// btGeneric6DofConstraint.h
+ void setFrameOffsetAOrigin(const btVector3& v)
+ {
+    m_frameInA.setOrigin(v);
+ }

// bullet/LinearMath/btVector3.h
- #define BT_SHUFFLE(x,y,z,w) ((w)<<6 | (z)<<4 | (y)<<2 | (x))
+ #define BT_SHUFFLE(x, y, z, w) (((w) << 6 | (z) << 4 | (y) << 2 | (x)) & 0xff)