humotion / src / timestamp.cpp @ 95dd1012
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/*
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* This file is part of humotion
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*
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* Copyright(c) sschulz <AT> techfak.uni-bielefeld.de
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* http://opensource.cit-ec.de/projects/humotion
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*
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* This file may be licensed under the terms of the
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* GNU Lesser General Public License Version 3 (the ``LGPL''),
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* or (at your option) any later version.
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*
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* Software distributed under the License is distributed
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* on an ``AS IS'' basis, WITHOUT WARRANTY OF ANY KIND, either
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* express or implied. See the LGPL for the specific language
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* governing rights and limitations.
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*
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* You should have received a copy of the LGPL along with this
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* program. If not, go to http://www.gnu.org/licenses/lgpl.html
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* or write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The development of this software was supported by the
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* Excellence Cluster EXC 277 Cognitive Interaction Technology.
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* The Excellence Cluster EXC 277 is a grant of the Deutsche
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* Forschungsgemeinschaft (DFG) in the context of the German
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* Excellence Initiative.
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*/
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#include <math.h> |
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#include "humotion/timestamp.h" |
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using humotion::Timestamp;
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Timestamp::Timestamp(void) {
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// init of an empty timestamp will be assigned to the current system time
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set(now()); |
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} |
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Timestamp::Timestamp(uint32_t _sec, uint32_t _nsec) {
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set(_sec, _nsec); |
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} |
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Timestamp::Timestamp(double dsec) {
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double fsec, fnsec;
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fnsec = modf(dsec , &fsec); |
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sec = fsec; |
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nsec = fnsec * 1000000000.0; |
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} |
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Timestamp Timestamp::now(void) {
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struct timespec tp;
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clock_gettime(CLOCK_REALTIME, &tp); |
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return Timestamp(tp.tv_sec, tp.tv_nsec);
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} |
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void Timestamp::set(uint32_t _sec, uint32_t _nsec) {
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sec = _sec; |
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nsec = _nsec; |
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} |
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void Timestamp::set(Timestamp a) {
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set(a.sec, a.nsec); |
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} |
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double Timestamp::to_seconds(void) { |
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return sec + (static_cast<double>(nsec))/1000000000.0; |
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} |
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bool Timestamp::operator<= (const Timestamp &cmp) const { |
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if (sec < cmp.sec) {
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return true; |
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} else if (sec > cmp.sec) { |
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return false; |
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} else { // (a.sec == b.sec) |
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// seconds are equal, check nsec:
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return (nsec <= cmp.nsec);
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} |
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} |
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bool Timestamp::is_null(void) { |
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return (sec == 0) && (nsec == 0); |
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} |
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bool Timestamp::operator< (const Timestamp &cmp) const { |
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if (sec < cmp.sec) {
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return true; |
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} else if (sec > cmp.sec) { |
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return false; |
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} else { // (a.sec == b.sec) |
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// seconds are equal, check nsec:
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return (nsec < cmp.nsec);
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} |
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} |
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bool Timestamp::operator>= (const Timestamp &cmp) const { |
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if (sec > cmp.sec) {
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return true; |
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} else if (sec < cmp.sec) { |
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return false; |
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} else { // (a.sec == b.sec) |
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// seconds are equal, check nsec:
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return (nsec >= cmp.nsec);
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} |
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} |
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bool Timestamp::operator> (const Timestamp &cmp) const { |
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if (sec > cmp.sec) {
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return true; |
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} else if (sec < cmp.sec) { |
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return false; |
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} else { // (a.sec == b.sec) |
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// seconds are equal, check nsec:
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return (nsec > cmp.nsec);
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} |
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} |
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bool Timestamp::operator== (const Timestamp &cmp) const { |
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return (sec == cmp.sec) && (nsec == cmp.nsec);
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} |
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bool Timestamp::operator!= (const Timestamp &cmp) const { |
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return !(*this == cmp); |
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} |
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