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Java/Bitboard.java

@@ -0,0 +1,74 @@
+import java.math.BigInteger;
+
+public class Bitboard 
+{
+
+    public static BigInteger addBit(BigInteger bitboard, int square) 
+    {
+        return bitboard.setBit(square);
+    }
+
+    public static void printBigInteger(BigInteger bitboard) 
+    {
+        for (int rank = 0; rank < 8; rank++) 
+        {
+            for (int file = 0; file < 8; file++) 
+            {
+                int square = rank * 8 + file;
+                processSquare(bitboard, square);
+            }
+            System.out.println();
+        }
+        System.out.println("BigInteger: " + bitboard);
+    }
+
+    static void processSquare(BigInteger bitboard, int square) 
+    {
+        if (bitboard.testBit(square)) 
+        {
+            System.out.print("X ");
+        } 
+        else 
+        {
+            System.out.print("_ ");
+        }
+    }
+
+    static int bitScanForwardSlow(BigInteger bitboard) 
+    {
+        for (int i = 0; i < 64; i++) 
+        {
+            if (bitboard.testBit(i)) 
+            {
+                return i;
+            }
+        }
+        return -1;
+    }
+
+    static void printLong(long input)
+    {
+        for (int rank = 0; rank < 8; rank++) 
+        {
+            for (int file = 0; file < 8; file++) 
+            {
+                int square = rank * 8 + file;
+                processSquareLong(input, square);
+            }
+            System.out.println();
+        }
+        System.out.println("long: " + input);
+    }
+
+    static void processSquareLong(long bitboard, int square) 
+    {
+        if ((bitboard & MoveConstants.SQUARE_BBS[square]) != 0) 
+        {
+            System.out.print("X ");
+        } 
+        else 
+        {
+            System.out.print("_ ");
+        }
+    }
+}