118 lines
3.0 KiB
C
118 lines
3.0 KiB
C
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013.
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This file is part of the Sortix C Library.
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The Sortix C Library 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 published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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timespec.h
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Utility functions for manipulation of struct timespec.
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*******************************************************************************/
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#ifndef INCLUDE_TIMESPEC_H
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#define INCLUDE_TIMESPEC_H
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#include <sys/cdefs.h>
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#include <sys/__/types.h>
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#if !defined(__cplusplus)
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#include <stdbool.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef __time_t_defined
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#define __time_t_defined
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typedef __time_t time_t;
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#endif
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#include <sortix/timespec.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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static __inline bool timespec_eq(struct timespec a, struct timespec b)
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{
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return a.tv_sec == b.tv_sec && a.tv_nsec == b.tv_nsec;
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}
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static __inline bool timespec_neq(struct timespec a, struct timespec b)
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{
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return a.tv_sec != b.tv_sec || a.tv_nsec != b.tv_nsec;
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}
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static __inline bool timespec_lt(struct timespec a, struct timespec b)
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{
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return a.tv_sec < b.tv_sec ||
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(a.tv_sec == b.tv_sec && a.tv_nsec < b.tv_nsec);
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}
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static __inline bool timespec_le(struct timespec a, struct timespec b)
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{
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return a.tv_sec < b.tv_sec ||
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(a.tv_sec == b.tv_sec && a.tv_nsec <= b.tv_nsec);
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}
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static __inline bool timespec_gt(struct timespec a, struct timespec b)
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{
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return a.tv_sec > b.tv_sec ||
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(a.tv_sec == b.tv_sec && a.tv_nsec > b.tv_nsec);
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}
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static __inline bool timespec_ge(struct timespec a, struct timespec b)
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{
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return a.tv_sec > b.tv_sec ||
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(a.tv_sec == b.tv_sec && a.tv_nsec >= b.tv_nsec);
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}
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static __inline struct timespec timespec_make(time_t sec, long nsec)
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{
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struct timespec ret;
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ret.tv_sec = sec;
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ret.tv_nsec = nsec;
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return ret;
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}
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static __inline struct timespec timespec_neg(struct timespec t)
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{
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if ( t.tv_nsec )
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return timespec_make(-t.tv_sec - 1, 1000000000 - t.tv_nsec);
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return timespec_make(-t.tv_sec, 0);
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}
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static __inline struct timespec timespec_nul(void)
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{
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return timespec_make(0, 0);
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}
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struct timespec timespec_canonalize(struct timespec t);
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struct timespec timespec_add(struct timespec a, struct timespec b);
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struct timespec timespec_sub(struct timespec a, struct timespec b);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif
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