Changeset 2dd5c6d for libcfa/src/enum.hfa

Timestamp:

Aug 4, 2024, 1:58:13 AM (5 hours ago)

Author:

JiadaL <j82liang@…>

Branches:

master

Parents:

bcb41f7

Message:

Update +=/-= for enums

File:

• libcfa/src/enum.hfa (modified) (1 diff)

libcfa/src/enum.hfa

@@ -72 +72 @@
         }
         
+        E ?-=? ( E & l, one_t ) {
+                l = pred(l);
+                return l;
+        }
+
+        E ?+=? ( E & l, int i ) {
+                int pos = posn(l) + i;
+                return fromInt(pos);
+        }
+
+        E ?-=? ( E & l, int i ) {
+                int pos = posn(l) - i;
+                return fromInt(pos);
+        }
+        
         E ?++( E & l ) {
                 E ret = l;