text: /* Copyright (C) 1997, 1998, 1999, 2001 Free Software Foundation, Inc.
  This file is part of GNU Fortran libU77 library.
  
  This library is free software; you can redistribute it and/or modify it
  under the terms of the GNU Library General Public License as published
  by the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.
  
  GNU Fortran 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
  Library General Public License for more details.
  
  You should have received a copy of the GNU Library General Public
  License along with GNU Fortran; see the file COPYING.LIB.  If
  not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  Boston, MA 02111-1307, USA.  */
  
  #ifdef HAVE_CONFIG_H
  #include "config.h"
  #endif
  #include <stdio.h>
  #include <sys/types.h>
  #if TIME_WITH_SYS_TIME
  # include <sys/time.h>
  # include <time.h>
  #else
  # if HAVE_SYS_TIME_H
  #  include <sys/time.h>
  # else
  #  include <time.h>
  # endif
  #endif
  #if defined (_WIN32)
  #include <windows.h>
  #undef min
  #undef max
  #endif
  #include "f2c.h"
  
  void s_copy (register char *a, register char *b, ftnlen la, ftnlen lb);
  
  int
  G77_date_and_time_0 (char *date, char *fftime, char *zone,
  		     integer * values, ftnlen date_len,
  		     ftnlen fftime_len, ftnlen zone_len)
  {
    time_t lt = time (&lt);
    struct tm ltime = *localtime (&lt), gtime = *gmtime (&lt);
    char dat[9], zon[6], ftim[11];
    int i, vals[8];
  #if defined (_WIN32)
      struct _SYSTEMTIME wdattim;
      GetLocalTime(&wdattim);
      vals[7] = wdattim.wMilliseconds;
  #else
    vals[7] = 0;                  /* no STDC/POSIX way to get this */
    /* GNUish way; maybe use `ftime' on other systems. */
  #endif
  
    vals[0] = 1900 + ltime.tm_year;
    vals[1] = 1 + ltime.tm_mon;
    vals[2] = ltime.tm_mday;
    /* fixme: year boundaries */
    vals[3] = (ltime.tm_min - gtime.tm_min +
  	     60 * (ltime.tm_hour - gtime.tm_hour +
  		   24 * (ltime.tm_yday - gtime.tm_yday)));
    vals[4] = ltime.tm_hour;
    vals[5] = ltime.tm_min;
    vals[6] = ltime.tm_sec;
  #if HAVE_GETTIMEOFDAY
    {
      struct timeval tp;
  #  if GETTIMEOFDAY_ONE_ARGUMENT
      if (!gettimeofday (&tp))
  #  else
  #    if HAVE_STRUCT_TIMEZONE
      struct timezone tzp;
      /* Some systems such as HPUX, do have struct timezone, but
         gettimeofday takes void* as the 2nd arg.  However, the effect
         of passing anything other than a null pointer is unspecified on
         HPUX.  Configure checks if gettimeofday actually fails with a
         non-NULL arg and pretends that struct timezone is missing if it
         does fail.  */
      if (!gettimeofday (&tp, &tzp))
  #    else
      if (!gettimeofday (&tp, (void *) 0))
  #    endif /* HAVE_STRUCT_TIMEZONE */
  #  endif /* GETTIMEOFDAY_ONE_ARGUMENT */
        vals[7] = tp.tv_usec / 1000;
    }
  #endif /* HAVE_GETTIMEOFDAY */
    if (values)			/* null pointer for missing optional */
      for (i = 0; i <= 7; i++)
        values[i] = vals[i];
    sprintf (dat, "%04d%02d%02d", vals[0], vals[1], vals[2]);
    s_copy (date, dat, date_len, 8);
    if (zone)
      {
        sprintf (zon, "%+03d%02d", vals[3] / 60, abs (vals[3] % 60));
        s_copy (zone, zon, zone_len, 5);
      }
    if (fftime)
      {
        sprintf (ftim, "%02d%02d%02d.%03d", vals[4], vals[5], vals[6], vals[7]);
        s_copy (fftime, ftim, fftime_len, 10);
      }
    return 0;
  }
  