lib/libnetbsd/sys/time.h

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