added class PrimitiveMath, that focus on performing Addition Operatio…

guava/src/com/google/common/math/PrimitiveMath.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2011 The Guava Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.google.common.math;
+import com.google.common.annotations.GwtCompatible;
+/**
+ * A class that focus on performing Addition operation using bitwise operators and checking whether the number is even or odd is
+ * not covered in {@link java.lang.Math} and {@Link com.google.common.math}
+ * @author Harish Babu
+ * @since 11.0
+ */
+@GwtCompatible(emulated = true)
+@ElementTypesAreNonnullByDefault
+public final class PrimitiveMath{
+    /*
+     * This method returns an integer value by performing addition operations using bitwise XOR and bitwise AND
+     * It performs faster than + operator.
+     * The input takes 2 integer values.
+     */
+    public static int add(int value1,int value2){
+        return (value1^value2)+2*(value1&value2);
+    }
+
+    /*
+     * This method returns a short value by performing addition operations using bitwise XOR and bitwise AND
+     * It performs faster than + operator.
+     * The input takes 2 short values.
+     */
+    public static short add(short value1,short value2){
+        return (value1^value2)+2*(value1&value2);
+    }
+
+    /*
+     * This method returns a long value by performing addition operations using bitwise XOR and bitwise AND
+     * It performs faster than + operator.
+     * The input takes 2 long values.
+     */
+    public static long add(long value1,long value2){
+        return (value1^value2)+2*(value1&value2);
+    }
+
+    /*
+     * This method returns a boolean value by checking whether number is even or odd using bitwise AND operator
+     * The input required is a single integer value
+     */
+    public boolean isEven(int value){
+        return value&1;
+    }
+
+    /*
+     * This method returns a boolean value by checking whether number is even or odd using bitwise AND operator
+     * The input required is a single short value
+     */
+    public boolean isEven(short value){
+        return value&1;
+    }
+    /*
+     * This method returns a boolean value by checking whether number is even or odd using bitwise AND operator
+     * The input required is a long integer value
+     */
+    public boolean isEven(long value){
+        return value&1;
+    }
+}