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sortix--sortix/libc/include/timespec.h

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