Imported Upstream version 1.3.9

[debian/gzip] / lib / timespec.h

diff --git a/lib/timespec.h b/lib/timespec.h
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--- /dev/null
+++ b/lib/timespec.h
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+/* timespec -- System time interface
+
+   Copyright (C) 2000, 2002, 2004, 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
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#if ! defined TIMESPEC_H
+# define TIMESPEC_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 ! HAVE_STRUCT_TIMESPEC
+/* Some systems don't define this struct, e.g., AIX 4.1, Ultrix 4.3.  */
+struct timespec
+{
+  time_t tv_sec;
+  long tv_nsec;
+};
+# endif
+
+/* Return negative, zero, positive if A < B, A == B, A > B, respectively.
+   Assume the nanosecond components are in range, or close to it.  */
+static inline int
+timespec_cmp (struct timespec a, struct timespec b)
+{
+  return (a.tv_sec < b.tv_sec ? -1
+         : a.tv_sec > b.tv_sec ? 1
+         : a.tv_nsec - b.tv_nsec);
+}
+
+# if ! HAVE_DECL_NANOSLEEP
+/* Don't specify a prototype here.  Some systems (e.g., OSF) declare
+   nanosleep with a conflicting one (const-less first parameter).  */
+int nanosleep ();
+# endif
+
+void gettime (struct timespec *);
+int settime (struct timespec const *);
+
+#endif