Ticket #5158: lowest_bit.patch

boost/pending/lowest_bit.hpp

@@ -32 +32 @@
 
     }
 
+    template<>
+    inline int lowest_bit(unsigned int x) {
+        assert(x >= 1); // PRE
 
+        return __builtin_ctz( x );
+    }
+
+    template<>
+    inline int lowest_bit(unsigned long x) {
+        assert(x >= 1); // PRE
+
+        return __builtin_ctzl( x );
+    }
+
+    template<>
+    inline int lowest_bit(unsigned long long x) {
+        assert(x >= 1); // PRE
+
+        return __builtin_ctzll( x );
+    }
 }