pathops work in progress

src/pathops/SkPathOpsTypes.cpp

Index: src/pathops/SkPathOpsTypes.cpp
diff --git a/src/pathops/SkPathOpsTypes.cpp b/src/pathops/SkPathOpsTypes.cpp
index df73d11ce44e0122abf84f86318ef8011444f0b3..dbed086fbd94d868d224eb97943f063599e0f562 100644
--- a/src/pathops/SkPathOpsTypes.cpp
+++ b/src/pathops/SkPathOpsTypes.cpp
@@ -8,17 +8,17 @@
 #include "SkPathOpsTypes.h"
 
 static bool arguments_denormalized(float a, float b, int epsilon) {
-    float denomalizedCheck = FLT_EPSILON * epsilon / 2;
-    return fabsf(a) <= denomalizedCheck && fabsf(b) <= denomalizedCheck;
+    float denormalizedCheck = FLT_EPSILON * epsilon / 2;
+    return fabsf(a) <= denormalizedCheck && fabsf(b) <= denormalizedCheck;
 }
 
 // from http://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/
 // FIXME: move to SkFloatBits.h
-static bool equal_ulps(float a, float b, int epsilon) {
+static bool equal_ulps(float a, float b, int epsilon, int depsilon) {
     if (!SkScalarIsFinite(a) || !SkScalarIsFinite(b)) {
         return false;
     }
-    if (arguments_denormalized(a, b, epsilon)) {
+    if (arguments_denormalized(a, b, depsilon)) {
         return true;
     }
     int aBits = SkFloatAs2sCompliment(a);
@@ -89,7 +89,12 @@ static bool less_or_equal_ulps(float a, float b, int epsilon) {
 // equality using the same error term as between
 bool AlmostBequalUlps(float a, float b) {
     const int UlpsEpsilon = 2;
-    return equal_ulps(a, b, UlpsEpsilon);
+    return equal_ulps(a, b, UlpsEpsilon, UlpsEpsilon);
+}
+
+bool AlmostPequalUlps(float a, float b) {
+    const int UlpsEpsilon = 8;
+    return equal_ulps(a, b, UlpsEpsilon, UlpsEpsilon);
 }
 
 bool AlmostDequalUlps(float a, float b) {
@@ -99,7 +104,7 @@ bool AlmostDequalUlps(float a, float b) {
 
 bool AlmostEqualUlps(float a, float b) {
     const int UlpsEpsilon = 16;
-    return equal_ulps(a, b, UlpsEpsilon);
+    return equal_ulps(a, b, UlpsEpsilon, UlpsEpsilon);
 }
 
 bool NotAlmostEqualUlps(float a, float b) {
@@ -114,7 +119,8 @@ bool NotAlmostDequalUlps(float a, float b) {
 
 bool RoughlyEqualUlps(float a, float b) {
     const int UlpsEpsilon = 256;
-    return equal_ulps(a, b, UlpsEpsilon);
+    const int DUlpsEpsilon = 1024;
+    return equal_ulps(a, b, UlpsEpsilon, DUlpsEpsilon);
 }
 
 bool AlmostBetweenUlps(float a, float b, float c) {