Add std::num::Wrapping support

serde/src/de/impls.rs

@@ -1825,3 +1825,20 @@ where
         deserializer.deserialize_enum("Result", VARIANTS, ResultVisitor(PhantomData))
     }
 }
+
+////////////////////////////////////////////////////////////////////////////////
+
+#[cfg(feature = "std")]
+use std::num::Wrapping;
+
+#[cfg(feature = "std")]
+impl<'de, T> Deserialize<'de> for Wrapping<T>
+where 
+    T: Deserialize<'de> 
+{
+    fn deserialize<D>(deserializer: D) -> Result<Wrapping<T>, D::Error> 
+        where D: Deserializer<'de>
+    {
+        Deserialize::deserialize(deserializer).map(Wrapping)
+    }
+} 

serde/src/ser/impls.rs

@@ -664,3 +664,19 @@ impl Serialize for OsString {
         self.as_os_str().serialize(serializer)
     }
 }
+
+////////////////////////////////////////////////////////////////////////////////
+
+#[cfg(feature = "std")]
+use std::num::Wrapping;
+
+#[cfg(feature = "std")]
+impl<T: Serialize> Serialize for Wrapping<T> {
+    #[inline]
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        self.0.serialize(serializer)
+    }
+}