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 45 QT_BEGIN_NAMESPACE 46 47 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsInf(double d); 48 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsNaN(double d); 49 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsFinite(double d); 50 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION int qFpClassify(double val); 51 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsInf(float f); 52 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsNaN(float f); 53 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsFinite(float f); 54 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION int qFpClassify(float val); 55 #if QT_CONFIG(signaling_nan) 56 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION double qSNaN(); 57 #endif 58 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION double qQNaN(); 59 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION double qInf(); 60 61 Q_CORE_EXPORT quint32 qFloatDistance(float a, float b); 62 Q_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 70 QT_END_NAMESPACE 71 72 #endif // QNUMERIC_H 73