// **********************************************************************
// BitAdder.h
//
// Implementation of a one bit adder.  The adder supports both a half 
// adder and a full adder.
//
// **********************************************************************
// CS251 -	Computer Organization
//			Spring 1997
//			Dickinson College
//			Grant Braught
//
// **********************************************************************

#ifndef BITADDER

#define BITADDER

#include "Logic.h"

// *********************
// AddResult structure
// *********************
//
// This structure is used to hold and return the results of addition
// operations.

struct AddResult
{
	Bool	Sum;				// Result of the addition.
	Bool	Carry;				// Value of the carry out from the addition.
};


// *********************
// Adder Functions
// *********************
//
// These are the functions that perform the full and half addition.

void	BitAdder(Bool X, Bool Y, AddResult& Result);
		// Half Adder - Performs 1 bit addition on X & Y and puts
		// the result into the Result parameter.

void	BitAdder(Bool X, Bool Y, Bool CarryIn, AddResult& Result);
		// Full Adder - Performs 1 bit addition on X, Y & CarryIn and
		// puts the result into the Result parameter.

#endif