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cpubits: add expression example #1422

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tarcieri merged 1 commit into from
Jan 21, 2026
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cpubits: add expression example #1422

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15 changes: 15 additions & 0 deletions cpubits/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -79,6 +79,21 @@
/// }
/// ```
///
/// ## Use as an expression
///
/// It's also possible to use the macro as an expression, although in somewhat limited contexts
/// due to its attribute handling:
///
/// ```
/// fn detected_cpubits() -> u32 {
/// cpubits::cpubits! {
/// 16 => { 16 }
/// 32 => { 32 }
/// 64 => { 64 }
/// }
/// }
/// ```
///
/// # Selection rules
///
/// The macro augments `target_pointer_width`-based selection with specific overrides which promote
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