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  1. /*
  2.  * Copyright (c) 2006 Ondrej Palkovsky
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - 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.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup libc
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef LIBC_SYS_TIME_H_
  36. #define LIBC_SYS_TIME_H_
  37.  
  38. #include <sys/types.h>
  39.  
  40. #define DST_NONE 0
  41.  
  42. typedef long time_t;
  43. typedef long suseconds_t;
  44.  
  45. struct timeval {
  46.     time_t         tv_sec;        /* seconds */
  47.     suseconds_t    tv_usec;  /* microseconds */
  48. };
  49.  
  50. struct timezone {
  51.     int  tz_minuteswest; /* minutes W of Greenwich */
  52.     int  tz_dsttime;     /* type of dst correction */
  53. };
  54.  
  55. extern void tv_add(struct timeval *tv, suseconds_t usecs);
  56. extern suseconds_t tv_sub(struct timeval *tv1, struct timeval *tv2);
  57. extern int tv_gt(struct timeval *tv1, struct timeval *tv2);
  58. extern int tv_gteq(struct timeval *tv1, struct timeval *tv2);
  59. extern int gettimeofday(struct timeval *tv, struct timezone *tz);
  60.  
  61. #endif
  62.  
  63. /** @}
  64.  */
  65.