File indexing completed on 2024-04-21 08:29:50
0001 /* 0002 SPDX-FileCopyrightText: 2020 Volker Krause <vkrause@kde.org> 0003 0004 SPDX-License-Identifier: LGPL-2.0-or-later 0005 */ 0006 0007 #include "easter_p.h" 0008 0009 #include <QDate> 0010 0011 using namespace KOpeningHours; 0012 0013 QDate Easter::easterDate(int year) 0014 { 0015 // algorithm from KHolidays 0016 const int g = year % 19; 0017 const int c = year / 100; 0018 const int h = (c - (c / 4) - (((8 * c) + 13) / 25) + (19 * g) + 15) % 30; 0019 const int i = h - ((h / 28) * (1 - ((29 / (h + 1)) * ((21 - g) / 11)))); 0020 const int j = (year + (year / 4) + i + 2 - c + (c / 4)) % 7; 0021 const int l = i - j; 0022 const int month = 3 + ((l + 40) / 44); 0023 const int day = l + 28 - (31 * (month / 4)); 0024 0025 return QDate(year, month, day); 0026 }