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diff --git a/src/corelib/tools/qdatetime_mac.mm b/src/corelib/tools/qdatetime_mac.mm
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+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Copyright (C) 2014 Petroules Corporation.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qdatetime.h"
+
+#import <Foundation/Foundation.h>
+
+QT_BEGIN_NAMESPACE
+
+QDateTime QDateTime::fromCFDate(CFDateRef date)
+{
+    if (!date)
+        return QDateTime();
+    return QDateTime::fromMSecsSinceEpoch(static_cast<qint64>((CFDateGetAbsoluteTime(date)
+                                                    + kCFAbsoluteTimeIntervalSince1970) * 1000));
+}
+
+CFDateRef QDateTime::toCFDate() const
+{
+    return CFDateCreate(kCFAllocatorDefault, (static_cast<CFAbsoluteTime>(toMSecsSinceEpoch())
+                                                    / 1000) - kCFAbsoluteTimeIntervalSince1970);
+}
+
+QDateTime QDateTime::fromNSDate(const NSDate *date)
+{
+    if (!date)
+        return QDateTime();
+    return QDateTime::fromMSecsSinceEpoch(static_cast<qint64>([date timeIntervalSince1970] * 1000));
+}
+
+NSDate *QDateTime::toNSDate() const
+{
+    return [NSDate
+            dateWithTimeIntervalSince1970:static_cast<NSTimeInterval>(toMSecsSinceEpoch()) / 1000];
+}
+
+QT_END_NAMESPACE