diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/core/SkFloat.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/core/SkFloat.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,107 @@
+
+/*
+ * 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.
+ */
+
+
+#ifndef SkFloat_DEFINED
+#define SkFloat_DEFINED
+
+#include "SkFixed.h"
+
+class SkFloat {
+public:
+    SkFloat() {}
+
+    void    setZero() { fPacked = 0; }
+//  void    setShift(int value, int shift) { fPacked = SetShift(value, shift); }
+    void    setInt(int value) { fPacked = SetShift(value, 0); }
+    void    setFixed(SkFixed value) { fPacked = SetShift(value, -16); }
+
+//  int     getShift(int shift) const { return GetShift(fPacked, shift); }
+    int     getInt() const { return GetShift(fPacked, 0); }
+    SkFixed getFixed() const { return GetShift(fPacked, -16); }
+
+    void    abs() { fPacked = Abs(fPacked); }
+    void    negate() { fPacked = Neg(fPacked); }
+
+    void    shiftLeft(int bits) { fPacked = Shift(fPacked, bits); }
+    void    setShiftLeft(const SkFloat& a, int bits) { fPacked = Shift(a.fPacked, bits); }
+
+    void    shiftRight(int bits) { fPacked = Shift(fPacked, -bits); }
+    void    setShiftRight(const SkFloat& a, int bits) { fPacked = Shift(a.fPacked, -bits); }
+
+    void    add(const SkFloat& a) { fPacked = Add(fPacked, a.fPacked); }
+    void    setAdd(const SkFloat& a, const SkFloat& b) { fPacked = Add(a.fPacked, b.fPacked); }
+
+    void    sub(const SkFloat& a) { fPacked = Add(fPacked, Neg(a.fPacked)); }
+    void    setSub(const SkFloat& a, const SkFloat& b) { fPacked = Add(a.fPacked, Neg(b.fPacked)); }
+
+    void    mul(const SkFloat& a) { fPacked = Mul(fPacked, a.fPacked); }
+    void    setMul(const SkFloat& a, const SkFloat& b) { fPacked = Mul(a.fPacked, b.fPacked); }
+
+    void    div(const SkFloat& a) { fPacked = Div(fPacked, a.fPacked); }
+    void    setDiv(const SkFloat& a, const SkFloat& b) { fPacked = Div(a.fPacked, b.fPacked); }
+
+    void    sqrt() { fPacked = Sqrt(fPacked); }
+    void    setSqrt(const SkFloat& a) { fPacked = Sqrt(a.fPacked); }
+    void    cubeRoot() { fPacked = CubeRoot(fPacked); }
+    void    setCubeRoot(const SkFloat& a) { fPacked = CubeRoot(a.fPacked); }
+
+    friend bool operator==(const SkFloat& a, const SkFloat& b) { return a.fPacked == b.fPacked; }
+    friend bool operator!=(const SkFloat& a, const SkFloat& b) { return a.fPacked != b.fPacked; }
+    friend bool operator<(const SkFloat& a, const SkFloat& b) { return Cmp(a.fPacked, b.fPacked) < 0; }
+    friend bool operator<=(const SkFloat& a, const SkFloat& b) { return Cmp(a.fPacked, b.fPacked) <= 0; }
+    friend bool operator>(const SkFloat& a, const SkFloat& b) { return Cmp(a.fPacked, b.fPacked) > 0; }
+    friend bool operator>=(const SkFloat& a, const SkFloat& b) { return Cmp(a.fPacked, b.fPacked) >= 0; }
+
+#ifdef SK_DEBUG
+    static void UnitTest();
+
+    void assertEquals(float f, int tolerance = 0)
+    {
+        union {
+            float   fFloat;
+            int32_t fPacked;
+        } tmp;
+
+        tmp.fFloat = f;
+        int d = tmp.fPacked - fPacked;
+        SkASSERT(SkAbs32(d) <= tolerance);
+    }
+    float getFloat() const
+    {
+        union {
+            float   fFloat;
+            int32_t fPacked;
+        } tmp;
+
+        tmp.fPacked = fPacked;
+        return tmp.fFloat;
+    }
+#endif
+
+private:
+    int32_t fPacked;
+
+public:
+    static int GetShift(int32_t packed, int shift);
+    static int32_t SetShift(int value, int shift);
+    static int32_t Neg(int32_t);
+    static int32_t Abs(int32_t packed) { return (uint32_t)(packed << 1) >> 1; }
+    static int32_t Shift(int32_t, int bits);
+    static int32_t Add(int32_t, int32_t);
+    static int32_t Mul(int32_t, int32_t);
+    static int32_t MulInt(int32_t, int);
+    static int32_t Div(int32_t, int32_t);
+    static int32_t DivInt(int32_t, int);
+    static int32_t Invert(int32_t);
+    static int32_t Sqrt(int32_t);
+    static int32_t CubeRoot(int32_t);
+    static int Cmp(int32_t, int32_t);
+};
+
+#endif