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-rw-r--r--src/corelib/global/qfloat16.h88
1 files changed, 47 insertions, 41 deletions
diff --git a/src/corelib/global/qfloat16.h b/src/corelib/global/qfloat16.h
index a8befd7adb..243aea98be 100644
--- a/src/corelib/global/qfloat16.h
+++ b/src/corelib/global/qfloat16.h
@@ -67,12 +67,14 @@ QT_BEGIN_NAMESPACE
class qfloat16
{
public:
-#ifndef Q_QDOC
- Q_DECL_CONSTEXPR inline qfloat16() Q_DECL_NOTHROW : b16(0) { }
- inline qfloat16(float f) Q_DECL_NOTHROW;
- inline operator float() const Q_DECL_NOTHROW;
-#endif
-
+ constexpr inline qfloat16() noexcept : b16(0) {}
+ inline qfloat16(float f) noexcept;
+ inline operator float() const noexcept;
+
+ // Support for qIs{Inf,NaN,Finite}:
+ bool isInf() const noexcept { return ((b16 >> 8) & 0x7e) == 0x7c; }
+ bool isNaN() const noexcept { return ((b16 >> 8) & 0x7e) == 0x7e; }
+ bool isFinite() const noexcept { return ((b16 >> 8) & 0x7c) != 0x7c; }
private:
quint16 b16;
@@ -82,27 +84,29 @@ private:
Q_CORE_EXPORT static const quint32 basetable[];
Q_CORE_EXPORT static const quint32 shifttable[];
- friend bool qIsNull(qfloat16 f) Q_DECL_NOTHROW;
- friend qfloat16 operator-(qfloat16 a) Q_DECL_NOTHROW;
+ friend bool qIsNull(qfloat16 f) noexcept;
+ friend qfloat16 operator-(qfloat16 a) noexcept;
};
Q_DECLARE_TYPEINFO(qfloat16, Q_PRIMITIVE_TYPE);
-Q_CORE_EXPORT void qFloatToFloat16(qfloat16 *, const float *, qsizetype length) Q_DECL_NOTHROW;
-Q_CORE_EXPORT void qFloatFromFloat16(float *, const qfloat16 *, qsizetype length) Q_DECL_NOTHROW;
+Q_CORE_EXPORT void qFloatToFloat16(qfloat16 *, const float *, qsizetype length) noexcept;
+Q_CORE_EXPORT void qFloatFromFloat16(float *, const qfloat16 *, qsizetype length) noexcept;
-Q_REQUIRED_RESULT Q_CORE_EXPORT bool qIsInf(qfloat16 f) Q_DECL_NOTHROW; // complements qnumeric.h
-Q_REQUIRED_RESULT Q_CORE_EXPORT bool qIsNaN(qfloat16 f) Q_DECL_NOTHROW; // complements qnumeric.h
-Q_REQUIRED_RESULT Q_CORE_EXPORT bool qIsFinite(qfloat16 f) Q_DECL_NOTHROW; // complements qnumeric.h
+// Complement qnumeric.h:
+Q_REQUIRED_RESULT inline bool qIsInf(qfloat16 f) noexcept { return f.isInf(); }
+Q_REQUIRED_RESULT inline bool qIsNaN(qfloat16 f) noexcept { return f.isNaN(); }
+Q_REQUIRED_RESULT inline bool qIsFinite(qfloat16 f) noexcept { return f.isFinite(); }
+// Q_REQUIRED_RESULT quint32 qFloatDistance(qfloat16 a, qfloat16 b);
// The remainder of these utility functions complement qglobal.h
-Q_REQUIRED_RESULT inline int qRound(qfloat16 d) Q_DECL_NOTHROW
+Q_REQUIRED_RESULT inline int qRound(qfloat16 d) noexcept
{ return qRound(static_cast<float>(d)); }
-Q_REQUIRED_RESULT inline qint64 qRound64(qfloat16 d) Q_DECL_NOTHROW
+Q_REQUIRED_RESULT inline qint64 qRound64(qfloat16 d) noexcept
{ return qRound64(static_cast<float>(d)); }
-Q_REQUIRED_RESULT inline bool qFuzzyCompare(qfloat16 p1, qfloat16 p2) Q_DECL_NOTHROW
+Q_REQUIRED_RESULT inline bool qFuzzyCompare(qfloat16 p1, qfloat16 p2) noexcept
{
float f1 = static_cast<float>(p1);
float f2 = static_cast<float>(p2);
@@ -115,18 +119,19 @@ Q_REQUIRED_RESULT inline bool qFuzzyCompare(qfloat16 p1, qfloat16 p2) Q_DECL_NOT
return (qAbs(f1 - f2) * 102.5f <= qMin(qAbs(f1), qAbs(f2)));
}
-Q_REQUIRED_RESULT inline bool qIsNull(qfloat16 f) Q_DECL_NOTHROW
+Q_REQUIRED_RESULT inline bool qIsNull(qfloat16 f) noexcept
{
return (f.b16 & static_cast<quint16>(0x7fff)) == 0;
}
-inline int qIntCast(qfloat16 f) Q_DECL_NOTHROW
+inline int qIntCast(qfloat16 f) noexcept
{ return int(static_cast<float>(f)); }
+#ifndef Q_QDOC
QT_WARNING_PUSH
QT_WARNING_DISABLE_CLANG("-Wc99-extensions")
QT_WARNING_DISABLE_GCC("-Wold-style-cast")
-inline qfloat16::qfloat16(float f) Q_DECL_NOTHROW
+inline qfloat16::qfloat16(float f) noexcept
{
#if defined(QT_COMPILER_SUPPORTS_F16C) && defined(__F16C__)
__m128 packsingle = _mm_set_ss(f);
@@ -144,7 +149,7 @@ inline qfloat16::qfloat16(float f) Q_DECL_NOTHROW
}
QT_WARNING_POP
-inline qfloat16::operator float() const Q_DECL_NOTHROW
+inline qfloat16::operator float() const noexcept
{
#if defined(QT_COMPILER_SUPPORTS_F16C) && defined(__F16C__)
__m128i packhalf = _mm_cvtsi32_si128(b16);
@@ -162,24 +167,25 @@ inline qfloat16::operator float() const Q_DECL_NOTHROW
return f;
#endif
}
+#endif
-inline qfloat16 operator-(qfloat16 a) Q_DECL_NOTHROW
+inline qfloat16 operator-(qfloat16 a) noexcept
{
qfloat16 f;
f.b16 = a.b16 ^ quint16(0x8000);
return f;
}
-inline qfloat16 operator+(qfloat16 a, qfloat16 b) Q_DECL_NOTHROW { return qfloat16(static_cast<float>(a) + static_cast<float>(b)); }
-inline qfloat16 operator-(qfloat16 a, qfloat16 b) Q_DECL_NOTHROW { return qfloat16(static_cast<float>(a) - static_cast<float>(b)); }
-inline qfloat16 operator*(qfloat16 a, qfloat16 b) Q_DECL_NOTHROW { return qfloat16(static_cast<float>(a) * static_cast<float>(b)); }
-inline qfloat16 operator/(qfloat16 a, qfloat16 b) Q_DECL_NOTHROW { return qfloat16(static_cast<float>(a) / static_cast<float>(b)); }
+inline qfloat16 operator+(qfloat16 a, qfloat16 b) noexcept { return qfloat16(static_cast<float>(a) + static_cast<float>(b)); }
+inline qfloat16 operator-(qfloat16 a, qfloat16 b) noexcept { return qfloat16(static_cast<float>(a) - static_cast<float>(b)); }
+inline qfloat16 operator*(qfloat16 a, qfloat16 b) noexcept { return qfloat16(static_cast<float>(a) * static_cast<float>(b)); }
+inline qfloat16 operator/(qfloat16 a, qfloat16 b) noexcept { return qfloat16(static_cast<float>(a) / static_cast<float>(b)); }
#define QF16_MAKE_ARITH_OP_FP(FP, OP) \
- inline FP operator OP(qfloat16 lhs, FP rhs) Q_DECL_NOTHROW { return static_cast<FP>(lhs) OP rhs; } \
- inline FP operator OP(FP lhs, qfloat16 rhs) Q_DECL_NOTHROW { return lhs OP static_cast<FP>(rhs); }
+ inline FP operator OP(qfloat16 lhs, FP rhs) noexcept { return static_cast<FP>(lhs) OP rhs; } \
+ inline FP operator OP(FP lhs, qfloat16 rhs) noexcept { return lhs OP static_cast<FP>(rhs); }
#define QF16_MAKE_ARITH_OP_EQ_FP(FP, OP_EQ, OP) \
- inline qfloat16& operator OP_EQ(qfloat16& lhs, FP rhs) Q_DECL_NOTHROW \
+ inline qfloat16& operator OP_EQ(qfloat16& lhs, FP rhs) noexcept \
{ lhs = qfloat16(float(static_cast<FP>(lhs) OP rhs)); return lhs; }
#define QF16_MAKE_ARITH_OP(FP) \
QF16_MAKE_ARITH_OP_FP(FP, +) \
@@ -197,8 +203,8 @@ QF16_MAKE_ARITH_OP(float)
#undef QF16_MAKE_ARITH_OP_FP
#define QF16_MAKE_ARITH_OP_INT(OP) \
- inline double operator OP(qfloat16 lhs, int rhs) Q_DECL_NOTHROW { return static_cast<double>(lhs) OP rhs; } \
- inline double operator OP(int lhs, qfloat16 rhs) Q_DECL_NOTHROW { return lhs OP static_cast<double>(rhs); }
+ inline double operator OP(qfloat16 lhs, int rhs) noexcept { return static_cast<double>(lhs) OP rhs; } \
+ inline double operator OP(int lhs, qfloat16 rhs) noexcept { return lhs OP static_cast<double>(rhs); }
QF16_MAKE_ARITH_OP_INT(+)
QF16_MAKE_ARITH_OP_INT(-)
QF16_MAKE_ARITH_OP_INT(*)
@@ -209,16 +215,16 @@ QT_WARNING_PUSH
QT_WARNING_DISABLE_CLANG("-Wfloat-equal")
QT_WARNING_DISABLE_GCC("-Wfloat-equal")
-inline bool operator>(qfloat16 a, qfloat16 b) Q_DECL_NOTHROW { return static_cast<float>(a) > static_cast<float>(b); }
-inline bool operator<(qfloat16 a, qfloat16 b) Q_DECL_NOTHROW { return static_cast<float>(a) < static_cast<float>(b); }
-inline bool operator>=(qfloat16 a, qfloat16 b) Q_DECL_NOTHROW { return static_cast<float>(a) >= static_cast<float>(b); }
-inline bool operator<=(qfloat16 a, qfloat16 b) Q_DECL_NOTHROW { return static_cast<float>(a) <= static_cast<float>(b); }
-inline bool operator==(qfloat16 a, qfloat16 b) Q_DECL_NOTHROW { return static_cast<float>(a) == static_cast<float>(b); }
-inline bool operator!=(qfloat16 a, qfloat16 b) Q_DECL_NOTHROW { return static_cast<float>(a) != static_cast<float>(b); }
+inline bool operator>(qfloat16 a, qfloat16 b) noexcept { return static_cast<float>(a) > static_cast<float>(b); }
+inline bool operator<(qfloat16 a, qfloat16 b) noexcept { return static_cast<float>(a) < static_cast<float>(b); }
+inline bool operator>=(qfloat16 a, qfloat16 b) noexcept { return static_cast<float>(a) >= static_cast<float>(b); }
+inline bool operator<=(qfloat16 a, qfloat16 b) noexcept { return static_cast<float>(a) <= static_cast<float>(b); }
+inline bool operator==(qfloat16 a, qfloat16 b) noexcept { return static_cast<float>(a) == static_cast<float>(b); }
+inline bool operator!=(qfloat16 a, qfloat16 b) noexcept { return static_cast<float>(a) != static_cast<float>(b); }
#define QF16_MAKE_BOOL_OP_FP(FP, OP) \
- inline bool operator OP(qfloat16 lhs, FP rhs) Q_DECL_NOTHROW { return static_cast<FP>(lhs) OP rhs; } \
- inline bool operator OP(FP lhs, qfloat16 rhs) Q_DECL_NOTHROW { return lhs OP static_cast<FP>(rhs); }
+ inline bool operator OP(qfloat16 lhs, FP rhs) noexcept { return static_cast<FP>(lhs) OP rhs; } \
+ inline bool operator OP(FP lhs, qfloat16 rhs) noexcept { return lhs OP static_cast<FP>(rhs); }
#define QF16_MAKE_BOOL_OP(FP) \
QF16_MAKE_BOOL_OP_FP(FP, <) \
QF16_MAKE_BOOL_OP_FP(FP, >) \
@@ -233,8 +239,8 @@ QF16_MAKE_BOOL_OP(float)
#undef QF16_MAKE_BOOL_OP_FP
#define QF16_MAKE_BOOL_OP_INT(OP) \
- inline bool operator OP(qfloat16 a, int b) Q_DECL_NOTHROW { return static_cast<float>(a) OP b; } \
- inline bool operator OP(int a, qfloat16 b) Q_DECL_NOTHROW { return a OP static_cast<float>(b); }
+ inline bool operator OP(qfloat16 a, int b) noexcept { return static_cast<float>(a) OP b; } \
+ inline bool operator OP(int a, qfloat16 b) noexcept { return a OP static_cast<float>(b); }
QF16_MAKE_BOOL_OP_INT(>)
QF16_MAKE_BOOL_OP_INT(<)
QF16_MAKE_BOOL_OP_INT(>=)
@@ -248,7 +254,7 @@ QT_WARNING_POP
/*!
\internal
*/
-Q_REQUIRED_RESULT inline bool qFuzzyIsNull(qfloat16 f) Q_DECL_NOTHROW
+Q_REQUIRED_RESULT inline bool qFuzzyIsNull(qfloat16 f) noexcept
{
return qAbs(static_cast<float>(f)) <= 0.001f;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 10:17:50 +0000