added BitSet::size()

pvDataApp/misc/bitSet.cpp

@@ -191,6 +191,10 @@ namespace epics { namespace pvData {
         return sum;
     }
 
+    uint32 BitSet::size() const {
+        return wordsLength * BITS_PER_WORD;
+    }
+
     BitSet& BitSet::operator&=(const BitSet& set) {
 
         while (wordsInUse > set.wordsInUse)

pvDataApp/misc/bitSet.h

@@ -151,6 +151,15 @@ namespace epics { namespace pvData {
          */
         uint32 cardinality() const;
 
+        /**
+         * Returns the number of bits of space actually in use by this
+         * {@code BitSet} to represent bit values.
+         * The maximum element in the set is the size - 1st element.
+         *
+         * @return the number of bits currently in this bit set
+         */
+        uint32 size() const;
+
         /**
          * Performs a logical <b>AND</b> of this target bit set with the
          * argument bit set. This bit set is modified so that each bit in it