/usr/include/geos/timeval.h is in libgeos++-dev 3.5.1-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* GEOS - Geometry Engine Open Source
* http://geos.osgeo.org
*
* Copyright (C) 2006 Wu Yongwei
*
* This is free software; you can redistribute and/or modify it under
* the terms of the GNU Lesser General Public Licence as published
* by the Free Software Foundation.
* See the COPYING file for more information.
*
* Note: This code is in the public domain, see
* http://wyw.dcweb.cn/time.htm
*
**********************************************************************/
#ifndef GEOS_TIMEVAL_H
#define GEOS_TIMEVAL_H
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <winsock2.h>
#include <time.h>
#if defined(_MSC_VER) || defined(__BORLANDC__)
#define EPOCHFILETIME (116444736000000000i64)
#else
#define EPOCHFILETIME (116444736000000000LL)
#endif
struct timezone {
int tz_minuteswest; /* minutes W of Greenwich */
int tz_dsttime; /* type of dst correction */
};
#if !defined(_WIN32_WCE)
__inline int gettimeofday(struct timeval *tv, struct timezone *tz)
{
FILETIME ft;
LARGE_INTEGER li;
__int64 t;
static int tzflag;
if (tv)
{
GetSystemTimeAsFileTime(&ft);
li.LowPart = ft.dwLowDateTime;
li.HighPart = ft.dwHighDateTime;
t = li.QuadPart; /* In 100-nanosecond intervals */
t -= EPOCHFILETIME; /* Offset to the Epoch time */
t /= 10; /* In microseconds */
tv->tv_sec = (long)(t / 1000000);
tv->tv_usec = (long)(t % 1000000);
}
if (tz)
{
if (!tzflag)
{
_tzset();
tzflag++;
}
tz->tz_minuteswest = _timezone / 60;
tz->tz_dsttime = _daylight;
}
return 0;
}
#else
__inline int gettimeofday(struct timeval *tv, struct timezone *tz)
{
SYSTEMTIME st;
FILETIME ft;
LARGE_INTEGER li;
TIME_ZONE_INFORMATION tzi;
__int64 t;
static int tzflag;
if (tv)
{
GetSystemTime(&st);
SystemTimeToFileTime(&st, &ft);
li.LowPart = ft.dwLowDateTime;
li.HighPart = ft.dwHighDateTime;
t = li.QuadPart; /* In 100-nanosecond intervals */
t -= EPOCHFILETIME; /* Offset to the Epoch time */
t /= 10; /* In microseconds */
tv->tv_sec = (long)(t / 1000000);
tv->tv_usec = (long)(t % 1000000);
}
if (tz)
{
GetTimeZoneInformation(&tzi);
tz->tz_minuteswest = tzi.Bias;
if (tzi.StandardDate.wMonth != 0)
{
tz->tz_minuteswest += tzi.StandardBias * 60;
}
if (tzi.DaylightDate.wMonth != 0)
{
tz->tz_dsttime = 1;
}
else
{
tz->tz_dsttime = 0;
}
}
return 0;
}
#endif /* _WIN32_WCE */
#endif /* GEOS_TIMEVAL_H */
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