Artificial Neural Networks made easy with the FANN library

/*

Originally timeval.h by Wu Yongwei

Fast Artificial Neural Network Library (fann)
Copyright (C) 2003 Steffen Nissen (lukesky@diku.dk)

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

/*
 * timeval.h    1.0 01/12/19
 *
 * Defines gettimeofday, timeval, etc. for Win32
 *
 * By Wu Yongwei
 *
 */

#ifndef _TIMEVAL_H
#define _TIMEVAL_H

#ifdef _WIN32

/* Modified to compile as ANSI C without include of windows.h
   If this gives problems with future Windows/MSC versions, then
   uncomment the USE_WINDOWS_H definition to switch back. */
/* #define USE_WINDOWS_H */
#ifdef USE_WINDOWS_H
    #define WIN32_LEAN_AND_MEAN
    #include <windows.h>
#else
#ifndef _INC_WINDOWS
    #define VOID void
    #define WINAPI __stdcall
    #define OUT
    #define WINBASEAPI

    typedef long LONG;
    typedef unsigned long DWORD;
    typedef __int64 LONGLONG;

    typedef struct _FILETIME {
        DWORD dwLowDateTime;
        DWORD dwHighDateTime;
    } FILETIME, *LPFILETIME;

    typedef union _LARGE_INTEGER {
        /* Removed unnamed struct,
           it is not ANSI C compatible*/
        /* struct {
            DWORD LowPart;
            LONG HighPart;
        }; */
        struct {
            DWORD LowPart;
            LONG HighPart;
        } u;
        LONGLONG QuadPart;
    } LARGE_INTEGER;

    WINBASEAPI VOID WINAPI
    GetSystemTimeAsFileTime(OUT LPFILETIME lpSystemTimeAsFileTime);
#endif /* _INC_WINDOWS */
#endif /* USE_WINDOWS_H */

#include <time.h>

#ifndef __GNUC__
#define EPOCHFILETIME (116444736000000000i64)
#else
#define EPOCHFILETIME (116444736000000000LL)
#endif

struct timeval {
    long tv_sec;        /* seconds */
    long tv_usec;  /* microseconds */
};

struct timezone {
    int tz_minuteswest; /* minutes W of Greenwich */
    int tz_dsttime;     /* type of dst correction */
};

__inline int gettimeofday(struct timeval *tv, struct timezone *tz)
{
    FILETIME        ft;
    LARGE_INTEGER   li;
    __int64         t;
    static int      tzflag;

    if (tv)
    {
        GetSystemTimeAsFileTime(&ft);

        /* The following two lines have been modified to use the named
           union member. Unnamed members are not ANSI C compatible. */
        li.u.LowPart  = ft.dwLowDateTime;
        li.u.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  /* _WIN32 */

#include <sys/time.h>

#endif /* _WIN32 */

#endif /* _TIMEVAL_H */