/*
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* Copyright (C) 2013 Philippe Gerum <rpm@xenomai.org>.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*/
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#include "boilerplate/time.h"
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void timespec_sub(struct timespec *__restrict r,
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const struct timespec *__restrict t1,
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const struct timespec *__restrict t2)
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{
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r->tv_sec = t1->tv_sec - t2->tv_sec;
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r->tv_nsec = t1->tv_nsec - t2->tv_nsec;
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if (r->tv_nsec < 0) {
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r->tv_sec--;
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r->tv_nsec += 1000000000;
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}
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}
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void timespec_subs(struct timespec *__restrict r,
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const struct timespec *__restrict t1,
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sticks_t t2)
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{
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sticks_t s, rem;
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s = t2 / 1000000000;
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rem = t2 - s * 1000000000;
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r->tv_sec = t1->tv_sec - s;
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r->tv_nsec = t1->tv_nsec - rem;
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if (r->tv_nsec < 0) {
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r->tv_sec--;
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r->tv_nsec += 1000000000;
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}
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}
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void timespec_add(struct timespec *__restrict r,
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const struct timespec *__restrict t1,
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const struct timespec *__restrict t2)
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{
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r->tv_sec = t1->tv_sec + t2->tv_sec;
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r->tv_nsec = t1->tv_nsec + t2->tv_nsec;
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if (r->tv_nsec >= 1000000000) {
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r->tv_sec++;
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r->tv_nsec -= 1000000000;
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}
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}
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void timespec_adds(struct timespec *__restrict r,
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const struct timespec *__restrict t1,
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sticks_t t2)
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{
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sticks_t s, rem;
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s = t2 / 1000000000;
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rem = t2 - s * 1000000000;
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r->tv_sec = t1->tv_sec + s;
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r->tv_nsec = t1->tv_nsec + rem;
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if (r->tv_nsec >= 1000000000) {
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r->tv_sec++;
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r->tv_nsec -= 1000000000;
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}
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}
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void timespec_sets(struct timespec *__restrict r,
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ticks_t ns)
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{
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r->tv_sec = ns / 1000000000UL;
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r->tv_nsec = ns - r->tv_sec * 1000000000UL;
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if (r->tv_nsec >= 1000000000) {
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r->tv_sec++;
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r->tv_nsec -= 1000000000;
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}
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}
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