-#define DotProduct(x,y) (x[0]*y[0]+x[1]*y[1]+x[2]*y[2])
-#define VectorSubtract(a,b,c) {c[0]=a[0]-b[0];c[1]=a[1]-b[1];c[2]=a[2]-b[2];}
-#define VectorAdd(a,b,c) {c[0]=a[0]+b[0];c[1]=a[1]+b[1];c[2]=a[2]+b[2];}
-#define VectorCopy(a,b) {b[0]=a[0];b[1]=a[1];b[2]=a[2];}
-#define VectorScale(a,b,c) {c[0]=b*a[0];c[1]=b*a[1];c[2]=b*a[2];}
-#define VectorClear(x) {x[0] = x[1] = x[2] = 0;}
-#define VectorNegate(x) {x[0]=-x[0];x[1]=-x[1];x[2]=-x[2];}
+#define DotProduct( x,y ) ( x[0] * y[0] + x[1] * y[1] + x[2] * y[2] )
+#define VectorSubtract( a,b,c ) {c[0] = a[0] - b[0]; c[1] = a[1] - b[1]; c[2] = a[2] - b[2]; }
+#define VectorAdd( a,b,c ) {c[0] = a[0] + b[0]; c[1] = a[1] + b[1]; c[2] = a[2] + b[2]; }
+#define VectorCopy( a,b ) {b[0] = a[0]; b[1] = a[1]; b[2] = a[2]; }
+#define VectorScale( a,b,c ) {c[0] = b * a[0]; c[1] = b * a[1]; c[2] = b * a[2]; }
+#define VectorClear( x ) {x[0] = x[1] = x[2] = 0; }
+#define VectorNegate( x ) {x[0] = -x[0]; x[1] = -x[1]; x[2] = -x[2]; }