add SkScalarIsInt()

git-svn-id: http://skia.googlecode.com/svn/trunk@1262 2bbb7eff-a529-9590-31e7-b0007b416f81

diff --git a/include/core/SkScalar.h b/include/core/SkScalar.h
index 4fca656..e568d7e 100644 (file)
--- a/include/core/SkScalar.h
+++ b/include/core/SkScalar.h
@@ -173,6 +173,9 @@
     inline SkScalar SkMaxScalar(SkScalar a, SkScalar b) { return a > b ? a : b; }
     inline SkScalar SkMinScalar(SkScalar a, SkScalar b) { return a < b ? a : b; }
 
+    static inline bool SkScalarIsInt(SkScalar x) {
+        return x == (float)(int)x;
+    }
 #else
     typedef SkFixed SkScalar;
 
@@ -237,6 +240,10 @@
 
     #define SkMaxScalar(a, b)       SkMax32(a, b)
     #define SkMinScalar(a, b)       SkMin32(a, b)
+
+    static inline bool SkScalarIsInt(SkFixed x) {
+        return 0 == (x & 0xffff);
+    }
 #endif
 
 #define SK_ScalarNearlyZero         (SK_Scalar1 / (1 << 12))