humotion / src / timestamp.cpp @ e71325d1
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| 1 | 0c8d22a5 | sschulz | /*
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| 2 | * This file is part of humotion
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| 3 | *
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| 4 | * Copyright(c) sschulz <AT> techfak.uni-bielefeld.de
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| 5 | * http://opensource.cit-ec.de/projects/humotion
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| 6 | *
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| 7 | * This file may be licensed under the terms of the
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| 8 | * GNU Lesser General Public License Version 3 (the ``LGPL''),
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| 9 | * or (at your option) any later version.
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| 10 | *
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| 11 | * Software distributed under the License is distributed
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| 12 | * on an ``AS IS'' basis, WITHOUT WARRANTY OF ANY KIND, either
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| 13 | * express or implied. See the LGPL for the specific language
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| 14 | * governing rights and limitations.
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| 15 | *
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| 16 | * You should have received a copy of the LGPL along with this
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| 17 | * program. If not, go to http://www.gnu.org/licenses/lgpl.html
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| 18 | * or write to the Free Software Foundation, Inc.,
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| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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| 20 | *
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| 21 | * The development of this software was supported by the
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| 22 | * Excellence Cluster EXC 277 Cognitive Interaction Technology.
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| 23 | * The Excellence Cluster EXC 277 is a grant of the Deutsche
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| 24 | * Forschungsgemeinschaft (DFG) in the context of the German
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| 25 | * Excellence Initiative.
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| 26 | */
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| 27 | |||
| 28 | 8db9ba4f | Simon Schulz | #include <math.h> |
| 29 | 32327f15 | Simon Schulz | |
| 30 | 0c8d22a5 | sschulz | #include "humotion/timestamp.h" |
| 31 | |||
| 32 | using humotion::Timestamp;
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| 33 | 32327f15 | Simon Schulz | |
| 34 | 0c8d22a5 | sschulz | Timestamp::Timestamp(void) {
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| 35 | // init of an empty timestamp will be assigned to the current system time
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| 36 | 8db9ba4f | Simon Schulz | set(now()); |
| 37 | 32327f15 | Simon Schulz | } |
| 38 | |||
| 39 | 0c8d22a5 | sschulz | Timestamp::Timestamp(uint32_t _sec, uint32_t _nsec) {
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| 40 | 32327f15 | Simon Schulz | set(_sec, _nsec); |
| 41 | } |
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| 42 | |||
| 43 | 0c8d22a5 | sschulz | Timestamp::Timestamp(double dsec) {
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| 44 | 8db9ba4f | Simon Schulz | double fsec, fnsec;
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| 45 | 0c8d22a5 | sschulz | fnsec = modf(dsec , &fsec); |
| 46 | 8db9ba4f | Simon Schulz | sec = fsec; |
| 47 | nsec = fnsec * 1000000000.0; |
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| 48 | } |
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| 49 | |||
| 50 | 0c8d22a5 | sschulz | Timestamp Timestamp::now(void) {
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| 51 | 8db9ba4f | Simon Schulz | struct timespec tp;
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| 52 | clock_gettime(CLOCK_REALTIME, &tp); |
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| 53 | e19ad051 | Simon Schulz | return Timestamp(tp.tv_sec, tp.tv_nsec);
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| 54 | 8db9ba4f | Simon Schulz | } |
| 55 | |||
| 56 | 0c8d22a5 | sschulz | void Timestamp::set(uint32_t _sec, uint32_t _nsec) {
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| 57 | 32327f15 | Simon Schulz | sec = _sec; |
| 58 | nsec = _nsec; |
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| 59 | } |
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| 60 | |||
| 61 | 0c8d22a5 | sschulz | void Timestamp::set(Timestamp a) {
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| 62 | 8db9ba4f | Simon Schulz | set(a.sec, a.nsec); |
| 63 | } |
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| 64 | |||
| 65 | 0c8d22a5 | sschulz | double Timestamp::to_seconds(void) { |
| 66 | return sec + (static_cast<double>(nsec))/1000000000.0; |
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| 67 | 32327f15 | Simon Schulz | } |
| 68 | |||
| 69 | 0c8d22a5 | sschulz | bool Timestamp::operator<= (const Timestamp &cmp) const { |
| 70 | if (sec < cmp.sec) {
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| 71 | 32327f15 | Simon Schulz | return true; |
| 72 | 0c8d22a5 | sschulz | } else if (sec > cmp.sec) { |
| 73 | 32327f15 | Simon Schulz | return false; |
| 74 | 0c8d22a5 | sschulz | } else { // (a.sec == b.sec) |
| 75 | // seconds are equal, check nsec:
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| 76 | 32327f15 | Simon Schulz | return (nsec <= cmp.nsec);
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| 77 | } |
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| 78 | } |
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| 79 | |||
| 80 | 0c8d22a5 | sschulz | bool Timestamp::is_null(void) { |
| 81 | caf7373f | Simon Schulz | return (sec == 0) && (nsec == 0); |
| 82 | } |
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| 83 | |||
| 84 | 0c8d22a5 | sschulz | bool Timestamp::operator< (const Timestamp &cmp) const { |
| 85 | if (sec < cmp.sec) {
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| 86 | 32327f15 | Simon Schulz | return true; |
| 87 | 0c8d22a5 | sschulz | } else if (sec > cmp.sec) { |
| 88 | 32327f15 | Simon Schulz | return false; |
| 89 | 0c8d22a5 | sschulz | } else { // (a.sec == b.sec) |
| 90 | // seconds are equal, check nsec:
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| 91 | 32327f15 | Simon Schulz | return (nsec < cmp.nsec);
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| 92 | } |
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| 93 | } |
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| 94 | |||
| 95 | 0c8d22a5 | sschulz | bool Timestamp::operator>= (const Timestamp &cmp) const { |
| 96 | if (sec > cmp.sec) {
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| 97 | 32327f15 | Simon Schulz | return true; |
| 98 | 0c8d22a5 | sschulz | } else if (sec < cmp.sec) { |
| 99 | 32327f15 | Simon Schulz | return false; |
| 100 | 0c8d22a5 | sschulz | } else { // (a.sec == b.sec) |
| 101 | // seconds are equal, check nsec:
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| 102 | 32327f15 | Simon Schulz | return (nsec >= cmp.nsec);
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| 103 | } |
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| 104 | } |
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| 105 | |||
| 106 | 0c8d22a5 | sschulz | bool Timestamp::operator> (const Timestamp &cmp) const { |
| 107 | if (sec > cmp.sec) {
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| 108 | 32327f15 | Simon Schulz | return true; |
| 109 | 0c8d22a5 | sschulz | } else if (sec < cmp.sec) { |
| 110 | 32327f15 | Simon Schulz | return false; |
| 111 | 0c8d22a5 | sschulz | } else { // (a.sec == b.sec) |
| 112 | // seconds are equal, check nsec:
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| 113 | 32327f15 | Simon Schulz | return (nsec > cmp.nsec);
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| 114 | } |
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| 115 | } |
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| 116 | |||
| 117 | 0c8d22a5 | sschulz | bool Timestamp::operator== (const Timestamp &cmp) const { |
| 118 | 32327f15 | Simon Schulz | return (sec == cmp.sec) && (nsec == cmp.nsec);
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| 119 | } |
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| 120 | |||
| 121 | 0c8d22a5 | sschulz | bool Timestamp::operator!= (const Timestamp &cmp) const { |
| 122 | 32327f15 | Simon Schulz | return !(*this == cmp); |
| 123 | } |