cpubits: shorthand for | and more combinations
#1398
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- Allows omitting the `16` in `16 | 32` - Adds `16` vs `32 | 64` as an option, where `64` can be omitted
tarcieri
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Jan 19, 2026
In #1398 I experimented with making some of the syntax implicit, but as soon as it became clear I also needed to add support for ignoring certain bit sizes and only running code on others that quickly became a bad idea. This commit changes the syntax to be fully explicit, like a `match` expression that takes an implicit argument of the number of bits with no other weird rules. If you want the block to appear in the code on e.g. 16-bit targets, they need to be explicitly named. This commit implements all permutations except for `16 | 32 | 64` since that amounts to no gating whatsoever, which defeats the point of using this crate.
tarcieri
added a commit
that referenced
this pull request
Jan 19, 2026
In #1398 I experimented with making some of the syntax implicit, but as soon as it became clear I also needed to add support for ignoring certain bit sizes and only running code on others that quickly became a bad idea. This commit changes the syntax to be fully explicit, like a `match` expression that takes an implicit argument of the number of bits with no other weird rules. If you want the block to appear in the code on e.g. 16-bit targets, they need to be explicitly named. This commit implements all permutations except for `16 | 32 | 64` since that amounts to no gating whatsoever, which defeats the point of using this crate.
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16in16 | 3216vs32 | 64as an option, where64can be omitted