Time.hpp
Go to the documentation of this file.00001 /*************************************************************************** 00002 tag: Peter Soetens Wed Jan 18 14:11:39 CET 2006 Time.hpp 00003 00004 Time.hpp - description 00005 ------------------- 00006 begin : Wed January 18 2006 00007 copyright : (C) 2006 Peter Soetens 00008 email : peter.soetens@mech.kuleuven.be 00009 00010 *************************************************************************** 00011 * This library is free software; you can redistribute it and/or * 00012 * modify it under the terms of the GNU General Public * 00013 * License as published by the Free Software Foundation; * 00014 * version 2 of the License. * 00015 * * 00016 * As a special exception, you may use this file as part of a free * 00017 * software library without restriction. Specifically, if other files * 00018 * instantiate templates or use macros or inline functions from this * 00019 * file, or you compile this file and link it with other files to * 00020 * produce an executable, this file does not by itself cause the * 00021 * resulting executable to be covered by the GNU General Public * 00022 * License. This exception does not however invalidate any other * 00023 * reasons why the executable file might be covered by the GNU General * 00024 * Public License. * 00025 * * 00026 * This library is distributed in the hope that it will be useful, * 00027 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00028 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * 00029 * Lesser General Public License for more details. * 00030 * * 00031 * You should have received a copy of the GNU General Public * 00032 * License along with this library; if not, write to the Free Software * 00033 * Foundation, Inc., 59 Temple Place, * 00034 * Suite 330, Boston, MA 02111-1307 USA * 00035 * * 00036 ***************************************************************************/ 00037 00038 00039 #ifndef OS_TIME_HPP 00040 #define OS_TIME_HPP 00041 00042 #include <cmath> 00043 00044 //rint function support implemented for MSVC 00045 #include "rint.h" 00046 00047 namespace RTT 00048 { 00049 00053 typedef double Seconds; 00057 typedef long secs; 00061 typedef long msecs; 00065 typedef long usecs; 00069 typedef long long nsecs; 00073 typedef long long psecs; 00074 00075 const long MSECS_IN_SECS = 1000; 00076 const long USECS_IN_SECS = 1000 * MSECS_IN_SECS; 00077 const long NSECS_IN_SECS = 1000 * USECS_IN_SECS; 00078 const long long PSECS_IN_SECS = 1000LL * NSECS_IN_SECS; 00079 00080 const long USECS_IN_MSECS = 1000; 00081 const long NSECS_IN_MSECS = 1000 * USECS_IN_MSECS; 00082 const long PSECS_IN_MSECS = 1000 * NSECS_IN_MSECS; 00083 00084 const long NSECS_IN_USECS = 1000; 00085 const long PSECS_IN_USECS = 1000 * NSECS_IN_USECS; 00086 00087 const long PSECS_IN_NSECS = 1000; 00088 00089 inline msecs secs_to_msecs(const secs s) { return s * MSECS_IN_SECS; } 00090 inline usecs secs_to_usecs(const secs s) { return s * USECS_IN_SECS; } 00091 inline nsecs secs_to_nsecs(const secs s) { return s * NSECS_IN_SECS; } 00092 inline psecs secs_to_psecs(const secs s) { return s * PSECS_IN_SECS; } 00093 00094 inline usecs msecs_to_usecs(const msecs ms) { return ms * USECS_IN_MSECS; } 00095 inline nsecs msecs_to_nsecs(const msecs ms) { return ms * NSECS_IN_MSECS; } 00096 inline psecs msecs_to_psecs(const msecs ms) { return ms * PSECS_IN_MSECS; } 00097 00098 inline nsecs usecs_to_nsecs(const usecs us) { return us * NSECS_IN_USECS; } 00099 inline psecs usecs_to_psecs(const usecs us) { return us * PSECS_IN_USECS; } 00100 00101 inline psecs nsecs_to_psecs(const nsecs ns) { return ns * PSECS_IN_NSECS; } 00102 00103 inline nsecs Seconds_to_nsecs(const Seconds s) { return nsecs( rint( s * secs_to_nsecs(1) ) ); } 00104 inline Seconds nsecs_to_Seconds(const nsecs ns) { return Seconds( ns ) / Seconds(NSECS_IN_SECS); } 00105 inline psecs Seconds_to_psecs(const Seconds s) { return psecs( rint( s * secs_to_psecs(1) ) ); } 00106 inline Seconds psecs_to_Seconds(const psecs ps) { return Seconds( ps ) / Seconds(PSECS_IN_SECS); } 00107 } 00108 00109 #endif