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 <span id="projectnumber">2.7.1</span>
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<div class="title">libavutil/mathematics.h File Reference</div> </div>
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<div class="textblock"><code>#include <stdint.h></code><br/>
<code>#include <math.h></code><br/>
<code>#include "<a class="el" href="attributes_8h_source.html">attributes.h</a>"</code><br/>
<code>#include "<a class="el" href="rational_8h_source.html">rational.h</a>"</code><br/>
<code>#include "<a class="el" href="intfloat_8h_source.html">intfloat.h</a>"</code><br/>
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<p><a href="mathematics_8h_source.html">Go to the source code of this file.</a></p>
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Enumerations</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__math.html#ga921d656eaf2c4d6800a734a13af021d0">AVRounding</a> { <br/>
  <a class="el" href="group__lavu__math.html#gga921d656eaf2c4d6800a734a13af021d0a35e291756025351803b97f7522b56eab">AV_ROUND_ZERO</a> = 0,
<a class="el" href="group__lavu__math.html#gga921d656eaf2c4d6800a734a13af021d0a0ac08aede35de739ec5d0c1ba6217126">AV_ROUND_INF</a> = 1,
<a class="el" href="group__lavu__math.html#gga921d656eaf2c4d6800a734a13af021d0a4a4b2c2c77b7e20884440f7e57cfdb98">AV_ROUND_DOWN</a> = 2,
<a class="el" href="group__lavu__math.html#gga921d656eaf2c4d6800a734a13af021d0aa1d28e08e2f8b49b256e056f93038c1a">AV_ROUND_UP</a> = 3,
<br/>
  <a class="el" href="group__lavu__math.html#gga921d656eaf2c4d6800a734a13af021d0aea95b00154ff83c740b46376dfa06e11">AV_ROUND_NEAR_INF</a> = 5,
<a class="el" href="group__lavu__math.html#gga921d656eaf2c4d6800a734a13af021d0a7fcb56631d6898b282d6c78ce6c14a43">AV_ROUND_PASS_MINMAX</a> = 8192
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Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int64_t <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__math.html#ga952147c7a40c48a05c39e918b153ba99">av_gcd</a> (int64_t a, int64_t b)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the greatest common divisor of a and b. <a href="group__lavu__math.html#ga952147c7a40c48a05c39e918b153ba99"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__math.html#ga3daf97178dd1b08b5e916be381cd33e4">av_rescale</a> (int64_t a, int64_t b, int64_t c) <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Rescale a 64-bit integer with rounding to nearest. <a href="group__lavu__math.html#ga3daf97178dd1b08b5e916be381cd33e4"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__math.html#gad686ab94939ed4c65218309e94bdca72">av_rescale_rnd</a> (int64_t a, int64_t b, int64_t c, enum <a class="el" href="group__lavu__math.html#ga921d656eaf2c4d6800a734a13af021d0">AVRounding</a>) <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Rescale a 64-bit integer with specified rounding. <a href="group__lavu__math.html#gad686ab94939ed4c65218309e94bdca72"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__math.html#gaf02994a8bbeaa91d4757df179cbe567f">av_rescale_q</a> (int64_t a, <a class="el" href="structAVRational.html">AVRational</a> bq, <a class="el" href="structAVRational.html">AVRational</a> cq) <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Rescale a 64-bit integer by 2 rational numbers. <a href="group__lavu__math.html#gaf02994a8bbeaa91d4757df179cbe567f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__math.html#gac167a841d10ac919407e77ae35391cf3">av_rescale_q_rnd</a> (int64_t a, <a class="el" href="structAVRational.html">AVRational</a> bq, <a class="el" href="structAVRational.html">AVRational</a> cq, enum <a class="el" href="group__lavu__math.html#ga921d656eaf2c4d6800a734a13af021d0">AVRounding</a>) <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Rescale a 64-bit integer by 2 rational numbers with specified rounding. <a href="group__lavu__math.html#gac167a841d10ac919407e77ae35391cf3"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__math.html#ga151744358fff630942b926e67e67c415">av_compare_ts</a> (int64_t ts_a, <a class="el" href="structAVRational.html">AVRational</a> tb_a, int64_t ts_b, <a class="el" href="structAVRational.html">AVRational</a> tb_b)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Compare 2 timestamps each in its own timebases. <a href="group__lavu__math.html#ga151744358fff630942b926e67e67c415"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__math.html#gaf268a1dde957d04da846e026e2ebe6e8">av_compare_mod</a> (uint64_t a, uint64_t b, uint64_t mod)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Compare 2 integers modulo mod. <a href="group__lavu__math.html#gaf268a1dde957d04da846e026e2ebe6e8"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__math.html#ga29b7c3d60d68ef678ee1f4adc61a25dc">av_rescale_delta</a> (<a class="el" href="structAVRational.html">AVRational</a> in_tb, int64_t in_ts, <a class="el" href="structAVRational.html">AVRational</a> fs_tb, int duration, int64_t *last, <a class="el" href="structAVRational.html">AVRational</a> out_tb)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Rescale a timestamp while preserving known durations. <a href="group__lavu__math.html#ga29b7c3d60d68ef678ee1f4adc61a25dc"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__math.html#ga0c4f9ed3f4102125be7451ad4d848a2f">av_add_stable</a> (<a class="el" href="structAVRational.html">AVRational</a> ts_tb, int64_t ts, <a class="el" href="structAVRational.html">AVRational</a> inc_tb, int64_t inc)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Add a value to a timestamp. <a href="group__lavu__math.html#ga0c4f9ed3f4102125be7451ad4d848a2f"></a><br/></td></tr>
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