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diff --git a/sources/shiboken2/tests/libsample/transform.cpp b/sources/shiboken2/tests/libsample/transform.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Copyright (C) 2013 Kitware, Inc.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the test suite of PySide2.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "transform.h"
+
+#ifdef _WIN32
+#include <math.h>
+#include <float.h>
+static inline bool isfinite(double a) { return _finite(a); }
+#else
+#include <cmath>
+#endif
+
+using namespace std;
+
+Point applyHomogeneousTransform(
+ const Point& in,
+ double m11, double m12, double m13,
+ double m21, double m22, double m23,
+ double m31, double m32, double m33,
+ bool* okay)
+{
+ double x = m11 * in.x() + m12 * in.y() + m13;
+ double y = m21 * in.x() + m22 * in.y() + m23;
+ double w = m31 * in.x() + m32 * in.y() + m33;
+
+ if (isfinite(w) && fabs(w) > 1e-10)
+ {
+ if (okay)
+ *okay = true;
+ return Point(x / w, y / w);
+ }
+ else
+ {
+ if (okay)
+ *okay = false;
+ return Point();
+ }
+}