diff options
Diffstat (limited to 'src/corelib/kernel/qmath.h')
| -rw-r--r-- | src/corelib/kernel/qmath.h | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/src/corelib/kernel/qmath.h b/src/corelib/kernel/qmath.h index 773884047a..305e9065e9 100644 --- a/src/corelib/kernel/qmath.h +++ b/src/corelib/kernel/qmath.h @@ -149,6 +149,8 @@ inline qreal qPow(qreal x, qreal y) return pow(x, y); } +// TODO: use template variables (e.g. Qt::pi<type>) for these once we have C++14 support: + #ifndef M_E #define M_E (2.7182818284590452354) #endif @@ -242,16 +244,13 @@ Q_DECL_CONSTEXPR inline double qRadiansToDegrees(double radians) } -#if defined(QT_HAS_BUILTIN_CLZ) -inline quint32 qNextPowerOfTwo(quint32 v) +Q_DECL_RELAXED_CONSTEXPR inline quint32 qNextPowerOfTwo(quint32 v) { +#if defined(QT_HAS_BUILTIN_CLZ) if (v == 0) return 1; return 2U << (31 ^ QAlgorithmsPrivate::qt_builtin_clz(v)); -} #else -inline quint32 qNextPowerOfTwo(quint32 v) -{ v |= v >> 1; v |= v >> 2; v |= v >> 4; @@ -259,19 +258,16 @@ inline quint32 qNextPowerOfTwo(quint32 v) v |= v >> 16; ++v; return v; -} #endif +} -#if defined(QT_HAS_BUILTIN_CLZLL) -inline quint64 qNextPowerOfTwo(quint64 v) +Q_DECL_RELAXED_CONSTEXPR inline quint64 qNextPowerOfTwo(quint64 v) { +#if defined(QT_HAS_BUILTIN_CLZLL) if (v == 0) return 1; return Q_UINT64_C(2) << (63 ^ QAlgorithmsPrivate::qt_builtin_clzll(v)); -} #else -inline quint64 qNextPowerOfTwo(quint64 v) -{ v |= v >> 1; v |= v >> 2; v |= v >> 4; @@ -280,15 +276,15 @@ inline quint64 qNextPowerOfTwo(quint64 v) v |= v >> 32; ++v; return v; -} #endif +} -inline quint32 qNextPowerOfTwo(qint32 v) +Q_DECL_RELAXED_CONSTEXPR inline quint32 qNextPowerOfTwo(qint32 v) { return qNextPowerOfTwo(quint32(v)); } -inline quint64 qNextPowerOfTwo(qint64 v) +Q_DECL_RELAXED_CONSTEXPR inline quint64 qNextPowerOfTwo(qint64 v) { return qNextPowerOfTwo(quint64(v)); } |