1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2015 The Qt Company Ltd. 4 ** Contact: http://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 http://www.qt.io/terms-conditions. For further 15 ** information use the contact form at http://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 2.1 or version 3 as published by the Free 20 ** Software Foundation and appearing in the file LICENSE.LGPLv21 and 21 ** LICENSE.LGPLv3 included in the packaging of this file. Please review the 22 ** following information to ensure the GNU Lesser General Public License 23 ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and 24 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. 25 ** 26 ** As a special exception, The Qt Company gives you certain additional 27 ** rights. These rights are described in The Qt Company LGPL Exception 28 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. 29 ** 30 ** GNU General Public License Usage 31 ** Alternatively, this file may be used under the terms of the GNU 32 ** General Public License version 3.0 as published by the Free Software 33 ** Foundation and appearing in the file LICENSE.GPL included in the 34 ** packaging of this file. Please review the following information to 35 ** ensure the GNU General Public License version 3.0 requirements will be 36 ** met: http://www.gnu.org/copyleft/gpl.html. 37 ** 38 ** $QT_END_LICENSE$ 39 ** 40 ****************************************************************************/ 41 42 #include "qnumeric.h" 43 #include "qnumeric_p.h" 44 45 QT_BEGIN_NAMESPACE 46 47 /*! 48 Returns true if the double \a {d} is equivalent to infinity. 49 */ qIsInf(double d)50Q_CORE_EXPORT bool qIsInf(double d) { return qt_is_inf(d); } 51 52 /*! 53 Returns true if the double \a {d} is not a number (NaN). 54 */ qIsNaN(double d)55Q_CORE_EXPORT bool qIsNaN(double d) { return qt_is_nan(d); } 56 57 /*! 58 Returns true if the double \a {d} is a finite number. 59 */ qIsFinite(double d)60Q_CORE_EXPORT bool qIsFinite(double d) { return qt_is_finite(d); } 61 62 /*! 63 Returns true if the float \a {f} is equivalent to infinity. 64 */ qIsInf(float f)65Q_CORE_EXPORT bool qIsInf(float f) { return qt_is_inf(f); } 66 67 /*! 68 Returns true if the float \a {f} is not a number (NaN). 69 */ qIsNaN(float f)70Q_CORE_EXPORT bool qIsNaN(float f) { return qt_is_nan(f); } 71 72 /*! 73 Returns true if the float \a {f} is a finite number. 74 */ qIsFinite(float f)75Q_CORE_EXPORT bool qIsFinite(float f) { return qt_is_finite(f); } 76 77 /*! 78 Returns the bit pattern of a signalling NaN as a double. 79 */ qSNaN()80Q_CORE_EXPORT double qSNaN() { return qt_snan(); } 81 82 /*! 83 Returns the bit pattern of a quiet NaN as a double. 84 */ qQNaN()85Q_CORE_EXPORT double qQNaN() { return qt_qnan(); } 86 87 /*! 88 Returns the bit pattern for an infinite number as a double. 89 */ qInf()90Q_CORE_EXPORT double qInf() { return qt_inf(); } 91 92 93 QT_END_NAMESPACE 94