diff --git a/src/Reactor/Nucleus.cpp b/src/Reactor/Nucleus.cpp
index 66bbe46..3c19e3f 100644
--- a/src/Reactor/Nucleus.cpp
+++ b/src/Reactor/Nucleus.cpp
@@ -933,6 +933,20 @@
 		storeValue(integer);
 	}
 
+	Byte::Byte(RValue<UInt> cast)
+	{
+		Value *integer = Nucleus::createTrunc(cast.value, Byte::getType());
+
+		storeValue(integer);
+	}
+
+	Byte::Byte(RValue<UShort> cast)
+	{
+		Value *integer = Nucleus::createTrunc(cast.value, Byte::getType());
+
+		storeValue(integer);
+	}
+
 	Byte::Byte()
 	{
 	}
@@ -1178,6 +1192,20 @@
 		storeValue(argument);
 	}
 
+	SByte::SByte(RValue<Int> cast)
+	{
+		Value *integer = Nucleus::createTrunc(cast.value, SByte::getType());
+
+		storeValue(integer);
+	}
+
+	SByte::SByte(RValue<Short> cast)
+	{
+		Value *integer = Nucleus::createTrunc(cast.value, SByte::getType());
+
+		storeValue(integer);
+	}
+
 	SByte::SByte()
 	{
 	}
@@ -1665,6 +1693,13 @@
 		storeValue(argument);
 	}
 
+	UShort::UShort(RValue<UInt> cast)
+	{
+		Value *integer = Nucleus::createTrunc(cast.value, UShort::getType());
+
+		storeValue(integer);
+	}
+
 	UShort::UShort()
 	{
 	}
@@ -4205,7 +4240,7 @@
 
 	UInt::UInt(RValue<Float> cast)
 	{
-		Value *integer = Nucleus::createFPToSI(cast.value, UInt::getType());
+		Value *integer = Nucleus::createFPToUI(cast.value, UInt::getType());
 
 		storeValue(integer);
 	}
diff --git a/src/Reactor/Nucleus.hpp b/src/Reactor/Nucleus.hpp
index aef1a24..f63d693 100644
--- a/src/Reactor/Nucleus.hpp
+++ b/src/Reactor/Nucleus.hpp
@@ -401,6 +401,8 @@
 		explicit Byte(llvm::Argument *argument);
 
 		explicit Byte(RValue<Int> cast);
+		explicit Byte(RValue<UInt> cast);
+		explicit Byte(RValue<UShort> cast);
 
 		Byte();
 		Byte(int x);
@@ -456,6 +458,9 @@
 	public:
 		explicit SByte(llvm::Argument *argument);
 
+		explicit SByte(RValue<Int> cast);
+		explicit SByte(RValue<Short> cast);
+
 		SByte();
 		SByte(signed char x);
 		SByte(RValue<SByte> rhs);
@@ -564,6 +569,8 @@
 	public:
 		explicit UShort(llvm::Argument *argument);
 
+		explicit UShort(RValue<UInt> cast);
+
 		UShort();
 		UShort(unsigned short x);
 		UShort(RValue<UShort> rhs);