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qFuzzy(Compare|IsNull)(): mark as noexcept

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These all cannot fail, so can and should be noexcept. Most were
already.

Found in API-review.

[ChangeLog][QtCore/QtGui] All qFuzzyCompare() and qFuzzyIsNull()
overloads are now noexcept.

Pick-to: 6.8
Change-Id: I67a2981ea4af9be0370becf84103822fd766ab5e
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
This commit is contained in:
Marc Mutz 2024-08-27 17:05:14 +02:00
parent 5028ff12d6
commit 6a3a28236c
4 changed files with 7 additions and 7 deletions
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8
src/corelib/global/qnumeric.h
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@ -366,22 +366,22 @@ template <typename T>
constexpr inline const T &min(const T &a, const T &b) { return (a < b) ? a : b; }
}
[[nodiscard]] constexpr bool qFuzzyCompare(double p1, double p2)
[[nodiscard]] constexpr bool qFuzzyCompare(double p1, double p2) noexcept
{
return (qAbs(p1 - p2) * 1000000000000. <= QtPrivate::min(qAbs(p1), qAbs(p2)));
}
[[nodiscard]] constexpr bool qFuzzyCompare(float p1, float p2)
[[nodiscard]] constexpr bool qFuzzyCompare(float p1, float p2) noexcept
{
return (qAbs(p1 - p2) * 100000.f <= QtPrivate::min(qAbs(p1), qAbs(p2)));
}
[[nodiscard]] constexpr bool qFuzzyIsNull(double d)
[[nodiscard]] constexpr bool qFuzzyIsNull(double d) noexcept
{
return qAbs(d) <= 0.000000000001;
}
[[nodiscard]] constexpr bool qFuzzyIsNull(float f)
[[nodiscard]] constexpr bool qFuzzyIsNull(float f) noexcept
{
return qAbs(f) <= 0.00001f;
}

2
src/gui/math3d/qmatrix4x4.cpp
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@ -735,7 +735,7 @@ QMatrix4x4 operator/(const QMatrix4x4& matrix, float divisor)
Returns \c true if \a m1 and \a m2 are equal, allowing for a small
fuzziness factor for floating-point comparisons; false otherwise.
*/
bool qFuzzyCompare(const QMatrix4x4& m1, const QMatrix4x4& m2)
bool qFuzzyCompare(const QMatrix4x4& m1, const QMatrix4x4& m2) noexcept
{
return qFuzzyCompare(m1.m[0][0], m2.m[0][0]) &&
qFuzzyCompare(m1.m[0][1], m2.m[0][1]) &&

2
src/gui/math3d/qmatrix4x4.h
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@ -93,7 +93,7 @@ public:
friend QMatrix4x4 operator*(const QMatrix4x4& matrix, float factor);
friend Q_GUI_EXPORT QMatrix4x4 operator/(const QMatrix4x4& matrix, float divisor);
friend Q_GUI_EXPORT bool qFuzzyCompare(const QMatrix4x4& m1, const QMatrix4x4& m2);
friend Q_GUI_EXPORT bool qFuzzyCompare(const QMatrix4x4& m1, const QMatrix4x4& m2) noexcept;
#ifndef QT_NO_VECTOR3D
void scale(const QVector3D& vector);

2
src/gui/painting/qtransform.h
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@ -304,7 +304,7 @@ inline QTransform &QTransform::operator-=(qreal num)
QT_WARNING_POP
inline bool qFuzzyCompare(const QTransform& t1, const QTransform& t2)
inline bool qFuzzyCompare(const QTransform& t1, const QTransform& t2) noexcept
{
return qFuzzyCompare(t1.m11(), t2.m11())
&& qFuzzyCompare(t1.m12(), t2.m12())