--- /dev/null
+/*
+ * $Id: gp_time.h,v 1.6.4.1 2008/09/02 21:12:59 sfeam Exp $
+ */
+
+/* GNUPLOT - gp_time.h */
+
+/*[
+ * Copyright 1999, 2004 Thomas Williams, Colin Kelley
+ *
+ * Permission to use, copy, and distribute this software and its
+ * documentation for any purpose with or without fee is hereby granted,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation.
+ *
+ * Permission to modify the software is granted, but not the right to
+ * distribute the complete modified source code. Modifications are to
+ * be distributed as patches to the released version. Permission to
+ * distribute binaries produced by compiling modified sources is granted,
+ * provided you
+ * 1. distribute the corresponding source modifications from the
+ * released version in the form of a patch file along with the binaries,
+ * 2. add special version identification to distinguish your version
+ * in addition to the base release version number,
+ * 3. provide your name and address as the primary contact for the
+ * support of your modified version, and
+ * 4. retain our contact information in regard to use of the base
+ * software.
+ * Permission to distribute the released version of the source code along
+ * with corresponding source modifications in the form of a patch file is
+ * granted with same provisions 2 through 4 for binary distributions.
+ *
+ * This software is provided "as is" without express or implied warranty
+ * to the extent permitted by applicable law.
+]*/
+
+#ifndef GNUPLOT_GP_TIME_H
+# define GNUPLOT_GP_TIME_H
+
+/* #if... / #include / #define collection: */
+
+#include "syscfg.h"
+#include "stdfn.h"
+
+/* defines used for timeseries, seconds */
+#define ZERO_YEAR 2000
+#define JAN_FIRST_WDAY 6 /* 1st jan, 2000 is a Saturday (cal 1 2000 on unix) */
+#define SEC_OFFS_SYS 946684800.0 /* zero gnuplot (2000) - zero system (1970) */
+#define YEAR_SEC 31557600.0 /* avg, incl. leap year */
+#define MON_SEC 2629800.0 /* YEAR_SEC / 12 */
+#define WEEK_SEC 604800.0
+#define DAY_SEC 86400.0
+
+/* Type definitions */
+
+/* Variables of time.c needed by other modules: */
+
+/* Prototypes of functions exported by time.c */
+
+/* string to *tm */
+char * gstrptime __PROTO((char *, char *, struct tm *));
+
+/* seconds to string */
+size_t gstrftime __PROTO((char *, size_t, const char *, double));
+
+/* *tm to seconds */
+double gtimegm __PROTO((struct tm *));
+
+/* seconds to *tm */
+int ggmtime __PROTO((struct tm *, double));
+
+
+
+#endif /* GNUPLOT_GP_TIME_H */