Simplify the overflowing_neg expression

Lokathor · Lokathor · commit 481b354c9719 · 2019-02-01T18:43:32.000-07:00
diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs
@@ -1530,7 +1530,7 @@ assert_eq!(", stringify!($SelfT), "::MIN.overflowing_neg(), (", stringify!($Self
             #[inline]
             #[stable(feature = "wrapping", since = "1.7.0")]
             pub const fn overflowing_neg(self) -> (Self, bool) {
-                ((self ^ -1).wrapping_add(1), self == Self::min_value())
+                ((!self).wrapping_add(1), self == Self::min_value())
             }
         }
 

Original file line number	Diff line number	Diff line change
`@@ -1530,7 +1530,7 @@ assert_eq!(", stringify!($SelfT), "::MIN.overflowing_neg(), (", stringify!($Self`
`1530`	`1530`	`#[inline]`
`1531`	`1531`	`#[stable(feature = "wrapping", since = "1.7.0")]`
`1532`	`1532`	`pub const fn overflowing_neg(self) -> (Self, bool) {`
`1533`		`- ((self ^ -1).wrapping_add(1), self == Self::min_value())`
	`1533`	`+ ((!self).wrapping_add(1), self == Self::min_value())`
`1534`	`1534`	`}`
`1535`	`1535`	`}`
`1536`	`1536`