provided with the</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * distribution.</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * This work was supported in part by funding from the Defense Advanced </span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * Research Projects Agency and the National Science Foundation of the </span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * United States of America, and the CMU Sphinx Speech Consortium.</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND </span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, </span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT </span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, </span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY </span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT </span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE </span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> * ====================================================================</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="preprocessor">#ifndef __LOGMATH_H__</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="preprocessor">#define __LOGMATH_H__</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="preprocessor">#include <sphinxbase/sphinxbase_export.h></span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="preprocessor">#include <<a class="code" href="prim__type_8h.html">sphinxbase/prim_type.h</a>></span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="preprocessor">#include <<a class="code" href="cmd__ln_8h.html">sphinxbase/cmd_ln.h</a>></span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="preprocessor">#if 0</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment">/* Fool Emacs. */</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> }</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
<div class="line"><a name="l00093"></a><span class="lineno"><a class="line" href="logmath_8h.html#a8c04c94e2c6364f6cf3b649eb4ce5bfd"> 93</a></span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structlogadd__s.html">logadd_s</a> <a class="code" href="structlogadd__s.html">logadd_t</a>;</div>
<div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="structlogadd__s.html"> 94</a></span> <span class="keyword">struct </span><a class="code" href="structlogadd__s.html">logadd_s</a> {</div>
<div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="structlogadd__s.html#a27793577d513d85cd73c2daffc140695"> 96</a></span>  <span class="keywordtype">void</span> *<a class="code" href="structlogadd__s.html#a27793577d513d85cd73c2daffc140695">table</a>;</div>
<div class="line"><a name="l00098"></a><span class="lineno"><a class="line" href="structlogadd__s.html#a484c53a05b46d863d0456af679cee5d8"> 98</a></span>  uint32 <a class="code" href="structlogadd__s.html#a484c53a05b46d863d0456af679cee5d8">table_size</a>;</div>
<div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="structlogadd__s.html#a8e35a353d751d957270baf5192007c3e"> 100</a></span>  uint8 <a class="code" href="structlogadd__s.html#a8e35a353d751d957270baf5192007c3e">width</a>;</div>
<div class="line"><a name="l00102"></a><span class="lineno"><a class="line" href="structlogadd__s.html#a4000a49e71ed2c09da4f34cb5ccaed4b"> 102</a></span>  int8 <a class="code" href="structlogadd__s.html#a4000a49e71ed2c09da4f34cb5ccaed4b">shift</a>;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> };</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div>
<div class="line"><a name="l00108"></a><span class="lineno"><a class="line" href="logmath_8h.html#ae613aa7db1dd40ff56a80a7dadb22cc8"> 108</a></span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structlogmath__s.html">logmath_s</a> <a class="code" href="structlogmath__s.html">logmath_t</a>;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div>
<div class="line"><a name="l00113"></a><span class="lineno"><a class="line" href="logmath_8h.html#ae5c5ce106e9f8f1e763d419de53317a8"> 113</a></span> <span class="preprocessor">#define LOGMATH_TABLE(lm) ((logadd_t *)lm)</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <a class="code" href="structlogmath__s.html">logmath_t</a> *<a class="code" href="logmath_8h.html#a5835860c5f6a703c80c0214f816f0b11">logmath_init</a>(float64 base, <span class="keywordtype">int</span> shift, <span class="keywordtype">int</span> use_table);</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <a class="code" href="structlogmath__s.html">logmath_t</a> *<a class="code" href="logmath_8h.html#afbed298ba0bc4736415d78880fe5c7c2">logmath_read</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *filename);</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> int32 <a class="code" href="logmath_8h.html#a787070f5e689878348ef219245fc7c44">logmath_write</a>(<a class="code" href="structlogmath__s.html">logmath_t</a> *lmath, <span class="keyword">const</span> <span class="keywordtype">char</span> *filename);</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> int32 <a class="code" href="logmath_8h.html#a3280500e77bf27aa7cda23268b8eb8b3">logmath_get_table_shape</a>(<a class="code" href="structlogmath__s.html">logmath_t</a> *lmath, uint32 *out_size,</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  uint32 *out_width, uint32 *out_shift);</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> float64 <a class="code" href="logmath_8h.html#a6114206ec0321d7015c42fc7b81cb83e">logmath_get_base</a>(<a class="code" href="structlogmath__s.html">logmath_t</a> *lmath);</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="keywordtype">int</span> <a class="code" href="logmath_8h.html#a1c160c28a9e7d25923f391773b1028c0">logmath_get_zero</a>(<a class="code" href="structlogmath__s.html">logmath_t</a> *lmath);</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="keywordtype">int</span> <a class="code" href="logmath_8h.html#a0cd690d2a414aebb5e126b8cabbfabde">logmath_get_width</a>(<a class="code" href="structlogmath__s.html">logmath_t</a> *lmath);</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="keywordtype">int</span> <a class="code" href="logmath_8h.html#aed009aca9736612bebdda57444ec63a6">logmath_get_shift</a>(<a class="code" href="structlogmath__s.html">logmath_t</a> *lmath);</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <a class="code" href="structlogmath__s.html">logmath_t</a> *<a class="code" href="logmath_8h.html#a1c1b2ba3b137a39e9e835a8f3e27d381">logmath_retain</a>(<a class="code" href="structlogmath__s.html">logmath_t</a> *lmath);</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="keywordtype">int</span> <a class="code" href="logmath_8h.html#a97865ef8bc1e8e2525a2329e0627ecfb">logmath_free</a>(<a class="code" href="structlogmath__s.html">logmath_t</a> *lmath);</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> </div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="keywordtype">int</span> <a class="code" href="logmath_8h.html#a61bf79c70a38f00ca060b69b0efd7489">logmath_add_exact</a>(<a class="code" href="structlogmath__s.html">logmath_t</a> *lmath, <span class="keywordtype">int</span> logb_p, <span class="keywordtype">int</span> logb_q);</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> </div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="keywordtype">int</span> <a class="code" href="logmath_8h.html#a5eb70928578b0115c9c7ac2765396a06">logmath_add</a>(<a class="code" href="structlogmath__s.html">logmath_t</a> *lmath, <span class="keywordtype">int</span> logb_p, <span class="keywordtype">int</span> logb_q);</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> </div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="keywordtype">int</span> <a class="code" href="logmath_8h.html#aebb4711268322fa7aec31e5798fe7e90">logmath_log</a>(<a class="code" href="structlogmath__s.html">logmath_t</a> *lmath, float64 p);</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> </div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> float64 <a class="code" href="logmath_8h.html#ae8b0a168e29e448c0d6de66dc46e099e">logmath_exp</a>(<a class="code" href="structlogmath__s.html">logmath_t</a> *lmath, <span class="keywordtype">int</span> logb_p);</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="keywordtype">int</span> <a class="code" href="logmath_8h.html#a52eff2c778ad758888b03ac5efcdccea">logmath_ln_to_log</a>(<a class="code" href="structlogmath__s.html">logmath_t</a> *lmath, float64 log_p);</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> </div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> float64 <a class="code" href="logmath_8h.html#a8035e176636eae8b4e02fe488f25457a">logmath_log_to_ln</a>(<a class="code" href="structlogmath__s.html">logmath_t</a> *lmath, <span class="keywordtype">int</span> logb_p);</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> </div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> <span class="keywordtype">int</span> <a class="code" href="logmath_8h.html#aacb4dddeed63a61fb927915f7e3a642e">logmath_log10_to_log</a>(<a class="code" href="structlogmath__s.html">logmath_t</a> *lmath, float64 log_p);</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> </div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> SPHINXBASE_EXPORT</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> float64 <a class="code" href="logmath_8h.html#a7c17cb624003975e84fbd141ca6e2e06">logmath_log_to_log10</a>(<a class="code" href="structlogmath__s.html">logmath_t</a> *lmath, <span class="keywordtype">int</span> logb_p);</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> </div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> }</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> </div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> </div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="preprocessor">#endif </span><span class="comment">/* __LOGMATH_H__ */</span><span class="preprocessor"></span></div>
<div class="ttc" id="cmd__ln_8h_html"><div class="ttname"><a href="cmd__ln_8h.html">cmd_ln.h</a></div><div class="ttdoc">Command-line and other configurationparsing and handling. </div></div>
<div class="ttc" id="logmath_8h_html_a3280500e77bf27aa7cda23268b8eb8b3"><div class="ttname"><a href="logmath_8h.html#a3280500e77bf27aa7cda23268b8eb8b3">logmath_get_table_shape</a></div><div class="ttdeci">SPHINXBASE_EXPORT int32 logmath_get_table_shape(logmath_t *lmath, uint32 *out_size, uint32 *out_width, uint32 *out_shift)</div><div class="ttdoc">Get the log table size and dimensions. </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00357">logmath.c:357</a></div></div>
<div class="ttc" id="structlogmath__s_html"><div class="ttname"><a href="structlogmath__s.html">logmath_s</a></div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00049">logmath.c:49</a></div></div>
<div class="ttc" id="logmath_8h_html_aebb4711268322fa7aec31e5798fe7e90"><div class="ttname"><a href="logmath_8h.html#aebb4711268322fa7aec31e5798fe7e90">logmath_log</a></div><div class="ttdeci">SPHINXBASE_EXPORT int logmath_log(logmath_t *lmath, float64 p)</div><div class="ttdoc">Convert linear floating point number to integer log in base B. </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00447">logmath.c:447</a></div></div>
<div class="ttc" id="logmath_8h_html_a97865ef8bc1e8e2525a2329e0627ecfb"><div class="ttname"><a href="logmath_8h.html#a97865ef8bc1e8e2525a2329e0627ecfb">logmath_free</a></div><div class="ttdeci">SPHINXBASE_EXPORT int logmath_free(logmath_t *lmath)</div><div class="ttdoc">Free a log table. </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00342">logmath.c:342</a></div></div>
<div class="ttc" id="prim__type_8h_html"><div class="ttname"><a href="prim__type_8h.html">prim_type.h</a></div><div class="ttdoc">Basic type definitions used in Sphinx. </div></div>
<div class="ttc" id="logmath_8h_html_a5835860c5f6a703c80c0214f816f0b11"><div class="ttname"><a href="logmath_8h.html#a5835860c5f6a703c80c0214f816f0b11">logmath_init</a></div><div class="ttdeci">SPHINXBASE_EXPORT logmath_t * logmath_init(float64 base, int shift, int use_table)</div><div class="ttdoc">Initialize a log math computation table. </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00062">logmath.c:62</a></div></div>
<div class="ttc" id="logmath_8h_html_a61bf79c70a38f00ca060b69b0efd7489"><div class="ttname"><a href="logmath_8h.html#a61bf79c70a38f00ca060b69b0efd7489">logmath_add_exact</a></div><div class="ttdeci">SPHINXBASE_EXPORT int logmath_add_exact(logmath_t *lmath, int logb_p, int logb_q)</div><div class="ttdoc">Add two values in log space exactly and slowly (without using add table). </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00439">logmath.c:439</a></div></div>
<div class="ttc" id="logmath_8h_html_a8035e176636eae8b4e02fe488f25457a"><div class="ttname"><a href="logmath_8h.html#a8035e176636eae8b4e02fe488f25457a">logmath_log_to_ln</a></div><div class="ttdeci">SPHINXBASE_EXPORT float64 logmath_log_to_ln(logmath_t *lmath, int logb_p)</div><div class="ttdoc">Convert integer log in base B to natural log (in floating point). </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00468">logmath.c:468</a></div></div>
<div class="ttc" id="structlogadd__s_html_a484c53a05b46d863d0456af679cee5d8"><div class="ttname"><a href="structlogadd__s.html#a484c53a05b46d863d0456af679cee5d8">logadd_s::table_size</a></div><div class="ttdeci">uint32 table_size</div><div class="ttdoc">Number of elements in (table). </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8h_source.html#l00098">logmath.h:98</a></div></div>
<div class="ttc" id="logmath_8h_html_aed009aca9736612bebdda57444ec63a6"><div class="ttname"><a href="logmath_8h.html#aed009aca9736612bebdda57444ec63a6">logmath_get_shift</a></div><div class="ttdeci">SPHINXBASE_EXPORT int logmath_get_shift(logmath_t *lmath)</div><div class="ttdoc">Get the shift of the values in a log table. </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00386">logmath.c:386</a></div></div>
<div class="ttc" id="logmath_8h_html_a6114206ec0321d7015c42fc7b81cb83e"><div class="ttname"><a href="logmath_8h.html#a6114206ec0321d7015c42fc7b81cb83e">logmath_get_base</a></div><div class="ttdeci">SPHINXBASE_EXPORT float64 logmath_get_base(logmath_t *lmath)</div><div class="ttdoc">Get the log base. </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00368">logmath.c:368</a></div></div>
<div class="ttc" id="logmath_8h_html_a1c1b2ba3b137a39e9e835a8f3e27d381"><div class="ttname"><a href="logmath_8h.html#a1c1b2ba3b137a39e9e835a8f3e27d381">logmath_retain</a></div><div class="ttdeci">SPHINXBASE_EXPORT logmath_t * logmath_retain(logmath_t *lmath)</div><div class="ttdoc">Retain ownership of a log table. </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00335">logmath.c:335</a></div></div>
<div class="ttc" id="structlogadd__s_html_a27793577d513d85cd73c2daffc140695"><div class="ttname"><a href="structlogadd__s.html#a27793577d513d85cd73c2daffc140695">logadd_s::table</a></div><div class="ttdeci">void * table</div><div class="ttdoc">Table, in unsigned integers of (width) bytes. </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8h_source.html#l00096">logmath.h:96</a></div></div>
<div class="ttc" id="logmath_8h_html_a1c160c28a9e7d25923f391773b1028c0"><div class="ttname"><a href="logmath_8h.html#a1c160c28a9e7d25923f391773b1028c0">logmath_get_zero</a></div><div class="ttdeci">SPHINXBASE_EXPORT int logmath_get_zero(logmath_t *lmath)</div><div class="ttdoc">Get the smallest possible value represented in this base. </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00374">logmath.c:374</a></div></div>
<div class="ttc" id="structlogadd__s_html_a4000a49e71ed2c09da4f34cb5ccaed4b"><div class="ttname"><a href="structlogadd__s.html#a4000a49e71ed2c09da4f34cb5ccaed4b">logadd_s::shift</a></div><div class="ttdeci">int8 shift</div><div class="ttdoc">Right shift applied to elements in (table). </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8h_source.html#l00102">logmath.h:102</a></div></div>
<div class="ttc" id="logmath_8h_html_afbed298ba0bc4736415d78880fe5c7c2"><div class="ttname"><a href="logmath_8h.html#afbed298ba0bc4736415d78880fe5c7c2">logmath_read</a></div><div class="ttdeci">SPHINXBASE_EXPORT logmath_t * logmath_read(const char *filename)</div><div class="ttdoc">Memory-map (or read) a log table from a file. </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00164">logmath.c:164</a></div></div>
<div class="ttc" id="logmath_8h_html_a0cd690d2a414aebb5e126b8cabbfabde"><div class="ttname"><a href="logmath_8h.html#a0cd690d2a414aebb5e126b8cabbfabde">logmath_get_width</a></div><div class="ttdeci">SPHINXBASE_EXPORT int logmath_get_width(logmath_t *lmath)</div><div class="ttdoc">Get the width of the values in a log table. </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00380">logmath.c:380</a></div></div>
<div class="ttc" id="structlogadd__s_html"><div class="ttname"><a href="structlogadd__s.html">logadd_s</a></div><div class="ttdef"><b>Definition:</b> <a href="logmath_8h_source.html#l00094">logmath.h:94</a></div></div>
<div class="ttc" id="logmath_8h_html_a7c17cb624003975e84fbd141ca6e2e06"><div class="ttname"><a href="logmath_8h.html#a7c17cb624003975e84fbd141ca6e2e06">logmath_log_to_log10</a></div><div class="ttdeci">SPHINXBASE_EXPORT float64 logmath_log_to_log10(logmath_t *lmath, int logb_p)</div><div class="ttdoc">Convert integer log in base B to base 10 log (in floating point). </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00480">logmath.c:480</a></div></div>
<div class="ttc" id="structlogadd__s_html_a8e35a353d751d957270baf5192007c3e"><div class="ttname"><a href="structlogadd__s.html#a8e35a353d751d957270baf5192007c3e">logadd_s::width</a></div><div class="ttdeci">uint8 width</div><div class="ttdoc">Width of elements of (table). </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8h_source.html#l00100">logmath.h:100</a></div></div>
<div class="ttc" id="logmath_8h_html_a787070f5e689878348ef219245fc7c44"><div class="ttname"><a href="logmath_8h.html#a787070f5e689878348ef219245fc7c44">logmath_write</a></div><div class="ttdeci">SPHINXBASE_EXPORT int32 logmath_write(logmath_t *lmath, const char *filename)</div><div class="ttdoc">Write a log table to a file. </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00272">logmath.c:272</a></div></div>
<div class="ttc" id="logmath_8h_html_ae8b0a168e29e448c0d6de66dc46e099e"><div class="ttname"><a href="logmath_8h.html#ae8b0a168e29e448c0d6de66dc46e099e">logmath_exp</a></div><div class="ttdeci">SPHINXBASE_EXPORT float64 logmath_exp(logmath_t *lmath, int logb_p)</div><div class="ttdoc">Convert integer log in base B to linear floating point. </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00456">logmath.c:456</a></div></div>
<div class="ttc" id="logmath_8h_html_aacb4dddeed63a61fb927915f7e3a642e"><div class="ttname"><a href="logmath_8h.html#aacb4dddeed63a61fb927915f7e3a642e">logmath_log10_to_log</a></div><div class="ttdeci">SPHINXBASE_EXPORT int logmath_log10_to_log(logmath_t *lmath, float64 log_p)</div><div class="ttdoc">Convert base 10 log (in floating point) to integer log in base B. </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00474">logmath.c:474</a></div></div>
<div class="ttc" id="logmath_8h_html_a52eff2c778ad758888b03ac5efcdccea"><div class="ttname"><a href="logmath_8h.html#a52eff2c778ad758888b03ac5efcdccea">logmath_ln_to_log</a></div><div class="ttdeci">SPHINXBASE_EXPORT int logmath_ln_to_log(logmath_t *lmath, float64 log_p)</div><div class="ttdoc">Convert natural log (in floating point) to integer log in base B. </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00462">logmath.c:462</a></div></div>
<div class="ttc" id="logmath_8h_html_a5eb70928578b0115c9c7ac2765396a06"><div class="ttname"><a href="logmath_8h.html#a5eb70928578b0115c9c7ac2765396a06">logmath_add</a></div><div class="ttdeci">SPHINXBASE_EXPORT int logmath_add(logmath_t *lmath, int logb_p, int logb_q)</div><div class="ttdoc">Add two values in log space (i.e. </div><div class="ttdef"><b>Definition:</b> <a href="logmath_8c_source.html#l00392">logmath.c:392</a></div></div>
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