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<li class="navelem"><a class="el" href="namespaceuhd.html">uhd</a></li><li class="navelem"><a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a></li>  </ul>
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<a href="#pub-methods">Public Member Functions</a> &#124;
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<p><code>#include &lt;<a class="el" href="time__spec_8hpp_source.html">time_spec.hpp</a>&gt;</code></p>
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Inheritance diagram for uhd::time_spec_t:</div>
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a2bd6c4c8ad7209d219c3ca5ae238fb6e"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classuhd_1_1time__spec__t.html#a2bd6c4c8ad7209d219c3ca5ae238fb6e">time_spec_t</a> (double secs=0)</td></tr>
<tr class="separator:a2bd6c4c8ad7209d219c3ca5ae238fb6e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a37e2cc38aa479200989cd3c7c1e4814b"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classuhd_1_1time__spec__t.html#a37e2cc38aa479200989cd3c7c1e4814b">time_spec_t</a> (time_t full_secs, double frac_secs=0)</td></tr>
<tr class="separator:a37e2cc38aa479200989cd3c7c1e4814b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8c8aee70db00810c0914fab28dfdc645"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classuhd_1_1time__spec__t.html#a8c8aee70db00810c0914fab28dfdc645">time_spec_t</a> (time_t full_secs, long tick_count, double tick_rate)</td></tr>
<tr class="separator:a8c8aee70db00810c0914fab28dfdc645"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7477bd07cb0ebe4b0c3aee94f84aa3f0"><td class="memItemLeft" align="right" valign="top">long&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classuhd_1_1time__spec__t.html#a7477bd07cb0ebe4b0c3aee94f84aa3f0">get_tick_count</a> (double tick_rate) const </td></tr>
<tr class="separator:a7477bd07cb0ebe4b0c3aee94f84aa3f0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad75960ba4c788cd30a5d0c8904888da3"><td class="memItemLeft" align="right" valign="top">long long&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classuhd_1_1time__spec__t.html#ad75960ba4c788cd30a5d0c8904888da3">to_ticks</a> (const double tick_rate) const </td></tr>
<tr class="separator:ad75960ba4c788cd30a5d0c8904888da3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a08111dd74652ddf9d209344fd0fb9cf9"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classuhd_1_1time__spec__t.html#a08111dd74652ddf9d209344fd0fb9cf9">get_real_secs</a> (void) const </td></tr>
<tr class="separator:a08111dd74652ddf9d209344fd0fb9cf9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6226790aa8374389cde058fd7d87d05c"><td class="memItemLeft" align="right" valign="top">time_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classuhd_1_1time__spec__t.html#a6226790aa8374389cde058fd7d87d05c">get_full_secs</a> (void) const </td></tr>
<tr class="separator:a6226790aa8374389cde058fd7d87d05c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a76bb46c8415285383ca89786253e32ed"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classuhd_1_1time__spec__t.html#a76bb46c8415285383ca89786253e32ed">get_frac_secs</a> (void) const </td></tr>
<tr class="separator:a76bb46c8415285383ca89786253e32ed"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aee41ca079ce9d090c801c0ce08dd2c36"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classuhd_1_1time__spec__t.html#aee41ca079ce9d090c801c0ce08dd2c36">operator+=</a> (const <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> &amp;)</td></tr>
<tr class="memdesc:aee41ca079ce9d090c801c0ce08dd2c36"><td class="mdescLeft">&#160;</td><td class="mdescRight">Implement addable interface.  <a href="#aee41ca079ce9d090c801c0ce08dd2c36">More...</a><br /></td></tr>
<tr class="separator:aee41ca079ce9d090c801c0ce08dd2c36"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af0a274e20c8576ac8e5b1b2cbf0982d6"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classuhd_1_1time__spec__t.html#af0a274e20c8576ac8e5b1b2cbf0982d6">operator-=</a> (const <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> &amp;)</td></tr>
<tr class="memdesc:af0a274e20c8576ac8e5b1b2cbf0982d6"><td class="mdescLeft">&#160;</td><td class="mdescRight">Implement subtractable interface.  <a href="#af0a274e20c8576ac8e5b1b2cbf0982d6">More...</a><br /></td></tr>
<tr class="separator:af0a274e20c8576ac8e5b1b2cbf0982d6"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr class="memitem:a28bb1e25ad03f333078bea59d21b4854"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classuhd_1_1time__spec__t.html#a28bb1e25ad03f333078bea59d21b4854">get_system_time</a> (void)</td></tr>
<tr class="separator:a28bb1e25ad03f333078bea59d21b4854"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a79cd3047a176bbc734329b599ce29104"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classuhd_1_1time__spec__t.html#a79cd3047a176bbc734329b599ce29104">from_ticks</a> (long long ticks, double tick_rate)</td></tr>
<tr class="separator:a79cd3047a176bbc734329b599ce29104"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>A <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> holds a seconds and a fractional seconds time value. Depending upon usage, the <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> can represent absolute times, relative times, or time differences (between absolute times).</p>
<p>The <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> provides clock-domain independent time storage, but can convert fractional seconds to/from clock-domain specific units.</p>
<p>The fractional seconds are stored as double precision floating point. This gives the fractional seconds enough precision to unambiguously specify a clock-tick/sample-count up to rates of several petahertz. </p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
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          <td class="memname">uhd::time_spec_t::time_spec_t </td>
          <td>(</td>
          <td class="paramtype">double&#160;</td>
          <td class="paramname"><em>secs</em> = <code>0</code></td><td>)</td>
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<p>Create a <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> from a real-valued seconds count. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">secs</td><td>the real-valued seconds count (default = 0) </td></tr>
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          <td class="memname">uhd::time_spec_t::time_spec_t </td>
          <td>(</td>
          <td class="paramtype">time_t&#160;</td>
          <td class="paramname"><em>full_secs</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">double&#160;</td>
          <td class="paramname"><em>frac_secs</em> = <code>0</code>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
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<p>Create a <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> from whole and fractional seconds. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">full_secs</td><td>the whole/integer seconds count </td></tr>
    <tr><td class="paramname">frac_secs</td><td>the fractional seconds count (default = 0) </td></tr>
  </table>
  </dd>
</dl>

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          <td class="memname">uhd::time_spec_t::time_spec_t </td>
          <td>(</td>
          <td class="paramtype">time_t&#160;</td>
          <td class="paramname"><em>full_secs</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">long&#160;</td>
          <td class="paramname"><em>tick_count</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">double&#160;</td>
          <td class="paramname"><em>tick_rate</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>Create a <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> from whole seconds and fractional ticks. Translation from clock-domain specific units. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">full_secs</td><td>the whole/integer seconds count </td></tr>
    <tr><td class="paramname">tick_count</td><td>the fractional seconds tick count </td></tr>
    <tr><td class="paramname">tick_rate</td><td>the number of ticks per second </td></tr>
  </table>
  </dd>
</dl>

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<h2 class="groupheader">Member Function Documentation</h2>
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          <td class="memname">static <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> uhd::time_spec_t::from_ticks </td>
          <td>(</td>
          <td class="paramtype">long long&#160;</td>
          <td class="paramname"><em>ticks</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">double&#160;</td>
          <td class="paramname"><em>tick_rate</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span>  </td>
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<p>Create a <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> from a 64-bit tick count. Translation from clock-domain specific units. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">ticks</td><td>an integer count of ticks </td></tr>
    <tr><td class="paramname">tick_rate</td><td>the number of ticks per second </td></tr>
  </table>
  </dd>
</dl>

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          <td class="memname"><a class="el" href="config_8hpp.html#a8b9b549161081d54c2161046649a0323">UHD_INLINE</a> double uhd::time_spec_t::get_frac_secs </td>
          <td>(</td>
          <td class="paramtype">void&#160;</td>
          <td class="paramname"></td><td>)</td>
          <td> const</td>
        </tr>
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<p>Get the fractional part of the time in seconds. </p><dl class="section return"><dt>Returns</dt><dd>the fractional seconds </dd></dl>

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          <td class="memname"><a class="el" href="config_8hpp.html#a8b9b549161081d54c2161046649a0323">UHD_INLINE</a> time_t uhd::time_spec_t::get_full_secs </td>
          <td>(</td>
          <td class="paramtype">void&#160;</td>
          <td class="paramname"></td><td>)</td>
          <td> const</td>
        </tr>
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<p>Get the whole/integer part of the time in seconds. </p><dl class="section return"><dt>Returns</dt><dd>the whole/integer seconds </dd></dl>

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          <td class="memname">double uhd::time_spec_t::get_real_secs </td>
          <td>(</td>
          <td class="paramtype">void&#160;</td>
          <td class="paramname"></td><td>)</td>
          <td> const</td>
        </tr>
      </table>
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<p>Get the time as a real-valued seconds count. Note: If this <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> represents an absolute time, the precision of the fractional seconds may be lost. </p><dl class="section return"><dt>Returns</dt><dd>the real-valued seconds </dd></dl>

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          <td class="memname">static <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> uhd::time_spec_t::get_system_time </td>
          <td>(</td>
          <td class="paramtype">void&#160;</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
        </tr>
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<p>Get the system time in <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> format. Uses the highest precision clock available. </p><dl class="section return"><dt>Returns</dt><dd>the system time as a <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> </dd></dl>

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          <td class="memname">long uhd::time_spec_t::get_tick_count </td>
          <td>(</td>
          <td class="paramtype">double&#160;</td>
          <td class="paramname"><em>tick_rate</em></td><td>)</td>
          <td> const</td>
        </tr>
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<p>Convert the fractional seconds to clock ticks. Translation into clock-domain specific units. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">tick_rate</td><td>the number of ticks per second </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the fractional seconds tick count </dd></dl>

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          <td class="memname"><a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a>&amp; uhd::time_spec_t::operator+= </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> &amp;&#160;</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
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<p>Implement addable interface. </p>

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          <td class="memname"><a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a>&amp; uhd::time_spec_t::operator-= </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="classuhd_1_1time__spec__t.html">time_spec_t</a> &amp;&#160;</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
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<p>Implement subtractable interface. </p>

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          <td class="memname">long long uhd::time_spec_t::to_ticks </td>
          <td>(</td>
          <td class="paramtype">const double&#160;</td>
          <td class="paramname"><em>tick_rate</em></td><td>)</td>
          <td> const</td>
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<p>Convert the time spec into a 64-bit tick count. Translation into clock-domain specific units. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">tick_rate</td><td>the number of ticks per second </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>an integer number of ticks </dd></dl>

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<hr/>The documentation for this class was generated from the following file:<ul>
<li>include/uhd/types/<a class="el" href="time__spec_8hpp_source.html">time_spec.hpp</a></li>
</ul>
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