Rename qIsFuzzyNull to qFuzzyIsNull

The function was added in fde7f3d03782c801901f511131458d6fcb1021a5
and we believe qFuzzyIsNull is a better naming and more in line
with qFuzzyCompare.

Reviewed-by: Lars Knoll
Reviewed-by: nrc
Reviewed-by: Samuel

12 files changed, 82 insertions, 82 deletions

diff --git a/src/gui/painting/qbezier.cpp b/src/gui/painting/qbezier.cpp
index 1168b5a..7ed521e 100644
--- a/src/gui/painting/qbezier.cpp
+++ b/src/gui/painting/qbezier.cpp
@@ -127,13 +127,13 @@ static inline void flattenBezierWithoutInflections(QBezier &bez,
         qreal dy = bez.y2 - bez.y1;
 
         qreal normalized = qSqrt(dx * dx + dy * dy);
-        if (qIsFuzzyNull(normalized))
+        if (qFuzzyIsNull(normalized))
            break;
 
         qreal d = qAbs(dx * (bez.y3 - bez.y2) - dy * (bez.x3 - bez.x2));
 
         qreal t = qSqrt(4. / 3. * normalized * flatness / d);
-        if (t > 1 || qIsFuzzyNull(t - (qreal)1.))
+        if (t > 1 || qFuzzyIsNull(t - (qreal)1.))
             break;
         bez.parameterSplitLeft(t, &left);
         p->append(bez.pt1());
@@ -144,19 +144,19 @@ static inline void flattenBezierWithoutInflections(QBezier &bez,
 static inline int quadraticRoots(qreal a, qreal b, qreal c,
                                  qreal *x1, qreal *x2)
 {
-    if (qIsFuzzyNull(a)) {
-        if (qIsFuzzyNull(b))
+    if (qFuzzyIsNull(a)) {
+        if (qFuzzyIsNull(b))
             return 0;
         *x1 = *x2 = (-c / b);
         return 1;
     } else {
         const qreal det = b * b - 4 * a * c;
-        if (qIsFuzzyNull(det)) {
+        if (qFuzzyIsNull(det)) {
             *x1 = *x2 = -b / (2 * a);
             return 1;
         }
         if (det > 0) {
-            if (qIsFuzzyNull(b)) {
+            if (qFuzzyIsNull(b)) {
                 *x2 = qSqrt(-c / a);
                 *x1 = -(*x2);
                 return 2;
@@ -187,7 +187,7 @@ static inline bool findInflections(qreal a, qreal b, qreal c,
             *t1 = r2;
             *t2 = r1;
         }
-        if (!qIsFuzzyNull(a))
+        if (!qFuzzyIsNull(a))
             *tCups = 0.5 * (-b / a);
         else
             *tCups = 2;
@@ -243,7 +243,7 @@ void QBezier::addToPolygonMixed(QPolygonF *polygon) const
     qreal b = 6 * (ay * cx - ax * cy);
     qreal c = 2 * (by * cx - bx * cy);
 
-    if ((qIsFuzzyNull(a) && qIsFuzzyNull(b)) ||
+    if ((qFuzzyIsNull(a) && qFuzzyIsNull(b)) ||
         (b * b - 4 * a *c) < 0) {
         QBezier bez(*this);
         flattenBezierWithoutInflections(bez, polygon);
@@ -447,7 +447,7 @@ static ShiftResult shift(const QBezier *orig, QBezier *shifted, qreal offset, qr
         qreal r = 1.0 + prev_normal.x() * next_normal.x()
                   + prev_normal.y() * next_normal.y();
 
-        if (qIsFuzzyNull(r)) {
+        if (qFuzzyIsNull(r)) {
             points_shifted[i] = points[i] + offset * prev_normal;
         } else {
             qreal k = offset / r;
@@ -477,12 +477,12 @@ static bool addCircle(const QBezier *b, qreal offset, QBezier *o)
 
     normals[0] = QPointF(b->y2 - b->y1, b->x1 - b->x2);
     qreal dist = qSqrt(normals[0].x()*normals[0].x() + normals[0].y()*normals[0].y());
-    if (qIsFuzzyNull(dist))
+    if (qFuzzyIsNull(dist))
         return false;
     normals[0] /= dist;
     normals[2] = QPointF(b->y4 - b->y3, b->x3 - b->x4);
     dist = qSqrt(normals[2].x()*normals[2].x() + normals[2].y()*normals[2].y());
-    if (qIsFuzzyNull(dist))
+    if (qFuzzyIsNull(dist))
         return false;
     normals[2] /= dist;
 
@@ -1022,7 +1022,7 @@ int QBezier::stationaryYPoints(qreal &t0, qreal &t1) const
 
     QList<qreal> result;
 
-    if (qIsFuzzyNull(reciprocal)) {
+    if (qFuzzyIsNull(reciprocal)) {
         t0 = -b / (2 * a);
         return 1;
     } else if (reciprocal > 0) {
diff --git a/src/gui/painting/qcolor.cpp b/src/gui/painting/qcolor.cpp
index 6eecea0..24d167e 100644
--- a/src/gui/painting/qcolor.cpp
+++ b/src/gui/painting/qcolor.cpp
@@ -1387,7 +1387,7 @@ QColor QColor::toHsv() const
     const qreal min = Q_MIN_3(r, g, b);
     const qreal delta = max - min;
     color.ct.ahsv.value = qRound(max * USHRT_MAX);
-    if (qIsFuzzyNull(delta)) {
+    if (qFuzzyIsNull(delta)) {
         // achromatic case, hue is undefined
         color.ct.ahsv.hue = USHRT_MAX;
         color.ct.ahsv.saturation = 0;
@@ -1441,7 +1441,7 @@ QColor QColor::toCmyk() const
     // cmy -> cmyk
     const qreal k = qMin(c, qMin(m, y));
 
-    if (!qIsFuzzyNull(k - 1)) {
+    if (!qFuzzyIsNull(k - 1)) {
         c = (c - k) / (1.0 - k);
         m = (m - k) / (1.0 - k);
         y = (y - k) / (1.0 - k);
diff --git a/src/gui/painting/qmatrix.h b/src/gui/painting/qmatrix.h
index 71c1e34..1e5fbb4 100644
--- a/src/gui/painting/qmatrix.h
+++ b/src/gui/painting/qmatrix.h
@@ -99,7 +99,7 @@ public:
     QMatrix &shear(qreal sh, qreal sv);
     QMatrix &rotate(qreal a);
 
-    bool isInvertible() const { return !qIsFuzzyNull(_m11*_m22 - _m12*_m21); }
+    bool isInvertible() const { return !qFuzzyIsNull(_m11*_m22 - _m12*_m21); }
     qreal det() const { return _m11*_m22 - _m12*_m21; }
 
     QMatrix inverted(bool *invertible = 0) const;
@@ -161,8 +161,8 @@ Q_GUI_EXPORT QPainterPath operator *(const QPainterPath &p, const QMatrix &m);
 
 inline bool QMatrix::isIdentity() const
 {
-    return qIsFuzzyNull(_m11 - 1) && qIsFuzzyNull(_m22 - 1) && qIsFuzzyNull(_m12)
-           && qIsFuzzyNull(_m21) && qIsFuzzyNull(_dx) && qIsFuzzyNull(_dy);
+    return qFuzzyIsNull(_m11 - 1) && qFuzzyIsNull(_m22 - 1) && qFuzzyIsNull(_m12)
+           && qFuzzyIsNull(_m21) && qFuzzyIsNull(_dx) && qFuzzyIsNull(_dy);
 }
 
 /*****************************************************************************
diff --git a/src/gui/painting/qpaintengine_d3d.cpp b/src/gui/painting/qpaintengine_d3d.cpp
index 4b494d1..9a7638b 100644
--- a/src/gui/painting/qpaintengine_d3d.cpp
+++ b/src/gui/painting/qpaintengine_d3d.cpp
@@ -2506,8 +2506,8 @@ void QD3DDrawHelper::addTrap(const Trapezoid &trap)
     qreal _rightA = (qreal)_w/_h;
     qreal _rightB = topRightX - _rightA * topRightY;
 
-    qreal invLeftA = qIsFuzzyNull(_leftA) ? 0.0 : 1.0 / _leftA;
-    qreal invRightA = qIsFuzzyNull(_rightA) ? 0.0 : 1.0 / _rightA;
+    qreal invLeftA = qFuzzyIsNull(_leftA) ? 0.0 : 1.0 / _leftA;
+    qreal invRightA = qFuzzyIsNull(_rightA) ? 0.0 : 1.0 / _rightA;
 
     vertex v1 = { {1.f, top - 1.f, 0.5f}, 0.f,
         top, bottom, invLeftA, -invRightA,
@@ -2970,7 +2970,7 @@ qreal calculateAngle(qreal dx, qreal dy)
 {
     qreal angle;
 
-    if (qIsFuzzyNull(dx)) {
+    if (qFuzzyIsNull(dx)) {
         angle = (dy < 0) ? -M_PI/2 : M_PI/2;
     } else {
         angle = atanf(dy/dx);
diff --git a/src/gui/painting/qpaintengine_raster.cpp b/src/gui/painting/qpaintengine_raster.cpp
index 7aab25c..92160f9 100644
--- a/src/gui/painting/qpaintengine_raster.cpp
+++ b/src/gui/painting/qpaintengine_raster.cpp
@@ -618,22 +618,22 @@ void QRasterPaintEngine::updateMatrix(const QTransform &matrix)
     d->isPlain45DegreeRotation = false;
     if (txop >= QTransform::TxRotate) {
         d->isPlain45DegreeRotation =
-            (qIsFuzzyNull(matrix.m11())
-             && qIsFuzzyNull(matrix.m12() - qreal(1))
-             && qIsFuzzyNull(matrix.m21() + qreal(1))
-             && qIsFuzzyNull(matrix.m22())
+            (qFuzzyIsNull(matrix.m11())
+             && qFuzzyIsNull(matrix.m12() - qreal(1))
+             && qFuzzyIsNull(matrix.m21() + qreal(1))
+             && qFuzzyIsNull(matrix.m22())
                 )
             ||
-            (qIsFuzzyNull(matrix.m11() + qreal(1))
-             && qIsFuzzyNull(matrix.m12())
-             && qIsFuzzyNull(matrix.m21())
-             && qIsFuzzyNull(matrix.m22() + qreal(1))
+            (qFuzzyIsNull(matrix.m11() + qreal(1))
+             && qFuzzyIsNull(matrix.m12())
+             && qFuzzyIsNull(matrix.m21())
+             && qFuzzyIsNull(matrix.m22() + qreal(1))
                 )
             ||
-            (qIsFuzzyNull(matrix.m11())
-             && qIsFuzzyNull(matrix.m12() + qreal(1))
-             && qIsFuzzyNull(matrix.m21() - qreal(1))
-             && qIsFuzzyNull(matrix.m22())
+            (qFuzzyIsNull(matrix.m11())
+             && qFuzzyIsNull(matrix.m12() + qreal(1))
+             && qFuzzyIsNull(matrix.m21() - qreal(1))
+             && qFuzzyIsNull(matrix.m22())
                 )
             ;
     }
diff --git a/src/gui/painting/qpainter.cpp b/src/gui/painting/qpainter.cpp
index d4271ae..133520e 100644
--- a/src/gui/painting/qpainter.cpp
+++ b/src/gui/painting/qpainter.cpp
@@ -6055,22 +6055,22 @@ void QPainter::drawTextItem(const QPointF &p, const QTextItem &_ti)
         const QTransform &m = d->state->matrix;
         if (d->state->matrix.type() < QTransform::TxShear) {
             bool isPlain90DegreeRotation =
-                (qIsFuzzyNull(m.m11())
-                 && qIsFuzzyNull(m.m12() - qreal(1))
-                 && qIsFuzzyNull(m.m21() + qreal(1))
-                 && qIsFuzzyNull(m.m22())
+                (qFuzzyIsNull(m.m11())
+                 && qFuzzyIsNull(m.m12() - qreal(1))
+                 && qFuzzyIsNull(m.m21() + qreal(1))
+                 && qFuzzyIsNull(m.m22())
                     )
                 ||
-                (qIsFuzzyNull(m.m11() + qreal(1))
-                 && qIsFuzzyNull(m.m12())
-                 && qIsFuzzyNull(m.m21())
-                 && qIsFuzzyNull(m.m22() + qreal(1))
+                (qFuzzyIsNull(m.m11() + qreal(1))
+                 && qFuzzyIsNull(m.m12())
+                 && qFuzzyIsNull(m.m21())
+                 && qFuzzyIsNull(m.m22() + qreal(1))
                     )
                 ||
-                (qIsFuzzyNull(m.m11())
-                 && qIsFuzzyNull(m.m12() + qreal(1))
-                 && qIsFuzzyNull(m.m21() - qreal(1))
-                 && qIsFuzzyNull(m.m22())
+                (qFuzzyIsNull(m.m11())
+                 && qFuzzyIsNull(m.m12() + qreal(1))
+                 && qFuzzyIsNull(m.m21() - qreal(1))
+                 && qFuzzyIsNull(m.m22())
                     )
                 ;
             aa = !isPlain90DegreeRotation;
diff --git a/src/gui/painting/qpainterpath.cpp b/src/gui/painting/qpainterpath.cpp
index de8969c..d471aaa 100644
--- a/src/gui/painting/qpainterpath.cpp
+++ b/src/gui/painting/qpainterpath.cpp
@@ -1299,10 +1299,10 @@ static QRectF qt_painterpath_bezier_extrema(const QBezier &b)
         qreal bx = QT_BEZIER_B(b, x);
         qreal cx = QT_BEZIER_C(b, x);
         // specialcase quadratic curves to avoid div by zero
-        if (qIsFuzzyNull(ax)) {
+        if (qFuzzyIsNull(ax)) {
 
             // linear curves are covered by initialization.
-            if (!qIsFuzzyNull(bx)) {
+            if (!qFuzzyIsNull(bx)) {
                 qreal t = -cx / bx;
                 QT_BEZIER_CHECK_T(b, t);
             }
@@ -1329,10 +1329,10 @@ static QRectF qt_painterpath_bezier_extrema(const QBezier &b)
         qreal cy = QT_BEZIER_C(b, y);
 
         // specialcase quadratic curves to avoid div by zero
-        if (qIsFuzzyNull(ay)) {
+        if (qFuzzyIsNull(ay)) {
 
             // linear curves are covered by initialization.
-            if (!qIsFuzzyNull(by)) {
+            if (!qFuzzyIsNull(by)) {
                 qreal t = -cy / by;
                 QT_BEZIER_CHECK_T(b, t);
             }
diff --git a/src/gui/painting/qpathclipper.cpp b/src/gui/painting/qpathclipper.cpp
index 33609ad..9ef3eb7 100644
--- a/src/gui/painting/qpathclipper.cpp
+++ b/src/gui/painting/qpathclipper.cpp
@@ -138,11 +138,11 @@ bool QIntersectionFinder::linesIntersect(const QLineF &a, const QLineF &b) const
 
     const qreal par = pDelta.x() * qDelta.y() - pDelta.y() * qDelta.x();
 
-    if (qIsFuzzyNull(par)) {
+    if (qFuzzyIsNull(par)) {
         const QPointF normal(-pDelta.y(), pDelta.x());
 
         // coinciding?
-        if (qIsFuzzyNull(dot(normal, q1 - p1))) {
+        if (qFuzzyIsNull(dot(normal, q1 - p1))) {
             const qreal dp = dot(pDelta, pDelta);
 
             const qreal tq1 = dot(pDelta, q1 - p1);
@@ -202,13 +202,13 @@ void QIntersectionFinder::intersectBeziers(const QBezier &one, const QBezier &tw
         qreal alpha_q = t.at(i).second;
 
         QPointF pt;
-        if (qIsFuzzyNull(alpha_p)) {
+        if (qFuzzyIsNull(alpha_p)) {
             pt = one.pt1();
-        } else if (qIsFuzzyNull(alpha_p - 1)) {
+        } else if (qFuzzyIsNull(alpha_p - 1)) {
             pt = one.pt4();
-        } else if (qIsFuzzyNull(alpha_q)) {
+        } else if (qFuzzyIsNull(alpha_q)) {
             pt = two.pt1();
-        } else if (qIsFuzzyNull(alpha_q - 1)) {
+        } else if (qFuzzyIsNull(alpha_q - 1)) {
             pt = two.pt4();
         } else {
             pt = one.pointAt(alpha_p);
@@ -250,11 +250,11 @@ void QIntersectionFinder::intersectLines(const QLineF &a, const QLineF &b, QData
 
     const qreal par = pDelta.x() * qDelta.y() - pDelta.y() * qDelta.x();
 
-    if (qIsFuzzyNull(par)) {
+    if (qFuzzyIsNull(par)) {
         const QPointF normal(-pDelta.y(), pDelta.x());
 
         // coinciding?
-        if (qIsFuzzyNull(dot(normal, q1 - p1))) {
+        if (qFuzzyIsNull(dot(normal, q1 - p1))) {
             const qreal invDp = 1 / dot(pDelta, pDelta);
 
             const qreal tq1 = dot(pDelta, q1 - p1) * invDp;
@@ -315,11 +315,11 @@ void QIntersectionFinder::intersectLines(const QLineF &a, const QLineF &b, QData
     if (tp<0 || tp>1 || tq<0 || tq>1)
         return;
 
-    const bool p_zero = qIsFuzzyNull(tp);
-    const bool p_one = qIsFuzzyNull(tp - 1);
+    const bool p_zero = qFuzzyIsNull(tp);
+    const bool p_one = qFuzzyIsNull(tp - 1);
 
-    const bool q_zero = qIsFuzzyNull(tq);
-    const bool q_one = qIsFuzzyNull(tq - 1);
+    const bool q_zero = qFuzzyIsNull(tq);
+    const bool q_one = qFuzzyIsNull(tq - 1);
 
     if ((q_zero || q_one) && (p_zero || p_one))
         return;
@@ -922,7 +922,7 @@ qreal QWingedEdge::delta(int vertex, int a, int b) const
 
     qreal result = b_angle - a_angle;
 
-    if (qIsFuzzyNull(result) || qFuzzyCompare(result, 128))
+    if (qFuzzyIsNull(result) || qFuzzyCompare(result, 128))
         return 0;
 
     if (result < 0)
@@ -951,7 +951,7 @@ static inline QPointF tangentAt(const QWingedEdge &list, int vi, int ei)
     if (ep->bezier) {
         normal = ep->bezier->derivedAt(t);
 
-        if (qIsFuzzyNull(normal.x()) && qIsFuzzyNull(normal.y()))
+        if (qFuzzyIsNull(normal.x()) && qFuzzyIsNull(normal.y()))
             normal = ep->bezier->secondDerivedAt(t);
     } else {
         const QPointF a = *list.vertex(ep->first);
@@ -1080,7 +1080,7 @@ QWingedEdge::TraversalStatus QWingedEdge::findInsertStatus(int vi, int ei) const
         qDebug() << "Delta to edge" << status.edge << d2 << ", angles: " << op->angle << op->invAngle;
 #endif
 
-        if (!(qIsFuzzyNull(d2) && isLeftOf(*this, vi, status.edge, ei))
+        if (!(qFuzzyIsNull(d2) && isLeftOf(*this, vi, status.edge, ei))
             && (d2 < d || (qFuzzyCompare(d2, d) && isLeftOf(*this, vi, status.edge, position)))) {
             position = status.edge;
             d = d2;
@@ -1232,10 +1232,10 @@ int QWingedEdge::addEdge(int fi, int si, const QBezier *bezier, qreal t0, qreal
         QPointF aTangent = bezier->derivedAt(t0);
         QPointF bTangent = -bezier->derivedAt(t1);
 
-        if (qIsFuzzyNull(aTangent.x()) && qIsFuzzyNull(aTangent.y()))
+        if (qFuzzyIsNull(aTangent.x()) && qFuzzyIsNull(aTangent.y()))
             aTangent = bezier->secondDerivedAt(t0);
 
-        if (qIsFuzzyNull(bTangent.x()) && qIsFuzzyNull(bTangent.y()))
+        if (qFuzzyIsNull(bTangent.x()) && qFuzzyIsNull(bTangent.y()))
             bTangent = bezier->secondDerivedAt(t1);
 
         ep->angle = computeAngle(aTangent);
@@ -1400,7 +1400,7 @@ static void addLineTo(QPainterPath &path, const QPointF &point)
 
             const QPointF p(-d1.y(), d1.x());
 
-            if (qIsFuzzyNull(dot(p, d2))) {
+            if (qFuzzyIsNull(dot(p, d2))) {
                 path.setElementPositionAt(elementCount - 1, point.x(), point.y());
                 return;
             }
diff --git a/src/gui/painting/qstroker.cpp b/src/gui/painting/qstroker.cpp
index 3a856d3..5fffc72 100644
--- a/src/gui/painting/qstroker.cpp
+++ b/src/gui/painting/qstroker.cpp
@@ -763,7 +763,7 @@ template <class Iterator> bool qt_stroke_side(Iterator *it,
 
 qreal qt_t_for_arc_angle(qreal angle)
 {
-    if (qIsFuzzyNull(angle))
+    if (qFuzzyIsNull(angle))
         return 0;
 
     if (qFuzzyCompare(angle, qreal(90)))
@@ -904,13 +904,13 @@ QPointF qt_curves_for_arc(const QRectF &rect, qreal startAngle, qreal sweepLengt
     }
 
     // avoid empty start segment
-    if (qIsFuzzyNull(startT - qreal(1))) {
+    if (qFuzzyIsNull(startT - qreal(1))) {
         startT = 0;
         startSegment += delta;
     }
 
     // avoid empty end segment
-    if (qIsFuzzyNull(endT)) {
+    if (qFuzzyIsNull(endT)) {
         endT = 1;
         endSegment -= delta;
     }
@@ -918,8 +918,8 @@ QPointF qt_curves_for_arc(const QRectF &rect, qreal startAngle, qreal sweepLengt
     startT = qt_t_for_arc_angle(startT * 90);
     endT = qt_t_for_arc_angle(endT * 90);
 
-    const bool splitAtStart = !qIsFuzzyNull(startT);
-    const bool splitAtEnd = !qIsFuzzyNull(endT - qreal(1));
+    const bool splitAtStart = !qFuzzyIsNull(startT);
+    const bool splitAtEnd = !qFuzzyIsNull(endT - qreal(1));
 
     const int end = endSegment + delta;
 
@@ -1018,7 +1018,7 @@ void QDashStroker::processCurrentSubpath()
         sumLength += dashes[i];
     }
 
-    if (qIsFuzzyNull(sumLength))
+    if (qFuzzyIsNull(sumLength))
         return;
 
     Q_ASSERT(dashCount > 0);
diff --git a/src/gui/painting/qtessellator.cpp b/src/gui/painting/qtessellator.cpp
index ae07565..ce5ab74 100644
--- a/src/gui/painting/qtessellator.cpp
+++ b/src/gui/painting/qtessellator.cpp
@@ -1436,7 +1436,7 @@ void QTessellator::tessellateRect(const QPointF &a_, const QPointF &b_, qreal wi
         QPointF perp(pb.y() - pa.y(), pa.x() - pb.x());
         qreal length = qSqrt(perp.x() * perp.x() + perp.y() * perp.y());
 
-        if (qIsFuzzyNull(length))
+        if (qFuzzyIsNull(length))
             return;
 
         // need the half of the width
diff --git a/src/gui/painting/qtransform.cpp b/src/gui/painting/qtransform.cpp
index 6c37ab6..dfcca63 100644
--- a/src/gui/painting/qtransform.cpp
+++ b/src/gui/painting/qtransform.cpp
@@ -353,8 +353,8 @@ QTransform QTransform::inverted(bool *invertible) const
         invert.affine._dy = -affine._dy;
         break;
     case TxScale:
-        inv = !qIsFuzzyNull(affine._m11);
-        inv &= !qIsFuzzyNull(affine._m22);
+        inv = !qFuzzyIsNull(affine._m11);
+        inv &= !qFuzzyIsNull(affine._m22);
         if (inv) {
             invert.affine._m11 = 1. / affine._m11;
             invert.affine._m22 = 1. / affine._m22;
@@ -369,7 +369,7 @@ QTransform QTransform::inverted(bool *invertible) const
     default:
         // general case
         qreal det = determinant();
-        inv = !qIsFuzzyNull(det);
+        inv = !qFuzzyIsNull(det);
         if (inv)
             invert = adjoint() / det;
         break;
@@ -1958,27 +1958,27 @@ QTransform::TransformationType QTransform::type() const
 
     switch (static_cast<TransformationType>(m_dirty)) {
     case TxProject:
-        if (!qIsFuzzyNull(m_13) || !qIsFuzzyNull(m_23) || !qIsFuzzyNull(m_33 - 1)) {
+        if (!qFuzzyIsNull(m_13) || !qFuzzyIsNull(m_23) || !qFuzzyIsNull(m_33 - 1)) {
              m_type = TxProject;
              break;
          }
     case TxShear:
     case TxRotate:
-        if (!qIsFuzzyNull(affine._m12) || !qIsFuzzyNull(affine._m21)) {
+        if (!qFuzzyIsNull(affine._m12) || !qFuzzyIsNull(affine._m21)) {
             const qreal dot = affine._m11 * affine._m12 + affine._m21 * affine._m22;
-            if (qIsFuzzyNull(dot))
+            if (qFuzzyIsNull(dot))
                 m_type = TxRotate;
             else
                 m_type = TxShear;
             break;
         }
     case TxScale:
-        if (!qIsFuzzyNull(affine._m11 - 1) || !qIsFuzzyNull(affine._m22 - 1)) {
+        if (!qFuzzyIsNull(affine._m11 - 1) || !qFuzzyIsNull(affine._m22 - 1)) {
             m_type = TxScale;
             break;
         }
     case TxTranslate:
-        if (!qIsFuzzyNull(affine._dx) || !qIsFuzzyNull(affine._dy)) {
+        if (!qFuzzyIsNull(affine._dx) || !qFuzzyIsNull(affine._dy)) {
             m_type = TxTranslate;
             break;
         }
diff --git a/src/gui/painting/qtransform.h b/src/gui/painting/qtransform.h
index 2d6c889..aac7c31 100644
--- a/src/gui/painting/qtransform.h
+++ b/src/gui/painting/qtransform.h
@@ -204,7 +204,7 @@ inline bool QTransform::isIdentity() const
 
 inline bool QTransform::isInvertible() const
 {
-    return !qIsFuzzyNull(determinant());
+    return !qFuzzyIsNull(determinant());
 }
 
 inline bool QTransform::isScaling() const