wipal: include/wipal/tool/timeval.hxx Source File

00001 /*
00002  * WiPal - A library and a set of tools to manipulate wireless traces.
00003  * Copyright (C) 2009  Universite Pierre et Marie Curie - Paris 6
00004  *
00005  * This program is free software; you can redistribute it and/or modify
00006  * it under the terms of the GNU General Public License as published by
00007  * the Free Software Foundation; either version 2 of the License, or
00008  * (at your option) any later version.
00009  *
00010  * This program is distributed in the hope that it will be useful,
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013  * GNU General Public License for more details.
00014  *
00015  * You should have received a copy of the GNU General Public License
00016  * along with this program; if not, write to the Free Software
00017  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
00018  * MA  02110-1301  USA
00019  *
00020  * Author: Thomas Claveirole <thomas.claveirole@lip6.fr>
00021  */
00022 #ifndef TOOL_TIMEVAL_HXX_
00023 # define TOOL_TIMEVAL_HXX_
00024 
00025 # include <wipal/tool/timeval.hh>
00026 
00027 namespace wpl
00028 {
00029 
00030   namespace tool
00031   {
00032 
00033     inline
00034     bool
00035     eq_timeval(const struct timeval&    lhs,
00036                const struct timeval&    rhs,
00037                const unsigned           prec)
00038     {
00039       struct timeval    dt;
00040 
00041       if (timercmp(&lhs, &rhs, <))
00042         timersub(&rhs, &lhs, &dt);
00043       else
00044         timersub(&lhs, &rhs, &dt);
00045 
00046       return 0 == dt.tv_sec and unsigned (dt.tv_usec) <= prec;
00047     }
00048 
00049   } // End of namespace wpl::tool.
00050 
00051 } // End of namespace wpl.
00052 
00053 #endif // ! TOOL_TIMEVAL_HXX_