path ops work in progress

src/pathops/SkDQuadImplicit.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkDQuadImplicit.h"
 
 /* from http://tom.cs.byu.edu/~tom/papers/cvgip84.pdf 4.1
  *
@@ skipping 85 matching lines @@
 bool SkDQuadImplicit::match(const SkDQuadImplicit& p2) const {
     int first = 0;
     for (int index = 0; index <= kC_Coeff; ++index) {
         if (approximately_zero(fP[index]) && approximately_zero(p2.fP[index])) {
             first += first == index;
             continue;
         }
         if (first == index) {
             continue;
         }
-        if (!AlmostEqualUlps(fP[index] * p2.fP[first], fP[first] * p2.fP[index])) {
+        if (!AlmostDequalUlps(fP[index] * p2.fP[first], fP[first] * p2.fP[index])) {
             return false;
         }
     }
     return true;
 }
 
 bool SkDQuadImplicit::Match(const SkDQuad& quad1, const SkDQuad& quad2) {
     SkDQuadImplicit i1(quad1);  // a'xx , b'xy , c'yy , d'x , e'y , f
     SkDQuadImplicit i2(quad2);
     return i1.match(i2);
 }