X-Git-Url: https://mograsim.net/gitweb/?a=blobdiff_plain;f=era.mi%2Fsrc%2Fera%2Fmi%2Flogic%2FUtil.java;h=4a03410e25531721a41de50fa9b95af2d10da525;hb=74aebd92f41d03f4a44c9a455ef8c05465136412;hp=6f1b93ff92fb4087bb16c8692eeb7e8052bf714f;hpb=a4c5cfb856026771dfcf31eb22434b8b6ff20ad4;p=Mograsim.git

diff --git a/era.mi/src/era/mi/logic/Util.java b/era.mi/src/era/mi/logic/Util.java
index 6f1b93ff..4a03410e 100644
--- a/era.mi/src/era/mi/logic/Util.java
+++ b/era.mi/src/era/mi/logic/Util.java
@@ -2,27 +2,24 @@ package era.mi.logic;
 
 import java.util.Arrays;
 
-public final class Util
-{
-	
+public final class Util {
+
 	@SuppressWarnings("unchecked")
-	public static <T> T[] concat(T[]... arrays)
-	{
-		if(arrays.length == 0)
+	public static <T> T[] concat(T[]... arrays) {
+		if (arrays.length == 0)
 			throw new IllegalArgumentException("Cannot concatenate 0 arrays.");
-		
+
 		int length = 0;
-		for(T[] array : arrays)
+		for (T[] array : arrays)
 			length += array.length;
-		
+
 		T[] newArray = Arrays.copyOf(arrays[0], length);
 		int appendIndex = arrays[0].length;
-		for(int i = 1; i < arrays.length; i++)
-		{
+		for (int i = 1; i < arrays.length; i++) {
 			System.arraycopy(arrays[i], 0, newArray, appendIndex, arrays[i].length);
 			appendIndex += arrays[i].length;
 		}
-		
+
 		return newArray;
 	}
 
@@ -47,46 +44,52 @@ public final class Util
 //		
 //		return (T[][]) newArray;
 //	}
-	
-	public static Bit[] and(Bit[] a, Bit[] b)
-	{
+
+	public static Bit[] and(Bit[] a, Bit[] b) {
 		return binBitOp(a, b, (bA, bB) -> Bit.and(bA, bB));
 	}
-	
-	public static Bit[] or(Bit[] a, Bit[] b)
-	{
+
+	public static Bit[] or(Bit[] a, Bit[] b) {
 		return binBitOp(a, b, (bA, bB) -> Bit.or(bA, bB));
 	}
-	
-	public static Bit[] xor(Bit[] a, Bit[] b)
-	{
+
+	public static Bit[] xor(Bit[] a, Bit[] b) {
 		return binBitOp(a, b, (bA, bB) -> Bit.xor(bA, bB));
 	}
-	
-	private static Bit[] binBitOp(Bit[] a, Bit[] b, BitOp op)
-	{
-		if(a.length != b.length)
+
+	private static Bit[] binBitOp(Bit[] a, Bit[] b, BitOp op) {
+		if (a.length != b.length)
 			throw new IllegalArgumentException("Bit Arrays were not of equal length.");
 		Bit[] out = new Bit[a.length];
-		for(int i = 0; i < a.length; i++)
-		{
+		for (int i = 0; i < a.length; i++) {
 			out[i] = op.execute(a[i], b[i]);
 		}
 		return out;
 	}
-	
-	public static Bit[] not(Bit[] a)
-	{
+
+	public static Bit[] not(Bit[] a) {
 		Bit[] out = new Bit[a.length];
-		for(int i = 0; i < a.length; i++)
-		{
+		for (int i = 0; i < a.length; i++) {
 			out[i] = a[i].not();
 		}
 		return out;
 	}
-	
-	interface BitOp
-	{
+
+	/**
+	 * uses the {@link Bit#combineWith(Bit)} method, does not create a new array, the result is stored in the first array.
+	 * 
+	 * @author Christian Femers
+	 */
+	public static Bit[] combineInto(Bit[] dest, Bit[] addition) {
+		if (dest.length != addition.length)
+			throw new IllegalArgumentException("Bit Arrays were not of equal length.");
+		for (int i = 0; i < addition.length; i++) {
+			dest[i] = dest[i].combineWith(addition[i]);
+		}
+		return dest;
+	}
+
+	interface BitOp {
 		Bit execute(Bit a, Bit b);
 	}
 }