1 /****************************************************************************
2 * Copyright 2020 Thomas E. Dickey *
3 * Copyright 2008-2010,2014 Free Software Foundation, Inc. *
5 * Permission is hereby granted, free of charge, to any person obtaining a *
6 * copy of this software and associated documentation files (the *
7 * "Software"), to deal in the Software without restriction, including *
8 * without limitation the rights to use, copy, modify, merge, publish, *
9 * distribute, distribute with modifications, sublicense, and/or sell *
10 * copies of the Software, and to permit persons to whom the Software is *
11 * furnished to do so, subject to the following conditions: *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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24 * Except as contained in this notice, the name(s) of the above copyright *
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26 * sale, use or other dealings in this Software without prior written *
28 ****************************************************************************/
35 #include <curses.priv.h>
39 MODULE_ID("$Id: gettimeofday.c,v 1.6 2020/07/11 21:03:53 tom Exp $")
41 #define JAN1970 116444736000000000LL /* the value for 01/01/1970 00:00 */
44 gettimeofday(struct timeval *tv, void *tz GCC_UNUSED)
48 long long since1601; /* time since 1 Jan 1601 in 100ns units */
51 GetSystemTimeAsFileTime(&data.ft);
52 tv->tv_usec = (long) ((data.since1601 / 10LL) % 1000000LL);
53 tv->tv_sec = (long) ((data.since1601 - JAN1970) / 10000000LL);