<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>StopWatch.cpp Example File | Qt Multimedia 5.12.2</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtmultimedia-index.html">Qt Multimedia</a></td><td ><a href="qtmultimedia-multimedia-spectrum-example.html">Spectrum Example</a></td><td >StopWatch.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtmultimedia-index.html">Qt 5.12.2 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">StopWatch.cpp Example File</h1> <span class="subtitle">multimedia/spectrum/3rdparty/fftreal/stopwatch/StopWatch.cpp</span> <!-- $$$multimedia/spectrum/3rdparty/fftreal/stopwatch/StopWatch.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/***************************************************************************** StopWatch.cpp Copyright (c) 2005 Laurent de Soras --- Legal stuff --- This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *Tab=3***********************************************************************/</span> <span class="preprocessor">#if defined (_MSC_VER)</span> <span class="preprocessor">#pragma warning (1 : 4130) // "'operator' : logical operation on address of string constant"</span> <span class="preprocessor">#pragma warning (1 : 4223) // "nonstandard extension used : non-lvalue array converted to pointer"</span> <span class="preprocessor">#pragma warning (1 : 4705) // "statement has no effect"</span> <span class="preprocessor">#pragma warning (1 : 4706) // "assignment within conditional expression"</span> <span class="preprocessor">#pragma warning (4 : 4786) // "identifier was truncated to '255' characters in the debug information"</span> <span class="preprocessor">#pragma warning (4 : 4800) // "forcing value to bool 'true' or 'false' (performance warning)"</span> <span class="preprocessor">#pragma warning (4 : 4355) // "'this' : used in base member initializer list"</span> <span class="preprocessor">#endif</span> <span class="comment">/*\\\ INCLUDE FILES \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/</span> <span class="preprocessor">#include "StopWatch.h"</span> <span class="preprocessor">#include <cassert></span> <span class="keyword">namespace</span> stopwatch { <span class="comment">/*\\\ PUBLIC \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/</span> StopWatch<span class="operator">::</span>StopWatch () : _ccc () <span class="operator">,</span> _nbr_laps (<span class="number">0</span>) { <span class="comment">// Nothing</span> } <span class="type">double</span> StopWatch<span class="operator">::</span>get_time_total (Int64 nbr_op) <span class="keyword">const</span> { assert (_nbr_laps <span class="operator">></span> <span class="number">0</span>); assert (nbr_op <span class="operator">></span> <span class="number">0</span>); <span class="keyword">return</span> ( <span class="keyword">static_cast</span> <span class="operator"><</span><span class="type">double</span><span class="operator">></span> (_ccc<span class="operator">.</span>get_time_total ()) <span class="operator">/</span> (<span class="keyword">static_cast</span> <span class="operator"><</span><span class="type">double</span><span class="operator">></span> (nbr_op) <span class="operator">*</span> <span class="keyword">static_cast</span> <span class="operator"><</span><span class="type">double</span><span class="operator">></span> (_nbr_laps)) ); } <span class="type">double</span> StopWatch<span class="operator">::</span>get_time_best_lap (Int64 nbr_op) <span class="keyword">const</span> { assert (nbr_op <span class="operator">></span> <span class="number">0</span>); <span class="keyword">return</span> ( <span class="keyword">static_cast</span> <span class="operator"><</span><span class="type">double</span><span class="operator">></span> (_ccc<span class="operator">.</span>get_time_best_lap ()) <span class="operator">/</span> <span class="keyword">static_cast</span> <span class="operator"><</span><span class="type">double</span><span class="operator">></span> (nbr_op) ); } <span class="comment">/*\\\ PROTECTED \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/</span> <span class="comment">/*\\\ PRIVATE \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/</span> } <span class="comment">// namespace stopwatch</span> <span class="comment">/*\\\ EOF \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/</span> </pre> </div> <!-- @@@multimedia/spectrum/3rdparty/fftreal/stopwatch/StopWatch.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. 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