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/*
 Copyright (C) 2004 Ferdinando Ametrano
 Copyright (C) 2000-2004 StatPro Italia srl
 
 This file is part of QuantLib, a free-software/open-source library
 for financial quantitative analysts and developers - http://quantlib.org/
 
 QuantLib is free software: you can redistribute it and/or modify it
 under the terms of the QuantLib license.  You should have received a
 copy of the license along with this program; if not, please email
 <quantlib-dev@lists.sf.net>. The license is also available online at
 <http://quantlib.org/license.shtml>.
 
 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 license for more details.
*/
 
/*! \defgroup datetime Date and time calculations
 
    The concrete class <tt>QuantLib::Date</tt> implements the concept
    of date. Its functionalities include:
 
    - providing basic information such as weekday, day of the month,
      day of the year, month, and year;
 
    - comparing two dates to determine whether they are equal, or
      which one is the earlier or later, or the difference between them
      expressed in days;
 
    - incrementing or decrementing a date of a given number of days,
      or of a given period expressed in weeks, months, or years.
 
    @{
*/
 
/*! \defgroup calendars Calendars
 
    The class <tt>QuantLib::Calendar</tt> provides the interface for
    determining whether a date is a business day or a holiday for a
    given exchange or a given country, and for incrementing/decrementing
    a date of a given number of business days. A number of calendars is
    contained in the <tt>ql/time/calendars</tt> directory.
*/
 
/*! \defgroup daycounters Day counters
 
    The class <tt>QuantLib::DayCounter</tt> provides more advanced
    means of measuring the distance between two dates according to a
    given market convention, both as number of days of fraction of
    year. A number of such conventions is contained in the
    <tt>ql/time/daycounters</tt> directory.
*/
 
/*! @} */