diff options
| -rw-r--r-- | src/corelib/global/qnumeric.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/corelib/global/qnumeric.h b/src/corelib/global/qnumeric.h index 28285248c2..63ba2bb378 100644 --- a/src/corelib/global/qnumeric.h +++ b/src/corelib/global/qnumeric.h @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2019 The Qt Company Ltd. +** Copyright (C) 2021 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtCore module of the Qt Toolkit. @@ -73,6 +73,18 @@ QT_BEGIN_NAMESPACE +// To match std::is{inf,nan,finite} functions: +template <typename T> +constexpr typename std::enable_if<std::is_integral<T>::value, bool>::type +qIsInf(T) { return false; } +template <typename T> +constexpr typename std::enable_if<std::is_integral<T>::value, bool>::type +qIsNaN(T) { return false; } +template <typename T> +constexpr typename std::enable_if<std::is_integral<T>::value, bool>::type +qIsFinite(T) { return true; } + +// Floating-point types (see qfloat16.h for its overloads). Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsInf(double d); Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsNaN(double d); Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsFinite(double d); @@ -81,6 +93,7 @@ Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsInf(float f); Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsNaN(float f); Q_CORE_EXPORT Q_DECL_CONST_FUNCTION bool qIsFinite(float f); Q_CORE_EXPORT Q_DECL_CONST_FUNCTION int qFpClassify(float val); + #if QT_CONFIG(signaling_nan) Q_CORE_EXPORT Q_DECL_CONST_FUNCTION double qSNaN(); #endif |