diff -r 4c8abb8977dc -r ca7d4c665531 include/vector.h
--- a/include/vector.h	Thu May 08 09:21:25 2008 +0200
+++ b/include/vector.h	Sat May 10 14:29:37 2008 +0200
@@ -36,8 +36,10 @@
 
 using namespace std;
 
+#define NO_SIMD_VECTOR
+
 /**
- * three cell vector
+ * three (four) cell vector
  */
 class Vector
 {
@@ -92,7 +94,7 @@
 	/** Accumulate. Useful for colors. */
 	Vector operator+=(const Vector &v)
 	{
-#ifdef NO_SIMD
+#ifdef NO_SIMD_VECTOR
 		x += v.x;
 		y += v.y;
 		z += v.z;
@@ -124,7 +126,7 @@
 	/** Sum of two vectors */
 	friend Vector operator+(const Vector &a, const Vector &b)
 	{
-#ifdef NO_SIMD
+#ifdef NO_SIMD_VECTOR
 		return Vector(a.x + b.x, a.y + b.y, a.z + b.z);
 #else
 		return Vector(madd(a.mf4, b.mf4));
@@ -134,10 +136,9 @@
 	/** Difference of two vectors */
 	friend Vector operator-(const Vector &a, const Vector &b)
 	{
-#if defined(NO_SIMD) || defined(MSVC)
+#ifdef NO_SIMD_VECTOR
 		return Vector(a.x - b.x, a.y - b.y, a.z - b.z);
 #else
-		// this faults in MSVC, for unknown reason
 		return Vector(msub(a.mf4, b.mf4));
 #endif
 	};
@@ -178,7 +179,7 @@
 	/** Get f/v, i.e. inverted vector multiplied by scalar */
 	friend Vector operator/(const Float &f, const Vector &v)
 	{
-#ifdef NO_SIMD
+#ifdef NO_SIMD_VECTOR
 		return Vector(f / v.x, f / v.y, f / v.z);
 #else
 		return Vector(mdiv(mset1(f), v.mf4));
@@ -200,7 +201,7 @@
 	/** Cell by cell product (only useful for colors) */
 	friend Vector operator*(const Vector &a, const Vector &b)
 	{
-#ifdef NO_SIMD
+#ifdef NO_SIMD_VECTOR
 		return Vector(a.x * b.x, a.y * b.y, a.z * b.z);
 #else
 		return Vector(mmul(a.mf4, b.mf4));