1/****************************************************************************
2**
3** Copyright (C) 2019 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtCore module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39
40#ifndef QNUMERIC_H
41#define QNUMERIC_H
42
43#include <QtCore/qglobal.h>
44
45QT_BEGIN_NAMESPACE
46
47Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsInf(double d);
48Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsNaN(double d);
49Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsFinite(double d);
50Q_CORE_EXPORT Q_DECL_CONST_FUNCTION int qFpClassify(double val);
51Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsInf(float f);
52Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsNaN(float f);
53Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsFinite(float f);
54Q_CORE_EXPORT Q_DECL_CONST_FUNCTION int qFpClassify(float val);
55#if QT_CONFIG(signaling_nan)
56Q_CORE_EXPORT Q_DECL_CONST_FUNCTION double qSNaN();
57#endif
58Q_CORE_EXPORT Q_DECL_CONST_FUNCTION double qQNaN();
59Q_CORE_EXPORT Q_DECL_CONST_FUNCTION double qInf();
60
61Q_CORE_EXPORT quint32 qFloatDistance(float a, float b);
62Q_CORE_EXPORT quint64 qFloatDistance(double a, double b);
63
64#define Q_INFINITY (QT_PREPEND_NAMESPACE(qInf)())
65#if QT_CONFIG(signaling_nan)
66# define Q_SNAN (QT_PREPEND_NAMESPACE(qSNaN)())
67#endif
68#define Q_QNAN (QT_PREPEND_NAMESPACE(qQNaN)())
69
70QT_END_NAMESPACE
71
72#endif // QNUMERIC_H
73