1 files changed, 21 insertions, 0 deletions
diff --git a/source/core/slang-uint-set.h b/source/core/slang-uint-set.h
index f2c573865..4912ae504 100644
--- a/source/core/slang-uint-set.h
+++ b/source/core/slang-uint-set.h
@@ -52,6 +52,8 @@ public:
         /// Returns true if the value is present
     inline bool contains(UInt val) const;
 
+    inline bool contains(const UIntSet& set) const;
+
         /// ==
     bool operator==(const UIntSet& set) const;
         /// !=
@@ -111,6 +113,25 @@ inline bool UIntSet::contains(UInt val) const
 }
 
 // --------------------------------------------------------------------------
+inline bool UIntSet::contains(const UIntSet& set) const
+{
+    for (Index i = 0; i < set.m_buffer.getCount(); i++)
+    {
+        if (i >= m_buffer.getCount())
+        {
+            if (set.m_buffer[i])
+                return false;
+        }
+        else
+        {
+            if ((m_buffer[i] & set.m_buffer[i]) != set.m_buffer[i])
+                return false;
+        }
+    }
+    return true;
+}
+
+// --------------------------------------------------------------------------
 inline void UIntSet::add(UInt val)
 {
     const Index idx = Index(val >> kElementShift);