diff --git a/de4dot.blocks/cflow/InstructionEmulator.cs b/de4dot.blocks/cflow/InstructionEmulator.cs
index 1e768c1f..447812b5 100644
--- a/de4dot.blocks/cflow/InstructionEmulator.cs
+++ b/de4dot.blocks/cflow/InstructionEmulator.cs
@@ -433,9 +433,9 @@ namespace de4dot.blocks.cflow {
 
 			case Code.Unbox:
 
-			case Code.Conv_R_Un:
-			case Code.Conv_R4:
-			case Code.Conv_R8:
+			case Code.Conv_R_Un:Emulate_Conv_R_Un(instr); break;
+			case Code.Conv_R4:	Emulate_Conv_R4(instr); break;
+			case Code.Conv_R8:	Emulate_Conv_R8(instr); break;
 
 			case Code.Arglist:
 			case Code.Beq:
@@ -786,6 +786,36 @@ namespace de4dot.blocks.cflow {
 			}
 		}
 
+		void Emulate_Conv_R_Un(Instruction instr) {
+			var val1 = valueStack.Pop();
+			switch (val1.valueType) {
+			case ValueType.Int32:	valueStack.Push(Int32Value.Conv_R_Un((Int32Value)val1)); break;
+			case ValueType.Int64:	valueStack.Push(Int64Value.Conv_R_Un((Int64Value)val1)); break;
+			case ValueType.Real8:	valueStack.Push(Real8Value.Conv_R_Un((Real8Value)val1)); break;
+			default:				valueStack.Push(Real8Value.CreateUnknown()); break;
+			}
+		}
+
+		void Emulate_Conv_R4(Instruction instr) {
+			var val1 = valueStack.Pop();
+			switch (val1.valueType) {
+			case ValueType.Int32:	valueStack.Push(Int32Value.Conv_R4((Int32Value)val1)); break;
+			case ValueType.Int64:	valueStack.Push(Int64Value.Conv_R4((Int64Value)val1)); break;
+			case ValueType.Real8:	valueStack.Push(Real8Value.Conv_R4((Real8Value)val1)); break;
+			default:				valueStack.Push(Real8Value.CreateUnknown()); break;
+			}
+		}
+
+		void Emulate_Conv_R8(Instruction instr) {
+			var val1 = valueStack.Pop();
+			switch (val1.valueType) {
+			case ValueType.Int32:	valueStack.Push(Int32Value.Conv_R8((Int32Value)val1)); break;
+			case ValueType.Int64:	valueStack.Push(Int64Value.Conv_R8((Int64Value)val1)); break;
+			case ValueType.Real8:	valueStack.Push(Real8Value.Conv_R8((Real8Value)val1)); break;
+			default:				valueStack.Push(Real8Value.CreateUnknown()); break;
+			}
+		}
+
 		void Emulate_Add(Instruction instr) {
 			var val2 = valueStack.Pop();
 			var val1 = valueStack.Pop();
diff --git a/de4dot.blocks/cflow/Int32Value.cs b/de4dot.blocks/cflow/Int32Value.cs
index 2574a36c..bdb60482 100644
--- a/de4dot.blocks/cflow/Int32Value.cs
+++ b/de4dot.blocks/cflow/Int32Value.cs
@@ -331,6 +331,24 @@ namespace de4dot.blocks.cflow {
 			return new Int64Value((long)(uint)a.Value, a.ValidMask | (Int64Value.NO_UNKNOWN_BITS << 32));
 		}
 
+		public static Real8Value Conv_R_Un(Int32Value a) {
+			if (a.AllBitsValid())
+				return new Real8Value((float)(uint)a.Value);
+			return Real8Value.CreateUnknown();
+		}
+
+		public static Real8Value Conv_R4(Int32Value a) {
+			if (a.AllBitsValid())
+				return new Real8Value((float)(int)a.Value);
+			return Real8Value.CreateUnknown();
+		}
+
+		public static Real8Value Conv_R8(Int32Value a) {
+			if (a.AllBitsValid())
+				return new Real8Value((double)(int)a.Value);
+			return Real8Value.CreateUnknown();
+		}
+
 		public static Int32Value Add(Int32Value a, Int32Value b) {
 			if (a.AllBitsValid() && b.AllBitsValid())
 				return new Int32Value(a.Value + b.Value);
diff --git a/de4dot.blocks/cflow/Int64Value.cs b/de4dot.blocks/cflow/Int64Value.cs
index cef25e09..20303704 100644
--- a/de4dot.blocks/cflow/Int64Value.cs
+++ b/de4dot.blocks/cflow/Int64Value.cs
@@ -224,6 +224,24 @@ namespace de4dot.blocks.cflow {
 			return a;
 		}
 
+		public static Real8Value Conv_R_Un(Int64Value a) {
+			if (a.AllBitsValid())
+				return new Real8Value((float)(ulong)a.Value);
+			return Real8Value.CreateUnknown();
+		}
+
+		public static Real8Value Conv_R4(Int64Value a) {
+			if (a.AllBitsValid())
+				return new Real8Value((float)(long)a.Value);
+			return Real8Value.CreateUnknown();
+		}
+
+		public static Real8Value Conv_R8(Int64Value a) {
+			if (a.AllBitsValid())
+				return new Real8Value((double)(long)a.Value);
+			return Real8Value.CreateUnknown();
+		}
+
 		public static Int64Value Add(Int64Value a, Int64Value b) {
 			if (a.AllBitsValid() && b.AllBitsValid())
 				return new Int64Value(a.Value + b.Value);
diff --git a/de4dot.blocks/cflow/Real8Value.cs b/de4dot.blocks/cflow/Real8Value.cs
index 1cce6ea1..f7e17a35 100644
--- a/de4dot.blocks/cflow/Real8Value.cs
+++ b/de4dot.blocks/cflow/Real8Value.cs
@@ -168,6 +168,20 @@ namespace de4dot.blocks.cflow {
 			return Int64Value.CreateUnknown();
 		}
 
+		public static Real8Value Conv_R_Un(Real8Value a) {
+			return CreateUnknown();
+		}
+
+		public static Real8Value Conv_R4(Real8Value a) {
+			if (a.IsValid)
+				return new Real8Value((float)a.Value);
+			return CreateUnknown();
+		}
+
+		public static Real8Value Conv_R8(Real8Value a) {
+			return a;
+		}
+
 		public static Int32Value Ceq(Real8Value a, Real8Value b) {
 			return Int32Value.Create(CompareEq(a, b));
 		}