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/*
* $Id: gp_time.h,v 1.6 2004/04/13 17:23:53 broeker 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 *));
/* *tm 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 */
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