ISSUE:

[controller.git] / opendaylight / sal / api / src / main / java / org / opendaylight / controller / sal / utils / NetUtils.java

diff --git a/opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/utils/NetUtils.java b/opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/utils/NetUtils.java
index 703d49a9c330ca7f6167c80d23182c9cfeb1d33c..8628bd4813c77cb1f35f4eb2f50d6bc4def95da6 100644 (file)
--- a/opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/utils/NetUtils.java
+++ b/opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/utils/NetUtils.java
@@ -338,4 +338,29 @@ public abstract class NetUtils {
         }
         return true;
     }
+    
+    /*
+     * Following utilities are useful when you need to 
+     * compare or bit shift java primitive type variable
+     * which are inerently signed
+     */
+    /**
+     * Returns the unsigned value of the passed byte variable
+     * 
+     * @param b        the byte value
+     * @return the int variable containing the unsigned byte value
+     */
+    public static int getUnsignedByte(byte b) {
+               return (b > 0)? (int)b : ((int)b & 0x7F | 0x80);
+       }
+       
+    /**
+     * Return the unsigned value of the passed short variable
+     * 
+     * @param s the short value
+     * @return the int variable containing the unsigned short value
+     */
+       public static int getUnsignedShort(short s) {
+               return (s > 0)? (int)s : ((int)s & 0x7FFF | 0x8000);
+       }
 }