Add code example for wrapping_neg method for signed integers
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Thanks! @bors r+ rollup |
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…g-neg, r=workingjubilee 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`
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…mpiler-errors Rollup of 9 pull requests Successful merges: - rust-lang#129238 (Stabilize `Ipv6Addr::is_unique_local` and `Ipv6Addr::is_unicast_link_local`) - rust-lang#130867 (distinguish overflow and unimplemented in Step::steps_between) - rust-lang#131505 (use `confstr(_CS_DARWIN_USER_TEMP_DIR, ...)` as a `TMPDIR` fallback on Darwin) - rust-lang#132090 (Stop being so bail-y in candidate assembly) - rust-lang#133159 (Don't allow `-Zunstable-options` to take a value ) - rust-lang#133215 (Fix missing submodule in `./x vendor`) - rust-lang#133286 (Re-delay a resolve `bug` related to `Self`-ctor in patterns) - rust-lang#133301 (Add code example for `wrapping_neg` method for signed integers) - rust-lang#133313 (Use arc4random of libc for RTEMS target) r? `@ghost` `@rustbot` modify labels: rollup
zachs18
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Nov 22, 2024
| @@ -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);")] | |||
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| #[doc = concat!("assert_eq!(-100", stringify!($SelfT), ".wrapping_neg(), 100);")] | |
| #[doc = concat!("assert_eq!((-100", stringify!($SelfT), ").wrapping_neg(), 100);")] |
Should there be parentheses, like in the doctest for saturating_neg? Otherwise the emitted doctest will have like -100i32.wrapping_neg(), which is -(100i32.wrapping_neg()), not (-100i32).wrapping_neg(). The result is the same, but the former isn't actually calling wrapping_neg on a negative number.
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Oof, good catch! It's already part of a tested rollup so I'll send a follow-up.
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…mpiler-errors Rollup of 9 pull requests Successful merges: - rust-lang#129238 (Stabilize `Ipv6Addr::is_unique_local` and `Ipv6Addr::is_unicast_link_local`) - rust-lang#130867 (distinguish overflow and unimplemented in Step::steps_between) - rust-lang#131505 (use `confstr(_CS_DARWIN_USER_TEMP_DIR, ...)` as a `TMPDIR` fallback on Darwin) - rust-lang#132090 (Stop being so bail-y in candidate assembly) - rust-lang#133159 (Don't allow `-Zunstable-options` to take a value ) - rust-lang#133215 (Fix missing submodule in `./x vendor`) - rust-lang#133286 (Re-delay a resolve `bug` related to `Self`-ctor in patterns) - rust-lang#133301 (Add code example for `wrapping_neg` method for signed integers) - rust-lang#133313 (Use arc4random of libc for RTEMS target) r? `@ghost` `@rustbot` modify labels: rollup
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…g-neg, r=workingjubilee 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`
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Rollup of 13 pull requests Successful merges: - rust-lang#130867 (distinguish overflow and unimplemented in Step::steps_between) - rust-lang#131859 (Update TRPL to add new Chapter 17: Async and Await) - rust-lang#132090 (Stop being so bail-y in candidate assembly) - rust-lang#132658 (Detect const in pattern with typo) - rust-lang#133041 (Print name of env var in `--print=deployment-target`) - rust-lang#133102 (aarch64 softfloat target: always pass floats in int registers) - rust-lang#133159 (Don't allow `-Zunstable-options` to take a value ) - rust-lang#133217 ([AIX] Add option -X32_64 to the "strip" command) - rust-lang#133237 (Minimally constify `Add`) - rust-lang#133238 (re-export `is_loongarch_feature_detected`) - rust-lang#133286 (Re-delay a resolve `bug` related to `Self`-ctor in patterns) - rust-lang#133301 (Add code example for `wrapping_neg` method for signed integers) - rust-lang#133313 (Use arc4random of libc for RTEMS target) Failed merges: - rust-lang#133215 (Fix missing submodule in `./x vendor`) r? `@ghost` `@rustbot` modify labels: rollup
jieyouxu
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…g-neg, r=workingjubilee 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`
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With this example, we make it obvious that
wrapping_negworks both ways (neg to pos and pos to neg).r? @workingjubilee