Rollup merge of rust-lang#133301 - GuillaumeGomez:add-example-wrapping-neg, r=workingjubilee

matthiaskrgr · web-flow · commit f4139353bf60 · 2024-11-24T11:08:19.000+01:00
Add code example for `wrapping_neg` method for signed integers

With this example, we make it obvious that `wrapping_neg` works both ways (neg to pos and pos to neg).

r? `@workingjubilee`
diff --git a/core/src/num/int_macros.rs b/core/src/num/int_macros.rs
@@ -2101,6 +2101,7 @@ macro_rules! int_impl {
         ///
         /// ```
         #[doc = concat!("assert_eq!(100", stringify!($SelfT), ".wrapping_neg(), -100);")]
+        #[doc = concat!("assert_eq!((-100", stringify!($SelfT), ").wrapping_neg(), 100);")]
         #[doc = concat!("assert_eq!(", stringify!($SelfT), "::MIN.wrapping_neg(), ", stringify!($SelfT), "::MIN);")]
         /// ```
         #[stable(feature = "num_wrapping", since = "1.2.0")]
