N-sim
Emulation and simulation of
Wireless Sensor Networks



   Home


   Project Page


   Download


   CVS



   Installation


   Configuration


   Plug-ins




 Hosted by
SourceForge.net Logo

/home/brennan/n-sim/OrbisQuartus/shared/test.h

Go to the documentation of this file.
00001 
00014 /*
00015  * Copyright 2007. Los Alamos National Security, LLC. This material
00016  * was produced under U.S. Government contract DE-AC52-06NA25396 for
00017  * Los Alamos National Laboratory (LANL), which is operated by Los
00018  * Alamos National Security, LLC, for the Department of Energy. The
00019  * U.S. Government has rights to use, reproduce, and distribute this
00020  * software. NEITHER THE GOVERNMENT NOR LOS ALAMOS NATIONAL SECURITY,
00021  * LLC, MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR ASSUMES ANY LEGAL
00022  * LIABILITY FOR THE USE OF THIS SOFTWARE. If software is modified to
00023  * produce derivative works, such modified software should be clearly
00024  * marked, so as not to confuse it with the version available from LANL.
00025  *
00026  * Additionally, this program is free software; you can redistribute
00027  * it and/or modify it under the terms of the GNU General Public
00028  * License as published by the Free Software Foundation; version 2 of
00029  * the License. Accordingly, this program is distributed in the hope
00030  * it will be useful, but WITHOUT ANY WARRANTY; without even the
00031  * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00032  * PURPOSE. See the GNU General Public License for more details.
00033  */
00034 
00035 #include <stdio.h>
00036 #include <stdlib.h>
00037 #include <math.h>
00038 #include <sys/time.h>
00039 #include <errno.h>
00040 
00041 
00042 struct timeval average_time(struct timeval begin[], 
00043                             struct timeval end[], int size)
00044 {
00045         int i;
00046         long long secs = 0, usecs = 0;
00047         struct timeval avg;
00048 
00049         for (i = 0; i < size; i++) {
00050                 long sec_diff, usec_diff;
00051                 sec_diff = end[i].tv_sec - begin[i].tv_sec;
00052                 usec_diff = end[i].tv_usec - begin[i].tv_usec;
00053                 if (usec_diff < 0) {
00054                         sec_diff--;
00055                         usec_diff = 1000000 + usec_diff;
00056                 }
00057                 secs += sec_diff;
00058                 usecs += usec_diff;
00059         }
00060 
00061         avg.tv_sec = secs / size;
00062         avg.tv_usec = usecs / size;
00063         return avg;
00064 }


© 2007, Los Alamos National Security, LLC.