diff --git a/02-SplineInterpolator/SplineInterpolator/hdl/interpolatorCalculatePolynom_studentVersion.vhd b/02-SplineInterpolator/SplineInterpolator/hdl/interpolatorCalculatePolynom_studentVersion.vhd
index 8c86122..7015431 100644
--- a/02-SplineInterpolator/SplineInterpolator/hdl/interpolatorCalculatePolynom_studentVersion.vhd
+++ b/02-SplineInterpolator/SplineInterpolator/hdl/interpolatorCalculatePolynom_studentVersion.vhd
@@ -5,7 +5,6 @@ signal x: st;
 signal u: st;
 signal v: st;
 signal w: st;
-signal y: st;
 
 BEGIN
 
@@ -15,28 +14,25 @@ BEGIN
       u <= (others => '0');
       v <= (others => '0');
       w <= (others => '0');
-      y <= (others => '0');
     elsif rising_edge(clock) then
 
       if restartPolynom = '1' then
 
-        x <= resize(d, st'high+1) sll (oversamplingBitNb * 3 + 1);
-        u <= resize(a, st'high+1) + (resize(b, st'high+1) sll oversamplingBitNb) + (resize(c, st'high+1) sll (oversamplingBitNb*2));
-        v <= resize(6*a, v'length) + (resize(b, st'high+1) sll (oversamplingBitNb + 1));
+        x <= resize(d, st'high+1) sla (oversamplingBitNb * 3 + 1);
+        u <= resize(a, st'high+1) + (resize(b, st'high+1) sla oversamplingBitNb) + (resize(c, st'high+1) sla (oversamplingBitNb*2));
+        v <= resize(6*a, v'length) + (resize(b, st'high+1) sla (oversamplingBitNb + 1));
         w <= resize(6*a, w'length);
-        y <= resize(d, st'high+1);
         
       else
 
         x <= x + u;
         u <= u + v;
         v <= v + w;
-        y <= x srl (oversamplingBitNb * 3 + 1);
 
       end if;
 
     end if;
   end process;
 
-  sampleOut <= resize(y,signalBitNb);
+  sampleOut <= resize(x sra (oversamplingBitNb * 3 + 1),signalBitNb);
 END ARCHITECTURE studentVersion;
diff --git a/02-SplineInterpolator/SplineInterpolator/hdl/offsetToUnsigned_studentVersion.vhd b/02-SplineInterpolator/SplineInterpolator/hdl/offsetToUnsigned_studentVersion.vhd
index 360c161..fb29ec9 100644
--- a/02-SplineInterpolator/SplineInterpolator/hdl/offsetToUnsigned_studentVersion.vhd
+++ b/02-SplineInterpolator/SplineInterpolator/hdl/offsetToUnsigned_studentVersion.vhd
@@ -1,4 +1,17 @@
 ARCHITECTURE studentVersion OF offsetToUnsigned IS
+
+  signal mySignal : unsigned(BitNb-1 downto 0);
+  signal const : unsigned(BitNb-1 downto 0) := (others => '1');
+
 BEGIN
-  unsignedOut <= (others => '0');
+  process(signedIn) begin
+    if signedIn(signedIn'high) then
+      mySignal <= unsigned(signedIn) - (const srl 1);
+    else
+    mySignal <= unsigned(signedIn) + (const srl 1);
+    end if;
+  end process;
+
+  unsignedOut <= mySignal;
+
 END ARCHITECTURE studentVersion;