diff --git a/simgear/math/simd.hxx b/simgear/math/simd.hxx
index 64cf59bc..cbbc9306 100644
--- a/simgear/math/simd.hxx
+++ b/simgear/math/simd.hxx
@@ -42,6 +42,14 @@ public:
         vec[3] = v[3];
     }
 
+    float (&ptr(void))[4] {
+        return vec;
+    }
+
+    inline const float (&ptr(void) const)[4] {
+        return vec;
+    }
+
     inline simd4_t& operator=(float f)
     {
         vec[0] = vec[1] = vec[2] = vec[3] = f;
@@ -57,6 +65,15 @@ public:
         return *this;
     }
 
+    inline simd4_t& operator=(const simd4_t& v)
+    {
+        vec[0] = v[0];
+        vec[1] = v[1];
+        vec[2] = v[2];
+        vec[3] = v[3];
+        return *this;
+    }
+
     inline simd4_t operator-()
     {
         simd4_t r(0.0f);
@@ -222,6 +239,14 @@ public:
         vec[3] = v[3];
     }
 
+    inline double (&ptr(void))[4] {
+        return vec;
+    }
+
+    inline const double (&ptr(void) const)[4] {
+        return vec;
+    }
+
     inline simd4_t& operator=(double f)
     {
         vec[0] = vec[1] = vec[2] = vec[3] = f;
@@ -237,6 +262,16 @@ public:
         return *this;
     }
 
+    inline simd4_t& operator=(const simd4_t& v)
+    {
+        simd4_t(r);
+        vec[0] = v[0];
+        vec[1] = v[1];
+        vec[2] = v[2];
+        vec[3] = v[3];
+        return *this;
+    }
+
     inline simd4_t operator-()
     {
         simd4_t r(0.0f);