Revert of stop calling SkScalarDiv

src/utils/SkInterpolator.cpp

 
 /*
  * Copyright 2008 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkInterpolator.h"
@@ skipping 44 matching lines @@
     if (endTime) {
         *endTime = fTimes[fFrameCount - 1].fTime;
     }
     return true;
 }
 
 SkScalar SkInterpolatorBase::ComputeRelativeT(SkMSec time, SkMSec prevTime,
                                   SkMSec nextTime, const SkScalar blend[4]) {
     SkASSERT(time > prevTime && time < nextTime);
 
-    SkScalar t = (SkScalar)(time - prevTime) / (SkScalar)(nextTime - prevTime);
+    SkScalar t = SkScalarDiv((SkScalar)(time - prevTime),
+                             (SkScalar)(nextTime - prevTime));
     return blend ?
             SkUnitCubicInterp(t, blend[0], blend[1], blend[2], blend[3]) : t;
 }
 
 SkInterpolatorBase::Result SkInterpolatorBase::timeToT(SkMSec time, SkScalar* T,
                                         int* indexPtr, SkBool* exactPtr) const {
     SkASSERT(fFrameCount > 0);
     Result  result = kNormal_Result;
     if (fRepeat != SK_Scalar1) {
         SkMSec startTime = 0, endTime = 0;  // initialize to avoid warning
@@ skipping 185 matching lines @@
     }
 
     // Now we have t, so compute the coeff for Y and evaluate
     b = pin_and_convert(by);
     c = pin_and_convert(cy);
     A = 3*b;
     B = 3*(c - 2*b);
     C = 3*(b - c) + Dot14_ONE;
     return SkFixedToScalar(eval_cubic(t, A, B, C) << 2);
 }