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The C and C++ Include Header Files

/usr/include/x86_64-linux-gnu/sys/timex.h


$ cat -n /usr/include/x86_64-linux-gnu/sys/timex.h

     1	/* Copyright (C) 1995-2024 Free Software Foundation, Inc.
     2	   This file is part of the GNU C Library.
     3	
     4	   The GNU C Library is free software; you can redistribute it and/or
     5	   modify it under the terms of the GNU Lesser General Public
     6	   License as published by the Free Software Foundation; either
     7	   version 2.1 of the License, or (at your option) any later version.
     8	
     9	   The GNU C Library is distributed in the hope that it will be useful,
    10	   but WITHOUT ANY WARRANTY; without even the implied warranty of
    11	   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    12	   Lesser General Public License for more details.
    13	
    14	   You should have received a copy of the GNU Lesser General Public
    15	   License along with the GNU C Library; if not, see
    16	   <https://www.gnu.org/licenses/>.  */
    17	
    18	#ifndef	_SYS_TIMEX_H
    19	#define	_SYS_TIMEX_H	1
    20	
    21	#include <features.h>
    22	#include <sys/time.h>
    23	
    24	/* These definitions from linux/timex.h as of 2.6.30.  */
    25	
    26	#include <bits/timex.h>
    27	
    28	#define NTP_API	4	/* NTP API version */
    29	
    30	struct ntptimeval
    31	{
    32	  struct timeval time;	/* current time (ro) */
    33	  long int maxerror;	/* maximum error (us) (ro) */
    34	  long int esterror;	/* estimated error (us) (ro) */
    35	  long int tai;		/* TAI offset (ro) */
    36	
    37	  long int __glibc_reserved1;
    38	  long int __glibc_reserved2;
    39	  long int __glibc_reserved3;
    40	  long int __glibc_reserved4;
    41	};
    42	
    43	/* Clock states (time_state) */
    44	#define TIME_OK		0	/* clock synchronized, no leap second */
    45	#define TIME_INS	1	/* insert leap second */
    46	#define TIME_DEL	2	/* delete leap second */
    47	#define TIME_OOP	3	/* leap second in progress */
    48	#define TIME_WAIT	4	/* leap second has occurred */
    49	#define TIME_ERROR	5	/* clock not synchronized */
    50	#define TIME_BAD	TIME_ERROR /* bw compat */
    51	
    52	/* Maximum time constant of the PLL.  */
    53	#define MAXTC		6
    54	
    55	__BEGIN_DECLS
    56	
    57	#ifndef __USE_TIME_BITS64
    58	extern int adjtimex (struct timex *__ntx) __THROW __nonnull ((1));
    59	extern int ntp_gettimex (struct ntptimeval *__ntv) __THROW __nonnull ((1));
    60	
    61	# ifdef __REDIRECT_NTH
    62	extern int __REDIRECT_NTH (ntp_gettime, (struct ntptimeval *__ntv),
    63	                           ntp_gettimex) __nonnull ((1));
    64	# else
    65	#  define ntp_gettime ntp_gettimex
    66	# endif
    67	extern int ntp_adjtime (struct timex *__tntx) __THROW __nonnull ((1));
    68	#else
    69	# ifdef __REDIRECT_NTH
    70	extern int __REDIRECT_NTH (adjtimex, (struct timex *__ntx),
    71	                           ___adjtimex64) __nonnull ((1));
    72	extern int __REDIRECT_NTH (ntp_gettime, (struct ntptimeval *__ntv),
    73	                           __ntp_gettime64) __nonnull ((1));
    74	extern int __REDIRECT_NTH (ntp_gettimex, (struct ntptimeval *__ntv),
    75	                           __ntp_gettimex64) __nonnull ((1));
    76	extern int __REDIRECT_NTH (ntp_adjtime, (struct timex *__ntx),
    77	                           ___adjtimex64) __nonnull ((1));
    78	# else
    79	#  define adjtimex ___adjtimex64
    80	#  define ntp_adjtime ___adjtimex64
    81	#  define ntp_gettime __ntp_gettime64
    82	#  define ntp_gettimex __ntp_gettimex64
    83	# endif
    84	#endif
    85	
    86	__END_DECLS
    87	
    88	#endif /* sys/timex.h */