Implement signum with Ord
#106798
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Implement signum with Ord
#106798
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scottmcm
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Jan 18, 2023
| // (<https://graphics.stanford.edu/~seander/bithacks.html#CopyIntegerSign>) | ||
| // so delegate it to `Ord` which is already producing -1/0/+1 | ||
| // exactly like we need and can be the place to deal with the complexity. | ||
| self.cmp(&0) as _ |
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It's of course not a big deal, but self <=> 0 does feel nicer to me here than needing &0 and autoref.
(Just mentioning it, @joshtriplett, since I'd brought up spaceship in the meeting today. Obviously it's not a blocker for this PR.)
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2-week reroll to hopefully get a less-busy reviewer: |
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@bors r+ |
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…iaskrgr Rollup of 11 pull requests Successful merges: - rust-lang#96763 (Fix maintainer validation message) - rust-lang#106540 (Insert whitespace to avoid ident concatenation in suggestion) - rust-lang#106763 (print why a test was ignored if its the only test specified) - rust-lang#106769 (libtest: Print why a test was ignored if it's the only test specified.) - rust-lang#106798 (Implement `signum` with `Ord`) - rust-lang#107006 (Output tree representation on thir-tree) - rust-lang#107078 (Update wording of invalid_doc_attributes docs.) - rust-lang#107169 (Pass `--locked` to the x test tidy call) - rust-lang#107431 (docs: remove colon from time header) - rust-lang#107432 (rustdoc: remove unused class `has-srclink`) - rust-lang#107448 (When stamp doesn't exist, should say Error, and print path to stamp file) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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Rather than needing to do things like #105840 for
signumtoo, might as well just implement that method usingOrd, since it's doing the same "I need-1/0/+1" behaviour thatcmpis already doing.This also seems to slightly improve the assembly: https://rust.godbolt.org/z/5oEEqbxK1