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The C and C++ Include Header Files

/usr/include/ntirpc/misc/timespec.h


$ cat -n /usr/include/ntirpc/misc/timespec.h

     1	/*-
     2	 * Copyright (c) 1982, 1986, 1993
     3	 *      The Regents of the University of California.  All rights reserved.
     4	 * Copyright (c) 2012-2017 Red Hat, Inc. and/or its affiliates.
     5	 *
     6	 * Redistribution and use in source and binary forms, with or without
     7	 * modification, are permitted provided that the following conditions
     8	 * are met:
     9	 * 1. Redistributions of source code must retain the above copyright
    10	 *    notice, this list of conditions and the following disclaimer.
    11	 * 2. Redistributions in binary form must reproduce the above copyright
    12	 *    notice, this list of conditions and the following disclaimer in the
    13	 *    documentation and/or other materials provided with the distribution.
    14	 * 4. Neither the name of the University nor the names of its contributors
    15	 *    may be used to endorse or promote products derived from this software
    16	 *    without specific prior written permission.
    17	 *
    18	 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
    19	 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    20	 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    21	 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
    22	 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    23	 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
    24	 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    25	 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    26	 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    27	 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    28	 * SUCH DAMAGE.
    29	 *
    30	 *      @(#)time.h      8.5 (Berkeley) 5/4/95
    31	 * $FreeBSD: head/sys/sys/time.h 224732 2011-08-09 14:06:50Z jonathan $
    32	 */
    33	
    34	#ifndef TIMESPEC_H
    35	
    36	/* Convert to coarse milliseconds with round up */
    37	#define timespec_ms(tsp) \
    38		((tsp)->tv_sec * 1000 + ((tsp)->tv_nsec + 999999) / 1000000)
    39	
    40	/* Operations on timespecs */
    41	#define timespecclear(tvp)      ((tvp)->tv_sec = (tvp)->tv_nsec = 0)
    42	#define timespecisset(tvp)      ((tvp)->tv_sec || (tvp)->tv_nsec)
    43	#ifndef timespeccmp
    44	#define timespeccmp(tvp, uvp, cmp)					\
    45		(((tvp)->tv_sec == (uvp)->tv_sec) ?				\
    46		    ((tvp)->tv_nsec cmp (uvp)->tv_nsec) :			\
    47		    ((tvp)->tv_sec cmp (uvp)->tv_sec))
    48	#endif	/* timespeccmp */
    49	#ifndef timespecadd
    50	#define timespecadd(tsp, usp, vsp)					\
    51		do {								\
    52			(vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec;		\
    53			(vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec;	\
    54			if ((vsp)->tv_nsec >= 1000000000L) {			\
    55				(vsp)->tv_sec++;				\
    56				(vsp)->tv_nsec -= 1000000000L;			\
    57			}							\
    58		} while (0)
    59	#endif	/* timespecadd */
    60	
    61	#define timespec_adds(vvp, s)			\
    62		do {					\
    63			(vvp)->tv_sec += s;		\
    64		} while (0)
    65	
    66	#define timespec_addms(vvp, ms)					\
    67		do {							\
    68			(vvp)->tv_sec += (ms) / 1000;			\
    69			(vvp)->tv_nsec += (((ms) % 1000) * 1000000);	\
    70			if ((vvp)->tv_nsec >= 1000000000) {		\
    71				(vvp)->tv_sec++;			\
    72				(vvp)->tv_nsec -= 1000000000;		\
    73			}						\
    74		} while (0)
    75	
    76	#ifndef timespecsub
    77	#define timespecsub(tsp, usp, vsp)					\
    78		do {								\
    79			(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;		\
    80			(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;	\
    81			if ((vsp)->tv_nsec < 0) {				\
    82				(vsp)->tv_sec--;				\
    83				(vsp)->tv_nsec += 1000000000L;			\
    84			}							\
    85		} while (0)
    86	#endif /* timespecsub */
    87	
    88	#endif				/* TIMESPEC_H */