Add max and min default fns to Ord trait

Pursuant to issue #25663, this commit adds the max and min functions to the Ord trait, enabling items that implement Ord to use UFCS (ex. 1.max(2)) instead of the longer std::cmp::max(1,2) format.

2 files changed, 11 insertions, 0 deletions

diff --git a/src/libcore/tests/cmp.rs b/src/libcore/tests/cmp.rs
index e3c65ad8b33..8c5179f5993 100644
--- a/src/libcore/tests/cmp.rs
+++ b/src/libcore/tests/cmp.rs
@@ -29,6 +29,16 @@ fn test_mut_int_totalord() {
 }
 
 #[test]
+fn test_ord_max_min() {
+    assert_eq!(1.max(2), 2);
+    assert_eq!(2.max(1), 2);
+    assert_eq!(1.min(2), 1);
+    assert_eq!(2.min(1), 1);
+    assert_eq!(1.max(1), 1);
+    assert_eq!(1.min(1), 1);
+}
+
+#[test]
 fn test_ordering_reverse() {
     assert_eq!(Less.reverse(), Greater);
     assert_eq!(Equal.reverse(), Equal);
diff --git a/src/libcore/tests/lib.rs b/src/libcore/tests/lib.rs
index 505e51fa80b..77a9307f43e 100644
--- a/src/libcore/tests/lib.rs
+++ b/src/libcore/tests/lib.rs
@@ -26,6 +26,7 @@
 #![feature(iter_rfind)]
 #![feature(libc)]
 #![feature(nonzero)]
+#![feature(ord_max_min)]
 #![feature(rand)]
 #![feature(raw)]
 #![feature(sip_hash_13)]