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include
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boost
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date_time
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posix_time
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Filename :
date_duration_operators.hpp
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#ifndef DATE_DURATION_OPERATORS_HPP___ #define DATE_DURATION_OPERATORS_HPP___ /* Copyright (c) 2004 CrystalClear Software, Inc. * 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, Bart Garst * $Date$ */ #include "boost/date_time/gregorian/greg_duration_types.hpp" #include "boost/date_time/posix_time/ptime.hpp" namespace boost { namespace posix_time { /*!@file date_duration_operators.hpp Operators for ptime and * optional gregorian types. Operators use snap-to-end-of-month behavior. * Further details on this behavior can be found in reference for * date_time/date_duration_types.hpp and documentation for * month and year iterators. */ /*! Adds a months object and a ptime. Result will be same * day-of-month as ptime unless original day was the last day of month. * see date_time::months_duration for more details */ inline BOOST_CXX14_CONSTEXPR ptime operator+(const ptime& t, const boost::gregorian::months& m) { return t + m.get_offset(t.date()); } /*! Adds a months object to a ptime. Result will be same * day-of-month as ptime unless original day was the last day of month. * see date_time::months_duration for more details */ inline BOOST_CXX14_CONSTEXPR ptime operator+=(ptime& t, const boost::gregorian::months& m) { // get_neg_offset returns a negative duration, so we add return t += m.get_offset(t.date()); } /*! Subtracts a months object and a ptime. Result will be same * day-of-month as ptime unless original day was the last day of month. * see date_time::months_duration for more details */ inline BOOST_CXX14_CONSTEXPR ptime operator-(const ptime& t, const boost::gregorian::months& m) { // get_neg_offset returns a negative duration, so we add return t + m.get_neg_offset(t.date()); } /*! Subtracts a months object from a ptime. Result will be same * day-of-month as ptime unless original day was the last day of month. * see date_time::months_duration for more details */ inline BOOST_CXX14_CONSTEXPR ptime operator-=(ptime& t, const boost::gregorian::months& m) { return t += m.get_neg_offset(t.date()); } // ptime & years /*! Adds a years object and a ptime. Result will be same * month and day-of-month as ptime unless original day was the * last day of month. see date_time::years_duration for more details */ inline BOOST_CXX14_CONSTEXPR ptime operator+(const ptime& t, const boost::gregorian::years& y) { return t + y.get_offset(t.date()); } /*! Adds a years object to a ptime. Result will be same * month and day-of-month as ptime unless original day was the * last day of month. see date_time::years_duration for more details */ inline BOOST_CXX14_CONSTEXPR ptime operator+=(ptime& t, const boost::gregorian::years& y) { return t += y.get_offset(t.date()); } /*! Subtracts a years object and a ptime. Result will be same * month and day-of-month as ptime unless original day was the * last day of month. see date_time::years_duration for more details */ inline BOOST_CXX14_CONSTEXPR ptime operator-(const ptime& t, const boost::gregorian::years& y) { // get_neg_offset returns a negative duration, so we add return t + y.get_neg_offset(t.date()); } /*! Subtracts a years object from a ptime. Result will be same * month and day-of-month as ptime unless original day was the * last day of month. see date_time::years_duration for more details */ inline BOOST_CXX14_CONSTEXPR ptime operator-=(ptime& t, const boost::gregorian::years& y) { // get_neg_offset returns a negative duration, so we add return t += y.get_neg_offset(t.date()); } }} // namespaces #endif // DATE_DURATION_OPERATORS_HPP___