Project: engagement_recognition License: BSD Dependencies:
Used by:
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engagement_recognition/src/recognition/statistics/duration.cppGo to the documentation of this file.00001 /* 00002 * Software License Agreement (BSD License) 00003 * 00004 * Copyright (c) 2010, Worcester Polytechnic Institute 00005 * All rights reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions 00009 * are met: 00010 * 00011 * * Redistributions of source code must retain the above copyright 00012 * notice, this list of conditions and the following disclaimer. 00013 * * Redistributions in binary form must reproduce the above 00014 * copyright notice, this list of conditions and the following 00015 * disclaimer in the documentation and/or other materials provided 00016 * with the distribution. 00017 * * Neither the name of Worcester Polytechnic Institute. nor the names 00018 * of its contributors may be used to endorse or promote products 00019 * derived from this software without specific prior written permission. 00020 * 00021 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00022 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00023 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00024 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 00025 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00026 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00027 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00028 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00029 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00030 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 00031 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00032 * POSSIBILITY OF SUCH DAMAGE. 00033 */ 00034 // @author Brett Ponsler (bponsler (at) wpi (dot) edu) 00035 #include "duration.h" 00036 00037 Duration::Duration() 00038 { 00039 // Reset the duration 00040 this->reset(); 00041 } 00042 00043 void Duration::reset() 00044 { 00045 // The total duration, the number of events 00046 // and the max are all set to zero 00047 this->total_ = 0; 00048 this->number_ = 0; 00049 this->max_ = 0; 00050 } 00051 00052 void Duration::event(unsigned long duration) 00053 { 00054 // An event has occurred, add the duration and increase 00055 // the count of events 00056 this->total_ += duration; 00057 this->number_++; 00058 00059 // If this is a new max duration, keep 00060 // track of it 00061 if (this->max_ < duration) 00062 this->max_ = duration; 00063 } 00064 00065 unsigned long Duration::getMean() 00066 { 00067 // Make sure events have actually occurred 00068 if (this->number_ > 0) 00069 { 00070 // Return the total duration divided by the number of events 00071 return (this->total_ / this->number_); 00072 } 00073 00074 // Return zero in the event that there no events have occurred 00075 return 0; 00076 } 00077 00078 unsigned long Duration::getMax() 00079 { 00080 return this->max_; 00081 } |