Rollup merge of #110070 - scottmcm:wrapping-neg, r=cuviper

The `wrapping_neg` example for unsigned types shouldn't use `i8`

Probably it should have at least one example with an unsigned type.

Author: JohnTitor

library/core/src/num/uint_macros.rs

@@ -1363,12 +1363,11 @@ macro_rules! uint_impl {
         ///
         /// Basic usage:
         ///
-        /// Please note that this example is shared between integer types.
-        /// Which explains why `i8` is used here.
-        ///
         /// ```
-        /// assert_eq!(100i8.wrapping_neg(), -100);
-        /// assert_eq!((-128i8).wrapping_neg(), -128);
+        #[doc = concat!("assert_eq!(0_", stringify!($SelfT), ".wrapping_neg(), 0);")]
+        #[doc = concat!("assert_eq!(", stringify!($SelfT), "::MAX.wrapping_neg(), 1);")]
+        #[doc = concat!("assert_eq!(13_", stringify!($SelfT), ".wrapping_neg(), (!13) + 1);")]
+        #[doc = concat!("assert_eq!(42_", stringify!($SelfT), ".wrapping_neg(), !(42 - 1));")]
         /// ```
         #[stable(feature = "num_wrapping", since = "1.2.0")]
         #[rustc_const_stable(feature = "const_wrapping_math", since = "1.32.0")]