stop calling SkScalarDiv

BUG=skia:
TBR=

Review URL: https://codereview.chromium.org/1135053002

37 files changed, 75 insertions, 96 deletions

diff --git a/src/animator/SkAnimateBase.cpp b/src/animator/SkAnimateBase.cpp
index 3515ed5cb3..82f777ef39 100644
--- a/src/animator/SkAnimateBase.cpp
+++ b/src/animator/SkAnimateBase.cpp
@@ -91,7 +91,7 @@ void SkAnimateBase::dump(SkAnimateMaker* maker) {
         SkDebugf("to=\"%s\" ", to.c_str());
     }
     if (begin != 0) {
-        SkDebugf("begin=\"%g\" ", SkScalarToFloat(SkScalarDiv(begin,1000)));
+        SkDebugf("begin=\"%g\" ", begin * 0.001);
     }
 }
 #endif
diff --git a/src/animator/SkAnimateField.cpp b/src/animator/SkAnimateField.cpp
index 7aebb78288..c6676e5be7 100644
--- a/src/animator/SkAnimateField.cpp
+++ b/src/animator/SkAnimateField.cpp
@@ -41,7 +41,7 @@ void SkAnimate::dump(SkAnimateMaker* maker) {
             SkDebugf("mirror=\"true\" ");
         if (fReset)
             SkDebugf("reset=\"true\" ");
-        SkDebugf("dur=\"%g\" ", SkScalarToFloat(SkScalarDiv(dur,1000)));
+        SkDebugf("dur=\"%g\" ", dur * 0.001);
         if (repeat != SK_Scalar1)
             SkDebugf("repeat=\"%g\" ", SkScalarToFloat(repeat));
         //if (fHasValues)
diff --git a/src/animator/SkAnimateSet.cpp b/src/animator/SkAnimateSet.cpp
index d146118e89..ec06a9e666 100644
--- a/src/animator/SkAnimateSet.cpp
+++ b/src/animator/SkAnimateSet.cpp
@@ -39,7 +39,7 @@ SkSet::SkSet() {
 void SkSet::dump(SkAnimateMaker* maker) {
     INHERITED::dump(maker);
     if (dur != 1) {
-        SkDebugf("dur=\"%g\" ", SkScalarToFloat(SkScalarDiv(dur,1000)));
+        SkDebugf("dur=\"%g\" ", dur * 0.001);
     }
     //don't want double />\n's
     SkDebugf("/>\n");
diff --git a/src/animator/SkAnimatorScript.cpp b/src/animator/SkAnimatorScript.cpp
index df2e5637a2..f4ea51890f 100644
--- a/src/animator/SkAnimatorScript.cpp
+++ b/src/animator/SkAnimatorScript.cpp
@@ -235,7 +235,7 @@ bool SkAnimatorScript::EvalMemberCommon(SkScriptEngine* engine, const SkMemberIn
             if (info->fType != SkType_MemberProperty && info->fType != SkType_MemberFunction)
                 value->fOperand.fS32 = *(int32_t*) info->memberData(displayable);   // OK for SkScalar too
             if (type == SkType_MSec) {
-                value->fOperand.fScalar = SkScalarDiv((SkScalar) value->fOperand.fS32, 1000); // dividing two ints is the same as dividing two scalars
+                value->fOperand.fScalar = value->fOperand.fS32 * 0.001f;
                 type = SkType_Float;
             }
             break;
diff --git a/src/animator/SkAnimatorScript2.cpp b/src/animator/SkAnimatorScript2.cpp
index 80ae0c6aa8..28912fb6d0 100644
--- a/src/animator/SkAnimatorScript2.cpp
+++ b/src/animator/SkAnimatorScript2.cpp
@@ -412,7 +412,7 @@ bool SkAnimatorScript2::evalMemberCommon(const SkMemberInfo* info,
             if (info->fType != SkType_MemberProperty && info->fType != SkType_MemberFunction)
                 value->fS32 = *(int32_t*) info->memberData(displayable);    // OK for SkScalar too
             if (type == SkType_MSec) {
-                value->fScalar = SkScalarDiv((SkScalar) value->fS32, 1000); // dividing two ints is the same as dividing two scalars
+                value->fScalar = value->fS32 * 0.001f;
                 type = SkType_Float;
             }
             break;
diff --git a/src/animator/SkDisplayPost.cpp b/src/animator/SkDisplayPost.cpp
index cc45b216ba..0fd4a06753 100644
--- a/src/animator/SkDisplayPost.cpp
+++ b/src/animator/SkDisplayPost.cpp
@@ -76,7 +76,7 @@ void SkPost::dump(SkAnimateMaker* maker) {
     delete eventType;
 
     if (delay > 0) {
-        SkDebugf("delay=\"%g\" ", SkScalarToFloat(SkScalarDiv(delay, 1000)));
+        SkDebugf("delay=\"%g\" ", delay * 0.001);
     }
 //  if (initialized == false)
 //      SkDebugf("(uninitialized) ");
diff --git a/src/animator/SkDisplayable.cpp b/src/animator/SkDisplayable.cpp
index aff3aaefc6..52532fedcd 100644
--- a/src/animator/SkDisplayable.cpp
+++ b/src/animator/SkDisplayable.cpp
@@ -377,7 +377,7 @@ void SkDisplayable::dumpValues(const SkMemberInfo* info, SkDisplayTypes type, Sk
         break;
     case SkType_MSec:
         if (op.fS32 != blankOp.fS32) {
-            SkDebugf(" %s=\"%g\"  ", info->fName, SkScalarToFloat(SkScalarDiv(op.fS32, 1000)));
+            SkDebugf(" %s=\"%g\"  ", info->fName, op.fS32 * 0.001);
         }
     default:
         SkDebugf("");
diff --git a/src/animator/SkDrawColor.cpp b/src/animator/SkDrawColor.cpp
index eb57d9dad4..d86a2e93e7 100644
--- a/src/animator/SkDrawColor.cpp
+++ b/src/animator/SkDrawColor.cpp
@@ -30,14 +30,14 @@ static SkScalar RGB_to_HSV(SkColor color, HSV_Choice choice) {
     if (choice == kGetValue)
         return value/255;
     SkScalar delta = value - min;
-    SkScalar saturation = value == 0 ? 0 : SkScalarDiv(delta, value);
+    SkScalar saturation = value == 0 ? 0 : delta / value;
     if (choice == kGetSaturation)
         return saturation;
     SkScalar hue;
     if (saturation == 0)
         hue = 0;
     else {
-        SkScalar part60 = SkScalarDiv(60 * SK_Scalar1, delta);
+        SkScalar part60 = 60 / delta;
         if (red == value) {
             hue = SkScalarMul(green - blue, part60);
             if (hue < 0)
diff --git a/src/animator/SkScript.cpp b/src/animator/SkScript.cpp
index 1d04d1b276..c430695705 100644
--- a/src/animator/SkScript.cpp
+++ b/src/animator/SkScript.cpp
@@ -1387,7 +1387,7 @@ bool SkScriptEngine::processOp() {
             if (operand2.fScalar == 0)
                 operand2.fScalar = operand1.fScalar == 0 ? SK_ScalarNaN : operand1.fScalar > 0 ? SK_ScalarMax : -SK_ScalarMax;
             else
-                operand2.fScalar = SkScalarDiv(operand1.fScalar, operand2.fScalar);
+                operand2.fScalar = operand1.fScalar / operand2.fScalar;
             break;
         case kEqualInt:
             operand2.fS32 = operand1.fS32 == operand2.fS32;
diff --git a/src/animator/SkScriptRuntime.cpp b/src/animator/SkScriptRuntime.cpp
index 78d9d5c208..07bd4c9c2f 100644
--- a/src/animator/SkScriptRuntime.cpp
+++ b/src/animator/SkScriptRuntime.cpp
@@ -249,7 +249,7 @@ bool SkScriptRuntime::executeTokens(unsigned char* opCode) {
                 operand[0].fScalar = operand[0].fScalar == 0 ? SK_ScalarNaN :
                     operand[0].fScalar > 0 ? SK_ScalarMax : -SK_ScalarMax;
             else
-                operand[0].fScalar = SkScalarDiv(operand[0].fScalar, operand[1].fScalar);
+                operand[0].fScalar = operand[0].fScalar / operand[1].fScalar;
             break;
         case SkScriptEngine2::kEqualInt:
             operand[0].fS32 = operand[0].fS32 == operand[1].fS32;
diff --git a/src/core/SkGeometry.cpp b/src/core/SkGeometry.cpp
index 3ee2fa5d26..b4489d28e3 100644
--- a/src/core/SkGeometry.cpp
+++ b/src/core/SkGeometry.cpp
@@ -62,7 +62,7 @@ static int valid_unit_divide(SkScalar numer, SkScalar denom, SkScalar* ratio) {
         return 0;
     }
 
-    SkScalar r = SkScalarDiv(numer, denom);
+    SkScalar r = numer / denom;
     if (SkScalarIsNaN(r)) {
         return 0;
     }
@@ -1149,7 +1149,7 @@ static SkScalar conic_eval_pos(const SkScalar src[], SkScalar w, SkScalar t) {
     A = -B;
     SkScalar denom = SkScalarMulAdd(SkScalarMulAdd(A, t, B), t, C);
 
-    return SkScalarDiv(numer, denom);
+    return numer / denom;
 }
 
 // F' = 2 (C t (1 + t (-1 + w)) - A (-1 + t) (t (-1 + w) - w) + B (1 - 2 t) w)
diff --git a/src/core/SkPaint.cpp b/src/core/SkPaint.cpp
index 975d0ccc07..c00dcc6b4f 100644
--- a/src/core/SkPaint.cpp
+++ b/src/core/SkPaint.cpp
@@ -2313,7 +2313,7 @@ SkTextToPathIter::SkTextToPathIter( const char text[], size_t length,
         fPaint.setTextSize(SkIntToScalar(SkPaint::kCanonicalTextSizeForPaths));
         fScale = paint.getTextSize() / SkPaint::kCanonicalTextSizeForPaths;
         if (has_thick_frame(fPaint)) {
-            fPaint.setStrokeWidth(SkScalarDiv(fPaint.getStrokeWidth(), fScale));
+            fPaint.setStrokeWidth(fPaint.getStrokeWidth() / fScale);
         }
     } else {
         fScale = SK_Scalar1;
diff --git a/src/core/SkPathMeasure.cpp b/src/core/SkPathMeasure.cpp
index c963e9cf35..a5dd84048c 100644
--- a/src/core/SkPathMeasure.cpp
+++ b/src/core/SkPathMeasure.cpp
@@ -341,8 +341,7 @@ static void seg_to(const SkPoint pts[], int segType,
                 if (SK_Scalar1 == stopT) {
                     dst->quadTo(tmp0[3], tmp0[4]);
                 } else {
-                    SkChopQuadAt(&tmp0[2], tmp1, SkScalarDiv(stopT - startT,
-                                                         SK_Scalar1 - startT));
+                    SkChopQuadAt(&tmp0[2], tmp1, (stopT - startT) / (1 - startT));
                     dst->quadTo(tmp1[1], tmp1[2]);
                 }
             }
@@ -383,8 +382,7 @@ static void seg_to(const SkPoint pts[], int segType,
                 if (SK_Scalar1 == stopT) {
                     dst->cubicTo(tmp0[4], tmp0[5], tmp0[6]);
                 } else {
-                    SkChopCubicAt(&tmp0[3], tmp1, SkScalarDiv(stopT - startT,
-                                                        SK_Scalar1 - startT));
+                    SkChopCubicAt(&tmp0[3], tmp1, (stopT - startT) / (1 - startT));
                     dst->cubicTo(tmp1[1], tmp1[2], tmp1[3]);
                 }
             }
diff --git a/src/core/SkPictureShader.cpp b/src/core/SkPictureShader.cpp
index 2c835ed93e..c1c4755058 100644
--- a/src/core/SkPictureShader.cpp
+++ b/src/core/SkPictureShader.cpp
@@ -168,7 +168,7 @@ SkShader* SkPictureShader::refBitmapShader(const SkMatrix& matrix, const SkMatri
     static const SkScalar kMaxTileArea = 2048 * 2048;
     SkScalar tileArea = SkScalarMul(scaledSize.width(), scaledSize.height());
     if (tileArea > kMaxTileArea) {
-        SkScalar clampScale = SkScalarSqrt(SkScalarDiv(kMaxTileArea, tileArea));
+        SkScalar clampScale = SkScalarSqrt(kMaxTileArea / tileArea);
         scaledSize.set(SkScalarMul(scaledSize.width(), clampScale),
                        SkScalarMul(scaledSize.height(), clampScale));
     }
@@ -176,8 +176,7 @@ SkShader* SkPictureShader::refBitmapShader(const SkMatrix& matrix, const SkMatri
     // Scale down the tile size if larger than maxTextureSize for GPU Path or it should fail on create texture
     if (maxTextureSize) {
         if (scaledSize.width() > maxTextureSize || scaledSize.height() > maxTextureSize) {
-            SkScalar downScale = SkScalarDiv(maxTextureSize,
-                                            SkMax32(scaledSize.width(), scaledSize.height()));
+            SkScalar downScale = maxTextureSize / SkMax32(scaledSize.width(), scaledSize.height());
             scaledSize.set(SkScalarFloorToScalar(SkScalarMul(scaledSize.width(), downScale)),
                            SkScalarFloorToScalar(SkScalarMul(scaledSize.height(), downScale)));
         }
diff --git a/src/core/SkRRect.cpp b/src/core/SkRRect.cpp
index e54256009a..0d1887d792 100644
--- a/src/core/SkRRect.cpp
+++ b/src/core/SkRRect.cpp
@@ -26,8 +26,7 @@ void SkRRect::setRectXY(const SkRect& rect, SkScalar xRad, SkScalar yRad) {
     }
 
     if (rect.width() < xRad+xRad || rect.height() < yRad+yRad) {
-        SkScalar scale = SkMinScalar(SkScalarDiv(rect.width(), xRad + xRad),
-                                     SkScalarDiv(rect.height(), yRad + yRad));
+        SkScalar scale = SkMinScalar(rect.width() / (xRad + xRad), rect.height() / (yRad + yRad));
         SkASSERT(scale < SK_Scalar1);
         xRad = SkScalarMul(xRad, scale);
         yRad = SkScalarMul(yRad, scale);
@@ -66,10 +65,10 @@ void SkRRect::setNinePatch(const SkRect& rect, SkScalar leftRad, SkScalar topRad
 
     SkScalar scale = SK_Scalar1;
     if (leftRad + rightRad > rect.width()) {
-        scale = SkScalarDiv(rect.width(), leftRad + rightRad);
+        scale = rect.width() / (leftRad + rightRad);
     }
     if (topRad + bottomRad > rect.height()) {
-        scale = SkMinScalar(scale, SkScalarDiv(rect.height(), topRad + bottomRad));
+        scale = SkMinScalar(scale, rect.height() / (topRad + bottomRad));
     }
 
     if (scale < SK_Scalar1) {
diff --git a/src/core/SkScalar.cpp b/src/core/SkScalar.cpp
index c48d3890ad..e8f6e93348 100644
--- a/src/core/SkScalar.cpp
+++ b/src/core/SkScalar.cpp
@@ -31,6 +31,6 @@ SkScalar SkScalarInterpFunc(SkScalar searchKey, const SkScalar keys[],
     // Otherwise, interpolate between right - 1 and right.
     SkScalar rightKey = keys[right];
     SkScalar leftKey = keys[right-1];
-    SkScalar fract = SkScalarDiv(searchKey-leftKey,rightKey-leftKey);
+    SkScalar fract = (searchKey - leftKey) / (rightKey - leftKey);
     return SkScalarInterp(values[right-1], values[right], fract);
 }
diff --git a/src/core/SkStroke.cpp b/src/core/SkStroke.cpp
index a3641ffc4f..6454f1694d 100644
--- a/src/core/SkStroke.cpp
+++ b/src/core/SkStroke.cpp
@@ -454,8 +454,7 @@ void SkPathStroker::quad_to(const SkPoint pts[3],
         normalB = pts[2] - pts[0];
         normalB.rotateCCW();
         SkScalar dot = SkPoint::DotProduct(unitNormalAB, *unitNormalBC);
-        SkAssertResult(normalB.setLength(SkScalarDiv(fRadius,
-                                     SkScalarSqrt((SK_Scalar1 + dot)/2))));
+        SkAssertResult(normalB.setLength(fRadius / SkScalarSqrt((SK_Scalar1 + dot)/2)));
 
         fOuter.quadTo(  pts[1].fX + normalB.fX, pts[1].fY + normalB.fY,
                         pts[2].fX + normalBC->fX, pts[2].fY + normalBC->fY);
@@ -761,11 +760,9 @@ DRAW_LINE:
         normalC = *unitNormalCD + unitBC;
 
         SkScalar dot = SkPoint::DotProduct(unitNormalAB, unitBC);
-        SkAssertResult(normalB.setLength(SkScalarDiv(fRadius,
-                                    SkScalarSqrt((SK_Scalar1 + dot)/2))));
+        SkAssertResult(normalB.setLength(fRadius / SkScalarSqrt((SK_Scalar1 + dot)/2)));
         dot = SkPoint::DotProduct(*unitNormalCD, unitBC);
-        SkAssertResult(normalC.setLength(SkScalarDiv(fRadius,
-                                    SkScalarSqrt((SK_Scalar1 + dot)/2))));
+        SkAssertResult(normalC.setLength(fRadius / SkScalarSqrt((SK_Scalar1 + dot)/2)));
 
         fOuter.cubicTo( pts[1].fX + normalB.fX, pts[1].fY + normalB.fY,
                         pts[2].fX + normalC.fX, pts[2].fY + normalC.fY,
diff --git a/src/core/SkStrokerPriv.cpp b/src/core/SkStrokerPriv.cpp
index bc8e0435a1..7fc773a114 100644
--- a/src/core/SkStrokerPriv.cpp
+++ b/src/core/SkStrokerPriv.cpp
@@ -214,7 +214,7 @@ static void MiterJoiner(SkPath* outer, SkPath* inner, const SkVector& beforeUnit
     else
         mid.set(before.fX + after.fX, before.fY + after.fY);
 
-    mid.setLength(SkScalarDiv(radius, sinHalfAngle));
+    mid.setLength(radius / sinHalfAngle);
 DO_MITER:
     if (prevIsLine)
         outer->setLastPt(pivot.fX + mid.fX, pivot.fY + mid.fY);
diff --git a/src/device/xps/SkXPSDevice.cpp b/src/device/xps/SkXPSDevice.cpp
index a5c001393d..1c06235aef 100644
--- a/src/device/xps/SkXPSDevice.cpp
+++ b/src/device/xps/SkXPSDevice.cpp
@@ -512,7 +512,7 @@ static void transform_offsets(SkScalar* stopOffsets, const int numOffsets,
         SkScalar startToStop = (stopTransformed.fX - startTransformed.fX)
                              + (stopTransformed.fY - startTransformed.fY);
         //Percentage along transformed line.
-        stopOffsets[i] = SkScalarDiv(startToStop, startToEnd);
+        stopOffsets[i] = startToStop / startToEnd;
     }
 }
 
@@ -1396,10 +1396,8 @@ void SkXPSDevice::convertToPpm(const SkMaskFilter* filter,
                                SkVector* ppuScale,
                                const SkIRect& clip, SkIRect* clipIRect) {
     //This action is in unit space, but the ppm is specified in physical space.
-    ppuScale->fX = SkScalarDiv(this->fCurrentPixelsPerMeter.fX,
-                               this->fCurrentUnitsPerMeter.fX);
-    ppuScale->fY = SkScalarDiv(this->fCurrentPixelsPerMeter.fY,
-                               this->fCurrentUnitsPerMeter.fY);
+    ppuScale->set(fCurrentPixelsPerMeter.fX / fCurrentUnitsPerMeter.fX,
+                  fCurrentPixelsPerMeter.fY / fCurrentUnitsPerMeter.fY);
 
     matrix->postScale(ppuScale->fX, ppuScale->fY);
 
diff --git a/src/effects/SkCornerPathEffect.cpp b/src/effects/SkCornerPathEffect.cpp
index 79d4c4cbd3..4b81f261fe 100644
--- a/src/effects/SkCornerPathEffect.cpp
+++ b/src/effects/SkCornerPathEffect.cpp
@@ -20,13 +20,12 @@ static bool ComputeStep(const SkPoint& a, const SkPoint& b, SkScalar radius,
                         SkPoint* step) {
     SkScalar dist = SkPoint::Distance(a, b);
 
-    step->set(b.fX - a.fX, b.fY - a.fY);
-
+    *step = b - a;
     if (dist <= radius * 2) {
-        step->scale(SK_ScalarHalf);
+        *step *= SK_ScalarHalf;
         return false;
     } else {
-        step->scale(SkScalarDiv(radius, dist));
+        *step *= radius / dist;
         return true;
     }
 }
@@ -47,6 +46,7 @@ bool SkCornerPathEffect::filterPath(SkPath* dst, const SkPath& src,
     bool        prevIsValid = true;
 
     // to avoid warnings
+    step.set(0, 0);
     moveTo.set(0, 0);
     firstStep.set(0, 0);
     lastCorner.set(0, 0);
diff --git a/src/effects/SkDashPathEffect.cpp b/src/effects/SkDashPathEffect.cpp
index 5296f972d5..62e6771356 100644
--- a/src/effects/SkDashPathEffect.cpp
+++ b/src/effects/SkDashPathEffect.cpp
@@ -248,7 +248,7 @@ bool SkDashPathEffect::asPoints(PointData* results,
                 len2 -= clampedInitialDashLength; // skip initial partial empty
             }
         }
-        int numMidPoints = SkScalarFloorToInt(SkScalarDiv(len2, fIntervalLength));
+        int numMidPoints = SkScalarFloorToInt(len2 / fIntervalLength);
         results->fNumPoints += numMidPoints;
         len2 -= numMidPoints * fIntervalLength;
         bool partialLast = false;
diff --git a/src/effects/SkDisplacementMapEffect.cpp b/src/effects/SkDisplacementMapEffect.cpp
index 6f0911ce68..2b9665c2c8 100644
--- a/src/effects/SkDisplacementMapEffect.cpp
+++ b/src/effects/SkDisplacementMapEffect.cpp
@@ -56,7 +56,7 @@ void computeDisplacement(const SkVector& scale, SkBitmap* dst,
                          SkBitmap* src,
                          const SkIRect& bounds)
 {
-    static const SkScalar Inv8bit = SkScalarDiv(SK_Scalar1, 255.0f);
+    static const SkScalar Inv8bit = SkScalarInvert(255);
     const int srcW = src->width();
     const int srcH = src->height();
     const SkVector scaleForColor = SkVector::Make(SkScalarMul(scale.fX, Inv8bit),
@@ -625,8 +625,8 @@ void GrGLDisplacementMapEffect::setData(const GrGLProgramDataManager& pdman,
                                         const GrProcessor& proc) {
     const GrDisplacementMapEffect& displacementMap = proc.cast<GrDisplacementMapEffect>();
     GrTexture* colorTex = displacementMap.texture(1);
-    SkScalar scaleX = SkScalarDiv(displacementMap.scale().fX, SkIntToScalar(colorTex->width()));
-    SkScalar scaleY = SkScalarDiv(displacementMap.scale().fY, SkIntToScalar(colorTex->height()));
+    SkScalar scaleX = displacementMap.scale().fX / colorTex->width();
+    SkScalar scaleY = displacementMap.scale().fY / colorTex->height();
     pdman.set2f(fScaleUni, SkScalarToFloat(scaleX),
                 colorTex->origin() == kTopLeft_GrSurfaceOrigin ?
                 SkScalarToFloat(scaleY) : SkScalarToFloat(-scaleY));
diff --git a/src/effects/SkEmbossMaskFilter.cpp b/src/effects/SkEmbossMaskFilter.cpp
index 8fcd272646..59d297835e 100644
--- a/src/effects/SkEmbossMaskFilter.cpp
+++ b/src/effects/SkEmbossMaskFilter.cpp
@@ -61,7 +61,7 @@ static void normalize(SkScalar v[3]) {
     mag = SkScalarSqrt(mag);
 
     for (int i = 0; i < 3; i++) {
-        v[i] = SkScalarDiv(v[i], mag);
+        v[i] /= mag;
     }
 }
 
diff --git a/src/effects/SkLightingImageFilter.cpp b/src/effects/SkLightingImageFilter.cpp
index 39bd6c88a1..b324cc46d1 100644
--- a/src/effects/SkLightingImageFilter.cpp
+++ b/src/effects/SkLightingImageFilter.cpp
@@ -30,8 +30,8 @@ typedef GrGLProgramDataManager::UniformHandle UniformHandle;
 
 namespace {
 
-const SkScalar gOneThird = SkScalarInvert(SkIntToScalar(3));
-const SkScalar gTwoThirds = SkScalarDiv(SkIntToScalar(2), SkIntToScalar(3));
+const SkScalar gOneThird = SkIntToScalar(1) / 3;
+const SkScalar gTwoThirds = SkIntToScalar(2) / 3;
 const SkScalar gOneHalf = 0.5f;
 const SkScalar gOneQuarter = 0.25f;
 
diff --git a/src/effects/SkPerlinNoiseShader.cpp b/src/effects/SkPerlinNoiseShader.cpp
index 7114703168..c59bd8c120 100644
--- a/src/effects/SkPerlinNoiseShader.cpp
+++ b/src/effects/SkPerlinNoiseShader.cpp
@@ -212,8 +212,7 @@ private:
             SkScalar highFrequencx =
                 SkScalarCeilToScalar(tileWidth * fBaseFrequency.fX) / tileWidth;
             // BaseFrequency should be non-negative according to the standard.
-            if (SkScalarDiv(fBaseFrequency.fX, lowFrequencx) <
-                SkScalarDiv(highFrequencx, fBaseFrequency.fX)) {
+            if (fBaseFrequency.fX / lowFrequencx < highFrequencx / fBaseFrequency.fX) {
                 fBaseFrequency.fX = lowFrequencx;
             } else {
                 fBaseFrequency.fX = highFrequencx;
@@ -224,8 +223,7 @@ private:
                 SkScalarFloorToScalar(tileHeight * fBaseFrequency.fY) / tileHeight;
             SkScalar highFrequency =
                 SkScalarCeilToScalar(tileHeight * fBaseFrequency.fY) / tileHeight;
-            if (SkScalarDiv(fBaseFrequency.fY, lowFrequency) <
-                SkScalarDiv(highFrequency, fBaseFrequency.fY)) {
+            if (fBaseFrequency.fY / lowFrequency < highFrequency / fBaseFrequency.fY) {
                 fBaseFrequency.fY = lowFrequency;
             } else {
                 fBaseFrequency.fY = highFrequency;
@@ -384,8 +382,9 @@ SkScalar SkPerlinNoiseShader::PerlinNoiseShaderContext::calculateTurbulenceValue
     SkScalar ratio = SK_Scalar1;
     for (int octave = 0; octave < perlinNoiseShader.fNumOctaves; ++octave) {
         SkScalar noise = noise2D(channel, stitchData, noiseVector);
-        turbulenceFunctionResult += SkScalarDiv(
-            (perlinNoiseShader.fType == kFractalNoise_Type) ? noise : SkScalarAbs(noise), ratio);
+        SkScalar numer = (perlinNoiseShader.fType == kFractalNoise_Type) ?
+                            noise : SkScalarAbs(noise);
+        turbulenceFunctionResult += numer / ratio;
         noiseVector.fX *= 2;
         noiseVector.fY *= 2;
         ratio *= 2;
@@ -406,8 +405,7 @@ SkScalar SkPerlinNoiseShader::PerlinNoiseShaderContext::calculateTurbulenceValue
     }
 
     if (channel == 3) { // Scale alpha by paint value
-        turbulenceFunctionResult = SkScalarMul(turbulenceFunctionResult,
-            SkScalarDiv(SkIntToScalar(getPaintAlpha()), SkIntToScalar(255)));
+        turbulenceFunctionResult *= SkIntToScalar(getPaintAlpha()) / 255;
     }
 
     // Clamp result
@@ -931,7 +929,7 @@ void GrGLPerlinNoise::setData(const GrGLProgramDataManager& pdman, const GrProce
 
     const SkVector& baseFrequency = turbulence.baseFrequency();
     pdman.set2f(fBaseFrequencyUni, baseFrequency.fX, baseFrequency.fY);
-    pdman.set1f(fAlphaUni, SkScalarDiv(SkIntToScalar(turbulence.alpha()), SkIntToScalar(255)));
+    pdman.set1f(fAlphaUni, SkIntToScalar(turbulence.alpha()) / 255);
 
     if (turbulence.stitchTiles()) {
         const SkPerlinNoiseShader::StitchData& stitchData = turbulence.stitchData();
diff --git a/src/effects/gradients/SkTwoPointConicalGradient_gpu.cpp b/src/effects/gradients/SkTwoPointConicalGradient_gpu.cpp
index bc70d6bca4..f7b3eb89b2 100644
--- a/src/effects/gradients/SkTwoPointConicalGradient_gpu.cpp
+++ b/src/effects/gradients/SkTwoPointConicalGradient_gpu.cpp
@@ -357,7 +357,7 @@ static ConicalType set_matrix_focal_conical(const SkTwoPointConicalGradient& sha
 
     // Scale factor 1 / (1 - focalX * focalX)
     SkScalar oneMinusF2 = 1.f - SkScalarMul(*focalX, *focalX);
-    SkScalar s = SkScalarDiv(1.f, oneMinusF2);
+    SkScalar s = SkScalarInvert(oneMinusF2);
 
 
     if (s >= 0.f) {
@@ -1115,8 +1115,7 @@ private:
         : INHERITED(ctx, shader, matrix, tm), fInfo(info) {
         this->initClassID<CircleOutside2PtConicalEffect>();
         if (shader.getStartRadius() != shader.getEndRadius()) {
-            fTLimit = SkScalarDiv(shader.getStartRadius(),
-                                  (shader.getStartRadius() - shader.getEndRadius()));
+            fTLimit = shader.getStartRadius() / (shader.getStartRadius() - shader.getEndRadius());
         } else {
             fTLimit = SK_ScalarMin;
         }
diff --git a/src/gpu/GrAAConvexPathRenderer.cpp b/src/gpu/GrAAConvexPathRenderer.cpp
index fea943b436..c68410fc6a 100644
--- a/src/gpu/GrAAConvexPathRenderer.cpp
+++ b/src/gpu/GrAAConvexPathRenderer.cpp
@@ -105,7 +105,7 @@ static void center_of_mass(const SegmentArray& segments, SkPoint* c) {
         *c = avg;
     } else {
         area *= 3;
-        area = SkScalarDiv(SK_Scalar1, area);
+        area = SkScalarInvert(area);
         center.fX = SkScalarMul(center.fX, area);
         center.fY = SkScalarMul(center.fY, area);
         // undo the translate of p0 to the origin.
diff --git a/src/gpu/GrOvalRenderer.cpp b/src/gpu/GrOvalRenderer.cpp
index ebac42fcac..b562167424 100644
--- a/src/gpu/GrOvalRenderer.cpp
+++ b/src/gpu/GrOvalRenderer.cpp
@@ -1253,11 +1253,11 @@ public:
             const SkRect& bounds = geom.fBounds;
 
             // This adjusts the "radius" to include the half-pixel border
-            SkScalar offsetDx = SkScalarDiv(geom.fGeoDx, xRadius);
-            SkScalar offsetDy = SkScalarDiv(geom.fGeoDy, yRadius);
+            SkScalar offsetDx = geom.fGeoDx / xRadius;
+            SkScalar offsetDy = geom.fGeoDy / yRadius;
 
-            SkScalar innerRatioX = SkScalarDiv(xRadius, geom.fInnerXRadius);
-            SkScalar innerRatioY = SkScalarDiv(yRadius, geom.fInnerYRadius);
+            SkScalar innerRatioX = xRadius / geom.fInnerXRadius;
+            SkScalar innerRatioY = yRadius / geom.fInnerYRadius;
 
             verts[0].fPos = SkPoint::Make(bounds.fLeft, bounds.fTop);
             verts[0].fOuterOffset = SkPoint::Make(-1.0f - offsetDx, -1.0f - offsetDy);
@@ -1386,8 +1386,8 @@ static GrBatch* create_diellipse_batch(GrColor color,
     SkScalar b = viewMatrix[SkMatrix::kMSkewX];
     SkScalar c = viewMatrix[SkMatrix::kMSkewY];
     SkScalar d = viewMatrix[SkMatrix::kMScaleY];
-    SkScalar geoDx = SkScalarDiv(SK_ScalarHalf, SkScalarSqrt(a*a + c*c));
-    SkScalar geoDy = SkScalarDiv(SK_ScalarHalf, SkScalarSqrt(b*b + d*d));
+    SkScalar geoDx = SK_ScalarHalf / SkScalarSqrt(a*a + c*c);
+    SkScalar geoDy = SK_ScalarHalf / SkScalarSqrt(b*b + d*d);
 
     DIEllipseBatch::Geometry geometry;
     geometry.fViewMatrix = viewMatrix;
diff --git a/src/gpu/GrPathUtils.cpp b/src/gpu/GrPathUtils.cpp
index 2a906664f2..3e2c3bfe66 100644
--- a/src/gpu/GrPathUtils.cpp
+++ b/src/gpu/GrPathUtils.cpp
@@ -29,8 +29,7 @@ SkScalar GrPathUtils::scaleToleranceToSrc(SkScalar devTol,
             stretch = SkMaxScalar(stretch, mat.mapRadius(SK_Scalar1));
         }
     }
-    srcTol = SkScalarDiv(srcTol, stretch);
-    return srcTol;
+    return srcTol / stretch;
 }
 
 static const int MAX_POINTS_PER_CURVE = 1 << 10;
@@ -51,7 +50,7 @@ uint32_t GrPathUtils::quadraticPointCount(const SkPoint points[],
         // subdivide x = log4(d/tol) times. x subdivisions creates 2^(x)
         // points.
         // 2^(log4(x)) = sqrt(x);
-        SkScalar divSqrt = SkScalarSqrt(SkScalarDiv(d, tol));
+        SkScalar divSqrt = SkScalarSqrt(d / tol);
         if (((SkScalar)SK_MaxS32) <= divSqrt) {
             return MAX_POINTS_PER_CURVE;
         } else {
@@ -107,11 +106,11 @@ uint32_t GrPathUtils::cubicPointCount(const SkPoint points[],
     if (d <= tol) {
         return 1;
     } else {
-        SkScalar divSqrt = SkScalarSqrt(SkScalarDiv(d, tol));
+        SkScalar divSqrt = SkScalarSqrt(d / tol);
         if (((SkScalar)SK_MaxS32) <= divSqrt) {
             return MAX_POINTS_PER_CURVE;
         } else {
-            int temp = SkScalarCeilToInt(SkScalarSqrt(SkScalarDiv(d, tol)));
+            int temp = SkScalarCeilToInt(SkScalarSqrt(d / tol));
             int pow2 = GrNextPow2(temp);
             // Because of NaNs & INFs we can wind up with a degenerate temp
             // such that pow2 comes out negative. Also, our point generator
diff --git a/src/gpu/effects/GrDashingEffect.cpp b/src/gpu/effects/GrDashingEffect.cpp
index bd2997cdf3..1ca56487c2 100644
--- a/src/gpu/effects/GrDashingEffect.cpp
+++ b/src/gpu/effects/GrDashingEffect.cpp
@@ -135,10 +135,10 @@ static SkScalar calc_end_adjustment(const SkScalar intervals[2], const SkPoint p
     }
     SkScalar srcIntervalLen = intervals[0] + intervals[1];
     SkScalar totalLen = pts[1].fX - pts[0].fX;
-    SkScalar temp = SkScalarDiv(totalLen, srcIntervalLen);
+    SkScalar temp = totalLen / srcIntervalLen;
     SkScalar numFullIntervals = SkScalarFloorToScalar(temp);
     *endingInt = totalLen - numFullIntervals * srcIntervalLen + phase;
-    temp = SkScalarDiv(*endingInt, srcIntervalLen);
+    temp = *endingInt / srcIntervalLen;
     *endingInt = *endingInt - SkScalarFloorToScalar(temp) * srcIntervalLen;
     if (0 == *endingInt) {
         *endingInt = srcIntervalLen;
diff --git a/src/pdf/SkPDFDevice.cpp b/src/pdf/SkPDFDevice.cpp
index 814504e5e8..3b0d6f72ae 100644
--- a/src/pdf/SkPDFDevice.cpp
+++ b/src/pdf/SkPDFDevice.cpp
@@ -39,15 +39,12 @@
 
 static void emit_pdf_color(SkColor color, SkWStream* result) {
     SkASSERT(SkColorGetA(color) == 0xFF);  // We handle alpha elsewhere.
-    SkScalar colorMax = SkIntToScalar(0xFF);
-    SkPDFUtils::AppendScalar(
-            SkScalarDiv(SkIntToScalar(SkColorGetR(color)), colorMax), result);
+    SkScalar colorScale = SkScalarInvert(0xFF);
+    SkPDFUtils::AppendScalar(SkColorGetR(color) * colorScale, result);
     result->writeText(" ");
-    SkPDFUtils::AppendScalar(
-            SkScalarDiv(SkIntToScalar(SkColorGetG(color)), colorMax), result);
+    SkPDFUtils::AppendScalar(SkColorGetG(color) * colorScale, result);
     result->writeText(" ");
-    SkPDFUtils::AppendScalar(
-            SkScalarDiv(SkIntToScalar(SkColorGetB(color)), colorMax), result);
+    SkPDFUtils::AppendScalar(SkColorGetB(color) * colorScale, result);
     result->writeText(" ");
 }
 
diff --git a/src/pdf/SkPDFGraphicState.cpp b/src/pdf/SkPDFGraphicState.cpp
index d063c1505e..6cf66456ab 100644
--- a/src/pdf/SkPDFGraphicState.cpp
+++ b/src/pdf/SkPDFGraphicState.cpp
@@ -201,7 +201,7 @@ void SkPDFGraphicState::emitObject(SkWStream* stream,
     SkAutoTUnref<SkPDFDict> dict(SkNEW_ARGS(SkPDFDict, ("ExtGState")));
     dict->insertName("Type", "ExtGState");
 
-    SkScalar alpha = SkScalarDiv(fAlpha, 0xFF);
+    SkScalar alpha = SkIntToScalar(fAlpha) / 0xFF;
     dict->insertScalar("CA", alpha);
     dict->insertScalar("ca", alpha);
 
diff --git a/src/pdf/SkPDFShader.cpp b/src/pdf/SkPDFShader.cpp
index c2f0bc4677..c627c14257 100644
--- a/src/pdf/SkPDFShader.cpp
+++ b/src/pdf/SkPDFShader.cpp
@@ -58,7 +58,7 @@ static void interpolateColorCode(SkScalar range, SkScalar* curColor,
     // Figure out how to scale each color component.
     SkScalar multiplier[kColorComponents];
     for (int i = 0; i < kColorComponents; i++) {
-        multiplier[i] = SkScalarDiv(curColor[i] - prevColor[i], range);
+        multiplier[i] = (curColor[i] - prevColor[i]) / range;
     }
 
     // Calculate when we no longer need to keep a copy of the input parameter t.
@@ -1132,7 +1132,7 @@ SkPDFShader::State::State(const SkShader& shader, const SkMatrix& canvasTransfor
             static const SkScalar kMaxBitmapArea = 1024 * 1024;
             SkScalar bitmapArea = rasterScale * bbox.width() * rasterScale * bbox.height();
             if (bitmapArea > kMaxBitmapArea) {
-                rasterScale *= SkScalarSqrt(SkScalarDiv(kMaxBitmapArea, bitmapArea));
+                rasterScale *= SkScalarSqrt(kMaxBitmapArea / bitmapArea);
             }
 
             SkISize size = SkISize::Make(SkScalarRoundToInt(rasterScale * bbox.width()),
diff --git a/src/ports/SkFontHost_FreeType.cpp b/src/ports/SkFontHost_FreeType.cpp
index 4b8345a94c..4b6738e7e4 100644
--- a/src/ports/SkFontHost_FreeType.cpp
+++ b/src/ports/SkFontHost_FreeType.cpp
@@ -1198,8 +1198,7 @@ void SkScalerContext_FreeType::generateMetrics(SkGlyph* glyph) {
     // This means do not try to scale embedded bitmaps; only scale bitmaps in bitmap only fonts.
     if (!FT_IS_SCALABLE(fFace) && fScaleY && fFace->size->metrics.y_ppem) {
         // NOTE: both dimensions are scaled by y_ppem. this is WAI.
-        scaleGlyphMetrics(*glyph, SkScalarDiv(SkFixedToScalar(fScaleY),
-                                              SkIntToScalar(fFace->size->metrics.y_ppem)));
+        scaleGlyphMetrics(*glyph, SkFixedToScalar(fScaleY) / fFace->size->metrics.y_ppem);
     }
 
 #ifdef ENABLE_GLYPH_SPEW
diff --git a/src/svg/parser/SkSVGSVG.cpp b/src/svg/parser/SkSVGSVG.cpp
index fcce62de9e..61ccb3c819 100644
--- a/src/svg/parser/SkSVGSVG.cpp
+++ b/src/svg/parser/SkSVGSVG.cpp
@@ -43,11 +43,8 @@ void SkSVGSVG::translate(SkSVGParser& parser, bool defState) {
     if (strcmp(wSuffix, "pt") == 0)
         width = SkScalarMulDiv(width, SK_Scalar1 * 72, SK_Scalar1 * 96);
     SkParse::FindScalars(f_viewBox.c_str(), viewBox, 4);
-    SkRect box;
-    box.fLeft = SkScalarDiv(viewBox[0], width);
-    box.fTop = SkScalarDiv(viewBox[1], height);
-    box.fRight = SkScalarDiv(viewBox[2], width);
-    box.fBottom = SkScalarDiv(viewBox[3], height);
+    SkRect box = SkRect::MakeLTRB(viewBox[0] / width, viewBox[1] / height,
+                                  viewBox[2] / width, viewBox[3] / height);
     if (box.fLeft == 0 && box.fTop == 0 &&
         box.fRight == SK_Scalar1 && box.fBottom == SK_Scalar1)
             return;
diff --git a/src/utils/SkInterpolator.cpp b/src/utils/SkInterpolator.cpp
index 97574e475b..03e7e4a83f 100644
--- a/src/utils/SkInterpolator.cpp
+++ b/src/utils/SkInterpolator.cpp
@@ -62,8 +62,7 @@ SkScalar SkInterpolatorBase::ComputeRelativeT(SkMSec time, SkMSec prevTime,
                                   SkMSec nextTime, const SkScalar blend[4]) {
     SkASSERT(time > prevTime && time < nextTime);
 
-    SkScalar t = SkScalarDiv((SkScalar)(time - prevTime),
-                             (SkScalar)(nextTime - prevTime));
+    SkScalar t = (SkScalar)(time - prevTime) / (SkScalar)(nextTime - prevTime);
     return blend ?
             SkUnitCubicInterp(t, blend[0], blend[1], blend[2], blend[3]) : t;
 }
diff --git a/src/utils/SkNinePatch.cpp b/src/utils/SkNinePatch.cpp
index 4e0d1d1a39..ce8d4801c6 100644
--- a/src/utils/SkNinePatch.cpp
+++ b/src/utils/SkNinePatch.cpp
@@ -161,7 +161,7 @@ void SkNinePatch::DrawMesh(SkCanvas* canvas, const SkRect& bounds,
         if (bounds.width() >= fixed)
             stretchX = (bounds.width() - fixed) / stretchSize;
         else // reuse stretchX, but keep it negative as a signal
-            stretchX = SkScalarDiv(-bounds.width(), fixed);
+            stretchX = -bounds.width() / fixed;
     }
 
     if (numYStretch > 0) {
@@ -173,7 +173,7 @@ void SkNinePatch::DrawMesh(SkCanvas* canvas, const SkRect& bounds,
         if (bounds.height() >= fixed)
             stretchY = (bounds.height() - fixed) / stretchSize;
         else // reuse stretchX, but keep it negative as a signal
-            stretchY = SkScalarDiv(-bounds.height(), fixed);
+            stretchY = -bounds.height() / fixed;
     }
 
 #if 0