--- /dev/null
+package net.mograsim.logic.core.types;
+
+/**
+ * Interface for types that support the basic logic operations
+ *
+ * @author Christian Femers
+ *
+ * @param <T> the logic type itself, to make the operations closed in T
+ * @param <S> the operand type, may be the same as T, see {@link StrictLogicType}
+ */
+public interface LogicType<T extends LogicType<T, S>, S>
+{
+ /**
+ * Determines the result when two signals meet each other directly, also called resolution (IEEE 1164)
+ *
+ * For example:
+ *
+ * <pre>
+ * 0 joined 0 == 0
+ * 1 joined 0 == X
+ * 0 joined 1 == X
+ * 1 joined 1 == 1
+ * </pre>
+ *
+ * @param t the second logic signal
+ * @return the resulting value
+ * @author Christian Femers
+ */
+ T join(S t);
+
+ /**
+ * Classical logic AND
+ *
+ * For example:
+ *
+ * <pre>
+ * 0 AND 0 == 0
+ * 1 AND 0 == 0
+ * 0 AND 1 == 0
+ * 1 AND 1 == 1
+ * </pre>
+ *
+ * @param t the second logic signal
+ * @return the resulting value
+ * @author Christian Femers
+ */
+ T and(S t);
+
+ /**
+ * Classical logic OR
+ *
+ * For example:
+ *
+ * <pre>
+ * 0 OR 0 == 0
+ * 1 OR 0 == 1
+ * 0 OR 1 == 1
+ * 1 OR 1 == 1
+ * </pre>
+ *
+ * @param t the second logic signal
+ * @return the resulting value
+ * @author Christian Femers
+ */
+ T or(S t);
+
+ /**
+ * Classical logic XOR (exclusive OR)
+ *
+ * For example:
+ *
+ * <pre>
+ * 0 XOR 0 == 0
+ * 1 XOR 0 == 1
+ * 0 XOR 1 == 1
+ * 1 XOR 1 == 0
+ * </pre>
+ *
+ * @param t the second logic signal
+ * @return the resulting value
+ * @author Christian Femers
+ */
+ T xor(S t);
+
+ /**
+ * Classical logic NOT (logical negation)
+ *
+ * For example:
+ *
+ * <pre>
+ * NOT 0 == 1
+ * NOT 1 == 0
+ * </pre>
+ *
+ * @return the resulting value
+ * @author Christian Femers
+ */
+ T not();
+
+ /**
+ * {@link #and(Object) AND} and then {@link #not() NOT}
+ *
+ * @author Christian Femers
+ */
+ default T nand(S t)
+ {
+ return and(t).not();
+ }
+
+ /**
+ * {@link #or(Object) OR} and then {@link #not() NOT}
+ *
+ * @author Christian Femers
+ */
+ default T nor(S t)
+ {
+ return or(t).not();
+ }
+
+ /**
+ * {@link #xor(Object) XOR} and then {@link #not() NOT}<br>
+ * Used to determine equality (alias parity, consistency)
+ *
+ * @author Christian Femers
+ */
+ default T xnor(S t)
+ {
+ return xor(t).not();
+ }
+}