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#ifndef DATE_TIME_GREGORIAN_CALENDAR_HPP__
#define DATE_TIME_GREGORIAN_CALENDAR_HPP__
/* Copyright (c) 2002,2003 CrystalClear Software, Inc.
* Use, modification and distribution is subject to the
* Boost Software License, Version 1.0. (See accompanying
* file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
* Author: Jeff Garland
* $Date: 2008-02-27 15:00:24 -0500 (Wed, 27 Feb 2008) $
*/
namespace boost {
namespace date_time {
//! An implementation of the Gregorian calendar
/*! This is a parameterized implementation of a proleptic Gregorian Calendar that
can be used in the creation of date systems or just to perform calculations.
All the methods of this class are static functions, so the intent is to
never create instances of this class.
@param ymd_type_ Struct type representing the year, month, day. The ymd_type must
define a of types for the year, month, and day. These types need to be
arithmetic types.
@param date_int_type_ Underlying type for the date count. Must be an arithmetic type.
*/
template<typename ymd_type_, typename date_int_type_>
class gregorian_calendar_base {
public:
//! define a type a date split into components
typedef ymd_type_ ymd_type;
//! define a type for representing months
typedef typename ymd_type::month_type month_type;
//! define a type for representing days
typedef typename ymd_type::day_type day_type;
//! Type to hold a stand alone year value (eg: 2002)
typedef typename ymd_type::year_type year_type;
//! Define the integer type to use for internal calculations
typedef date_int_type_ date_int_type;
static unsigned short day_of_week(const ymd_type& ymd);
static int week_number(const ymd_type&ymd);
//static unsigned short day_of_year(date_int_type);
static date_int_type day_number(const ymd_type& ymd);
static date_int_type julian_day_number(const ymd_type& ymd);
static long modjulian_day_number(const ymd_type& ymd);
static ymd_type from_day_number(date_int_type);
static ymd_type from_julian_day_number(date_int_type);
static ymd_type from_modjulian_day_number(long);
static bool is_leap_year(year_type);
static unsigned short end_of_month_day(year_type y, month_type m);
static ymd_type epoch();
static unsigned short days_in_week();
};
} } //namespace
#ifndef NO_BOOST_DATE_TIME_INLINE
#include "boost/date_time/gregorian_calendar.ipp"
#endif
#endif
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