---

yaml
---
r: 34549
b: refs/heads/snap-stage3
c: d5dc66a
h: refs/heads/master
i:
  34547: f5d64a4
v: v3

Author: pkgw

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: cd6f24f9d14ac90d167386a56e7a6ac1f0318195
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
-refs/heads/snap-stage3: 7eae397e58641392c20b4baefb39257264f7dcde
+refs/heads/snap-stage3: d5dc66ad3181ab4fa5fc3ccd806b25f3e5ddbe8f
 refs/heads/try: d324a424d8f84b1eb049b12cf34182bda91b0024
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b

branches/snap-stage3/src/libcore/cmp.rs

@@ -30,7 +30,10 @@ and `Eq` to overload the `==` and `!=` operators.
 *
 * Eventually this may be simplified to only require
 * an `eq` method, with the other generated from
-* a default implementation.
+* a default implementation. However it should
+* remain possible to implement `ne` separately, for
+* compatibility with floating-point NaN semantics
+* (cf. IEEE 754-2008 section 5.11).
 */
 #[lang="eq"]
 pub trait Eq {
@@ -43,7 +46,10 @@ pub trait Eq {
 *
 * Eventually this may be simplified to only require
 * an `le` method, with the others generated from
-* default implementations.
+* default implementations. However it should remain
+* possible to implement the others separately, for
+* compatibility with floating-point NaN semantics
+* (cf. IEEE 754-2008 section 5.11).
 */
 #[lang="ord"]
 pub trait Ord {
@@ -59,8 +65,8 @@ pub pure fn lt<T: Ord>(v1: &T, v2: &T) -> bool {
 }
 
 #[inline(always)]
-pub pure fn le<T: Ord Eq>(v1: &T, v2: &T) -> bool {
-    (*v1).lt(v2) || (*v1).eq(v2)
+pub pure fn le<T: Ord>(v1: &T, v2: &T) -> bool {
+    (*v1).le(v2)
 }
 
 #[inline(always)]