include/QtCore/qminmax.h

0001 // Copyright (C) 2022 The Qt Company Ltd.
0002 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
0003 // Qt-Security score:significant reason:default
0004
0005 #ifndef QMINMAX_H
0006 #define QMINMAX_H
0007
0008 #if 0
0009 #pragma qt_class(QtMinMax)
0010 #pragma qt_sync_stop_processing
0011 #endif
0012
0013 #include <QtCore/qassert.h>
0014 #include <QtCore/qtconfigmacros.h>
0015 #include <QtCore/qttypetraits.h>
0016
0017 QT_BEGIN_NAMESPACE
0018
0019 template <typename T>
0020 constexpr inline const T &qMin(const T &a, const T &b) { return (a < b) ? a : b; }
0021 template <typename T>
0022 constexpr inline const T &qMax(const T &a, const T &b) { return (a < b) ? b : a; }
0023 template <typename T>
0024 constexpr inline const T &qBound(const T &min, const T &val, const T &max)
0025 {
0026     Q_ASSERT(!(max < min));
0027     return qMax(min, qMin(max, val));
0028 }
0029 template <typename T, typename U>
0030 constexpr inline QTypeTraits::Promoted<T, U> qMin(const T &a, const U &b)
0031 {
0032     using P = QTypeTraits::Promoted<T, U>;
0033     P _a = a;
0034     P _b = b;
0035     return (_a < _b) ? _a : _b;
0036 }
0037 template <typename T, typename U>
0038 constexpr inline QTypeTraits::Promoted<T, U> qMax(const T &a, const U &b)
0039 {
0040     using P = QTypeTraits::Promoted<T, U>;
0041     P _a = a;
0042     P _b = b;
0043     return (_a < _b) ? _b : _a;
0044 }
0045 template <typename T, typename U>
0046 constexpr inline QTypeTraits::Promoted<T, U> qBound(const T &min, const U &val, const T &max)
0047 {
0048     Q_ASSERT(!(max < min));
0049     return qMax(min, qMin(max, val));
0050 }
0051 template <typename T, typename U>
0052 constexpr inline QTypeTraits::Promoted<T, U> qBound(const T &min, const T &val, const U &max)
0053 {
0054     using P = QTypeTraits::Promoted<T, U>;
0055     Q_ASSERT(!(P(max) < P(min)));
0056     return qMax(min, qMin(max, val));
0057 }
0058 template <typename T, typename U>
0059 constexpr inline QTypeTraits::Promoted<T, U> qBound(const U &min, const T &val, const T &max)
0060 {
0061     using P = QTypeTraits::Promoted<T, U>;
0062     Q_ASSERT(!(P(max) < P(min)));
0063     return qMax(min, qMin(max, val));
0064 }
0065
0066 QT_END_NAMESPACE
0067
0068 #endif // QMINMAX_H