Fix to check for inf when generating quadratic points

src/core/SkPoint.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 "SkMathPriv.h"
@@ skipping 205 matching lines @@
     SkVector v = *this - a;
 
     SkScalar uLengthSqd = u.lengthSqd();
     SkScalar det = u.cross(v);
     if (side) {
         SkASSERT(-1 == SkPoint::kLeft_Side &&
                   0 == SkPoint::kOn_Side &&
                   1 == kRight_Side);
         *side = (Side) SkScalarSignAsInt(det);
     }
-    return SkScalarMulDiv(det, det, uLengthSqd);
+    SkScalar temp = det / uLengthSqd;
+    temp *= det;
+    return temp;
 }
 
 SkScalar SkPoint::distanceToLineSegmentBetweenSqd(const SkPoint& a,
                                                   const SkPoint& b) const {
     // See comments to distanceToLineBetweenSqd. If the projection of c onto
     // u is between a and b then this returns the same result as that
     // function. Otherwise, it returns the distance to the closer of a and
     // b. Let the projection of v onto u be v'.  There are three cases:
     //    1. v' points opposite to u. c is not between a and b and is closer
     //       to a than b.
@@ skipping 12 matching lines @@
 
     SkScalar uLengthSqd = u.lengthSqd();
     SkScalar uDotV = SkPoint::DotProduct(u, v);
 
     if (uDotV <= 0) {
         return v.lengthSqd();
     } else if (uDotV > uLengthSqd) {
         return b.distanceToSqd(*this);
     } else {
         SkScalar det = u.cross(v);
-        return SkScalarMulDiv(det, det, uLengthSqd);
+        SkScalar temp = det / uLengthSqd;
+        temp *= det;
+        return temp;
     }
 }