From b8cad8254385272e1cd6d7ab04b11c88b21da54e Mon Sep 17 00:00:00 2001
From: Bruce Mitchener <bruce.mitchener@gmail.com>
Date: Fri, 22 Sep 2017 06:00:28 +0700
Subject: [PATCH] Derive PartialEq and PartialOrd for enums.

Fixes #163.
---
 src/Language/Rust/Corrode/C.md | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/Language/Rust/Corrode/C.md b/src/Language/Rust/Corrode/C.md
index 3ae88cf..c5263a1 100644
--- a/src/Language/Rust/Corrode/C.md
+++ b/src/Language/Rust/Corrode/C.md
@@ -3737,11 +3737,12 @@ environment.
 
 Like `struct` above, `enum` needs both `Copy` and `Clone`. But we also
 force each `enum` to be represented just like `enumReprType`, defined
-above.
+above. Since these are enumerations with numeric values, it is also
+useful for them to derive `PartialEq` and `PartialOrd`.
 
 ```haskell
             let Rust.TypeName repr = toRustType enumReprType
-            let attrs = [ Rust.Attribute "derive(Clone, Copy)"
+            let attrs = [ Rust.Attribute "derive(Clone, Copy, PartialEq, PartialOrd)"
                         , Rust.Attribute (concat [ "repr(", repr, ")" ])
                         ]
             when shouldEmit $