Changeset 26417 in webkit for trunk/JavaScriptCore/wtf/HashTraits.h

Timestamp:

Oct 12, 2007, 5:47:57 AM (18 years ago)

Author:

oliver

Message:

Reviewed by Maciej.

Use intHash to hash floats and doubles too.

• ChangeLog:
• wtf/HashFunctions.h: (WTF::FloatHash::hash): (WTF::FloatHash::equal): (WTF::):
• wtf/HashTraits.h: (WTF::FloatHashTraits::emptyValue): (WTF::FloatHashTraits::deletedValue): (WTF::):

File:

• trunk/JavaScriptCore/wtf/HashTraits.h (modified) (1 diff)

trunk/JavaScriptCore/wtf/HashTraits.h

@@ -95 +95 @@
     };
     
+    template<typename T> struct FloatHashTraits {
+        typedef T TraitType;
+        typedef HashTraits<T> StorageTraits;
+        static T emptyValue() { return std::numeric_limits<T>::infinity(); }
+        static T deletedValue() { return -std::numeric_limits<T>::infinity(); }
+        static const bool emptyValueIsZero = false;
+        static const bool needsDestruction = false;
+        static const bool needsRef = false;
+    };
+    template<> struct HashTraits<float> : FloatHashTraits<float> {
+    };
+    template<> struct HashTraits<double> : FloatHashTraits<double> {
+    };
+
     template<typename P> struct HashTraits<P*> : GenericHashTraits<P*> {
         typedef HashTraits<typename IntTypes<sizeof(P*)>::SignedType> StorageTraits;