More stuff to avoid compiler errors in clang

dlib/simd/simd4f.h

@@ -99,6 +99,16 @@ namespace dlib
             return temp;
         }
 
+        inline simd4f& operator=(const simd4i& val)
+        {
+            x[0] = val[0];
+            x[1] = val[1];
+            x[2] = val[2];
+            x[3] = val[3];
+            return *this;
+        }
+
+
         void load_aligned(const type* ptr)
         {
             x[0] = ptr[0];

dlib/simd/simd8f.h

@@ -100,8 +100,8 @@ namespace dlib
         operator simd8i::rawarray() const 
         { 
             simd8i::rawarray temp;
-            temp.low = _low;
-            temp.high = _high;
+            temp.low = simd4i(_low);
+            temp.high = simd4i(_high);
             return temp;
         }