/* System-dependent timing definitions.  Generic version.

   Copyright (C) 1996-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU 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 2.1 of the License, or (at your option) any later version.

   The GNU 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 GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

/*

 * Never include this file directly; use <time.h> instead.

 */

#ifndef _BITS_TIME_H

#define _BITS_TIME_H	1

#include <bits/types.h>

/* ISO/IEC 9899:1999 7.23.1: Components of time

   The macro `CLOCKS_PER_SEC' is an expression with type `clock_t' that is

   the number per second of the value returned by the `clock' function.  */

/* CAE XSH, Issue 4, Version 2: <time.h>

   The value of CLOCKS_PER_SEC is required to be 1 million on all

   XSI-conformant systems. */

#define CLOCKS_PER_SEC  ((__clock_t) 1000000)

#if (!defined __STRICT_ANSI__ || defined __USE_POSIX) \

   && !defined __USE_XOPEN2K

/* Even though CLOCKS_PER_SEC has such a strange value CLK_TCK

   presents the real value for clock ticks per second for the system.  */

extern long int __sysconf (int);

# define CLK_TCK ((__clock_t) __sysconf (2))	/* 2 is _SC_CLK_TCK */

#endif

#ifdef __USE_POSIX199309

/* Identifier for system-wide realtime clock.  */

# define CLOCK_REALTIME			0

/* Monotonic system-wide clock.  */

# define CLOCK_MONOTONIC		1

/* High-resolution timer from the CPU.  */

# define CLOCK_PROCESS_CPUTIME_ID	2

/* Thread-specific CPU-time clock.  */

# define CLOCK_THREAD_CPUTIME_ID	3

/* Monotonic system-wide clock, not adjusted for frequency scaling.  */

# define CLOCK_MONOTONIC_RAW		4

/* Identifier for system-wide realtime clock, updated only on ticks.  */

# define CLOCK_REALTIME_COARSE		5

/* Monotonic system-wide clock, updated only on ticks.  */

# define CLOCK_MONOTONIC_COARSE		6

/* Flag to indicate time is absolute.  */

# define TIMER_ABSTIME			1

#endif

#endif	/* bits/time.h */