Change API for the Compare function

git-svn-id: svn://svn.cc65.org/cc65/trunk@2573 b7a2c559-68d2-44c3-8de9-860c34a00d81

src/ca65/filetab.c

@@ -65,7 +65,10 @@ static HashNode* HT_GetHashNode (void* Entry);
 /* Given a pointer to the user entry data, return a pointer to the hash node */
 
 static int HT_Compare (const void* Key1, const void* Key2);
-/* Compare two keys for equality */
+/* Compare two keys. The function must return a value less than zero if
+ * Key1 is smaller than Key2, zero if both are equal, and a value greater
+ * than zero if Key1 is greater then Key2.
+ */
 
 
 
@@ -136,9 +139,12 @@ static HashNode* HT_GetHashNode (void* Entry)
 
 
 static int HT_Compare (const void* Key1, const void* Key2)
-/* Compare two keys for equality */
+/* Compare two keys. The function must return a value less than zero if
+ * Key1 is smaller than Key2, zero if both are equal, and a value greater
+ * than zero if Key1 is greater then Key2.
+ */
 {
-    return (*(const unsigned*)Key1 == *(const unsigned*)Key2);
+    return (int)*(const unsigned*)Key1 - (int)*(const unsigned*)Key2;
 }
 
 

src/ca65/macro.c

@@ -70,7 +70,10 @@ static HashNode* HT_GetHashNode (void* Entry);
 /* Given a pointer to the user entry data, return a pointer to the hash node */
 
 static int HT_Compare (const void* Key1, const void* Key2);
-/* Compare two keys for equality */
+/* Compare two keys. The function must return a value less than zero if
+ * Key1 is smaller than Key2, zero if both are equal, and a value greater
+ * than zero if Key1 is greater then Key2.
+ */
 
 
 
@@ -175,9 +178,12 @@ static HashNode* HT_GetHashNode (void* Entry)
 
 
 static int HT_Compare (const void* Key1, const void* Key2)
-/* Compare two keys for equality */
+/* Compare two keys. The function must return a value less than zero if
+ * Key1 is smaller than Key2, zero if both are equal, and a value greater
+ * than zero if Key1 is greater then Key2.
+ */
 {
-    return (strcmp (Key1, Key2) == 0);
+    return strcmp (Key1, Key2);
 }