diff options
Diffstat (limited to 'src/corelib/global/qfloat16.h')
| -rw-r--r-- | src/corelib/global/qfloat16.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/corelib/global/qfloat16.h b/src/corelib/global/qfloat16.h index 02fd2f03cc..f35eefd922 100644 --- a/src/corelib/global/qfloat16.h +++ b/src/corelib/global/qfloat16.h @@ -84,6 +84,9 @@ public: bool isNaN() const noexcept { return ((b16 >> 8) & 0x7e) == 0x7e; } bool isFinite() const noexcept { return ((b16 >> 8) & 0x7c) != 0x7c; } Q_CORE_EXPORT int fpClassify() const noexcept; + // Can't specialize std::copysign() for qfloat16 + qfloat16 copySign(qfloat16 sign) const noexcept + { return qfloat16(Wrap((sign.b16 & 0x8000) | (b16 & 0x7fff))); } // Support for std::numeric_limits<qfloat16> static constexpr qfloat16 _limit_epsilon() noexcept { return qfloat16(Wrap(0x1400)); } static constexpr qfloat16 _limit_min() noexcept { return qfloat16(Wrap(0x400)); } @@ -92,7 +95,9 @@ public: static constexpr qfloat16 _limit_lowest() noexcept { return qfloat16(Wrap(0xfbff)); } static constexpr qfloat16 _limit_infinity() noexcept { return qfloat16(Wrap(0x7c00)); } static constexpr qfloat16 _limit_quiet_NaN() noexcept { return qfloat16(Wrap(0x7e00)); } - // Signalling NaN is 0x7f00 +#if QT_CONFIG(signaling_nan) + static constexpr qfloat16 _limit_signaling_NaN() noexcept { return qfloat16(Wrap(0x7f00)); } +#endif inline constexpr bool isNormal() const noexcept { return (b16 & 0x7fff) == 0 || ((b16 & 0x7c00) && (b16 & 0x7c00) != 0x7c00); } private: @@ -328,6 +333,12 @@ public: { return QT_PREPEND_NAMESPACE(qfloat16)::_limit_infinity(); } static constexpr QT_PREPEND_NAMESPACE(qfloat16) quiet_NaN() { return QT_PREPEND_NAMESPACE(qfloat16)::_limit_quiet_NaN(); } +#if QT_CONFIG(signaling_nan) + static constexpr QT_PREPEND_NAMESPACE(qfloat16) signaling_NaN() + { return QT_PREPEND_NAMESPACE(qfloat16)::_limit_signaling_NaN(); } +#else + static constexpr bool has_signaling_NaN = false; +#endif }; template<> class numeric_limits<const QT_PREPEND_NAMESPACE(qfloat16)> |