[fix]: Fixed ordering for Dec and I256 types

.changelog/unreleased/bug-fixes/1763-fix-dec-ord.md

@@ -0,0 +1,2 @@
+- Fixes the ordering for I256 type.
+  ([\#1763](https://github.com/anoma/namada/pull/1763))

core/src/types/dec.rs

@@ -613,4 +613,11 @@ mod test_dec {
                 .unwrap()
         );
     }
+
+    #[test]
+    fn test_ordering() {
+        let smaller = Dec::from_str("6483947304.195066085701").unwrap();
+        let larger = Dec::from_str("32418116583.390243854642").unwrap();
+        assert!(smaller < larger);
+    }
 }

core/src/types/uint.rs

@@ -367,12 +367,12 @@ impl PartialOrd for I256 {
             (true, true) => {
                 let this = self.abs();
                 let that = other.abs();
-                this.0.partial_cmp(&that.0)
+                this.partial_cmp(&that)
             }
             (false, false) => {
                 let this = self.abs();
                 let that = other.abs();
-                that.0.partial_cmp(&this.0)
+                that.partial_cmp(&this)
             }
         }
     }