humotion / src / timestamp.cpp @ 51a1f01d
History | View | Annotate | Download (3.154 KB)
| 1 |
/*
|
|---|---|
| 2 |
* This file is part of humotion
|
| 3 |
*
|
| 4 |
* Copyright(c) sschulz <AT> techfak.uni-bielefeld.de
|
| 5 |
* http://opensource.cit-ec.de/projects/humotion
|
| 6 |
*
|
| 7 |
* This file may be licensed under the terms of the
|
| 8 |
* GNU Lesser General Public License Version 3 (the ``LGPL''),
|
| 9 |
* or (at your option) any later version.
|
| 10 |
*
|
| 11 |
* Software distributed under the License is distributed
|
| 12 |
* on an ``AS IS'' basis, WITHOUT WARRANTY OF ANY KIND, either
|
| 13 |
* express or implied. See the LGPL for the specific language
|
| 14 |
* governing rights and limitations.
|
| 15 |
*
|
| 16 |
* You should have received a copy of the LGPL along with this
|
| 17 |
* program. If not, go to http://www.gnu.org/licenses/lgpl.html
|
| 18 |
* or write to the Free Software Foundation, Inc.,
|
| 19 |
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
| 20 |
*
|
| 21 |
* The development of this software was supported by the
|
| 22 |
* Excellence Cluster EXC 277 Cognitive Interaction Technology.
|
| 23 |
* The Excellence Cluster EXC 277 is a grant of the Deutsche
|
| 24 |
* Forschungsgemeinschaft (DFG) in the context of the German
|
| 25 |
* Excellence Initiative.
|
| 26 |
*/
|
| 27 |
|
| 28 |
#include <math.h> |
| 29 |
|
| 30 |
#include "humotion/timestamp.h" |
| 31 |
|
| 32 |
using humotion::Timestamp;
|
| 33 |
|
| 34 |
Timestamp::Timestamp(void) {
|
| 35 |
// init of an empty timestamp will be assigned to the current system time
|
| 36 |
set(now()); |
| 37 |
} |
| 38 |
|
| 39 |
Timestamp::Timestamp(uint32_t _sec, uint32_t _nsec) {
|
| 40 |
set(_sec, _nsec); |
| 41 |
} |
| 42 |
|
| 43 |
Timestamp::Timestamp(double dsec) {
|
| 44 |
double fsec, fnsec;
|
| 45 |
fnsec = modf(dsec , &fsec); |
| 46 |
sec = fsec; |
| 47 |
nsec = fnsec * 1000000000.0; |
| 48 |
} |
| 49 |
|
| 50 |
Timestamp Timestamp::now(void) {
|
| 51 |
struct timespec tp;
|
| 52 |
clock_gettime(CLOCK_REALTIME, &tp); |
| 53 |
return Timestamp(tp.tv_sec, tp.tv_nsec);
|
| 54 |
} |
| 55 |
|
| 56 |
void Timestamp::set(uint32_t _sec, uint32_t _nsec) {
|
| 57 |
sec = _sec; |
| 58 |
nsec = _nsec; |
| 59 |
} |
| 60 |
|
| 61 |
void Timestamp::set(Timestamp a) {
|
| 62 |
set(a.sec, a.nsec); |
| 63 |
} |
| 64 |
|
| 65 |
double Timestamp::to_seconds(void) { |
| 66 |
return sec + (static_cast<double>(nsec))/1000000000.0; |
| 67 |
} |
| 68 |
|
| 69 |
bool Timestamp::operator<= (const Timestamp &cmp) const { |
| 70 |
if (sec < cmp.sec) {
|
| 71 |
return true; |
| 72 |
} else if (sec > cmp.sec) { |
| 73 |
return false; |
| 74 |
} else { // (a.sec == b.sec) |
| 75 |
// seconds are equal, check nsec:
|
| 76 |
return (nsec <= cmp.nsec);
|
| 77 |
} |
| 78 |
} |
| 79 |
|
| 80 |
bool Timestamp::is_null(void) { |
| 81 |
return (sec == 0) && (nsec == 0); |
| 82 |
} |
| 83 |
|
| 84 |
bool Timestamp::operator< (const Timestamp &cmp) const { |
| 85 |
if (sec < cmp.sec) {
|
| 86 |
return true; |
| 87 |
} else if (sec > cmp.sec) { |
| 88 |
return false; |
| 89 |
} else { // (a.sec == b.sec) |
| 90 |
// seconds are equal, check nsec:
|
| 91 |
return (nsec < cmp.nsec);
|
| 92 |
} |
| 93 |
} |
| 94 |
|
| 95 |
bool Timestamp::operator>= (const Timestamp &cmp) const { |
| 96 |
if (sec > cmp.sec) {
|
| 97 |
return true; |
| 98 |
} else if (sec < cmp.sec) { |
| 99 |
return false; |
| 100 |
} else { // (a.sec == b.sec) |
| 101 |
// seconds are equal, check nsec:
|
| 102 |
return (nsec >= cmp.nsec);
|
| 103 |
} |
| 104 |
} |
| 105 |
|
| 106 |
bool Timestamp::operator> (const Timestamp &cmp) const { |
| 107 |
if (sec > cmp.sec) {
|
| 108 |
return true; |
| 109 |
} else if (sec < cmp.sec) { |
| 110 |
return false; |
| 111 |
} else { // (a.sec == b.sec) |
| 112 |
// seconds are equal, check nsec:
|
| 113 |
return (nsec > cmp.nsec);
|
| 114 |
} |
| 115 |
} |
| 116 |
|
| 117 |
bool Timestamp::operator== (const Timestamp &cmp) const { |
| 118 |
return (sec == cmp.sec) && (nsec == cmp.nsec);
|
| 119 |
} |
| 120 |
|
| 121 |
bool Timestamp::operator!= (const Timestamp &cmp) const { |
| 122 |
return !(*this == cmp); |
| 123 |
} |
| 124 |
|