more work towards cpu pipeline, sharing OpenCL kernel code

src/Bullet3Common/shared/b3Float4.h

@@ -10,6 +10,13 @@
 	#define b3Dot3F4 b3Dot
 	#define b3Cross3 b3Cross
 	#define	b3MakeFloat4  b3MakeVector3
+
+	inline b3Float4 b3FastNormalized3(b3Float4ConstArg v)
+	{
+		return v.normalized();
+	}
+
+
 #else
 	typedef float4	b3Float4;
 	#define b3Float4ConstArg const b3Float4
@@ -28,4 +35,15 @@
 	}
 #endif 
 
+
+		
+inline bool b3IsAlmostZero(b3Float4ConstArg v)
+{
+	if(b3Fabs(v.x)>1e-6 || b3Fabs(v.y)>1e-6 || b3Fabs(v.z)>1e-6)	
+		return false;
+	return true;
+}
+
+
+
 #endif //B3_FLOAT4_H