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83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
10 years ago
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/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2014 The libLTE Developers. See the
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* COPYRIGHT file at the top-level directory of this distribution.
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*
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* \section LICENSE
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*
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* This file is part of the libLTE library.
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*
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* libLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* libLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* A copy of the GNU Lesser General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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10 years ago
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#include "srslte/phy/common/timestamp.h"
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10 years ago
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#include "math.h"
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int timestamp_init(timestamp_t *t, time_t full_secs, double frac_secs){
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int ret = LIBLTE_ERROR;
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if(t != NULL && frac_secs >= 0.0){
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t->full_secs = full_secs;
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t->frac_secs = frac_secs;
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ret = LIBLTE_SUCCESS;
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}
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return ret;
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}
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int timestamp_copy(timestamp_t *dest, timestamp_t *src){
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int ret = LIBLTE_ERROR;
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if(dest != NULL && src != NULL){
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dest->full_secs = src->full_secs;
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dest->frac_secs = src->frac_secs;
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ret = LIBLTE_SUCCESS;
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}
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return ret;
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}
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int timestamp_add(timestamp_t *t, time_t full_secs, double frac_secs){
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int ret = LIBLTE_ERROR;
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if(t != NULL && frac_secs >= 0.0){
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t->frac_secs += frac_secs;
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t->full_secs += full_secs;
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double r = floor(t->frac_secs);
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t->full_secs += r;
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t->frac_secs -= r;
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ret = LIBLTE_SUCCESS;
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}
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return ret;
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}
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int timestamp_sub(timestamp_t *t, time_t full_secs, double frac_secs){
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int ret = LIBLTE_ERROR;
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if(t != NULL && frac_secs >= 0.0){
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t->frac_secs -= frac_secs;
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t->full_secs -= full_secs;
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if(t->frac_secs < 0){
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t->frac_secs = 1-t->frac_secs;
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t->full_secs--;
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}
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if(t->full_secs < 0)
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return LIBLTE_ERROR;
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ret = LIBLTE_SUCCESS;
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}
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return ret;
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}
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double timestamp_real(timestamp_t *t){
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return t->frac_secs + t->full_secs;
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}
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