c79d2067c7
Allow using these functions also outside sched, where systick related calculations are performed Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
/****************************************************************************
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* libs/libc/sched/clock_timespec_add.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <time.h>
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#include <nuttx/clock.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: clock_timespec_add
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*
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* Description:
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* Add timespec ts1 to to2 and return the result in ts3
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*
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* Input Parameters:
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* ts1 and ts2: The two timespecs to be added
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* ts3: The location to return the result (may be ts1 or ts2)
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void clock_timespec_add(FAR const struct timespec *ts1,
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FAR const struct timespec *ts2,
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FAR struct timespec *ts3)
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{
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time_t sec = ts1->tv_sec + ts2->tv_sec;
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long nsec = ts1->tv_nsec + ts2->tv_nsec;
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if (nsec >= NSEC_PER_SEC)
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{
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nsec -= NSEC_PER_SEC;
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sec++;
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}
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ts3->tv_sec = sec;
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ts3->tv_nsec = nsec;
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}
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