-/* Convert calendar time to simple time, inverse of mktime.
- Copyright (C) 2003 Free Software Foundation, Inc.
+/* Convert UTC calendar time to simple time. Like mktime but assumes UTC.
+
+ Copyright (C) 2003, 2005 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-#ifdef HAVE_TIMEGM
-
-/* Get timegm declaration. */
-#include <time.h>
-
-#else
-
-/* Get time_t and struct tm. */
#include <time.h>
-/* Convert calendar time to simple time, inverse of mktime. */
-extern time_t timegm (struct tm *tm);
-
+#if defined HAVE_DECL_TIMEGM && !HAVE_DECL_TIMEGM
+time_t timegm (struct tm *tm);
#endif