5880752b9a
Stabilize unsigned and float variants of `num_midpoint` feature This PR proposes that we stabilize the unsigned variants of the [`num_midpoint`](https://github.com/rust-lang/rust/issues/110840#issue-1684506201) feature as well as the floats variants, since they are not subject to any unresolved questions, which is equivalent to doing `(a + b) / 2` (and `(a + b) >> 1`) in a sufficiently large number. The stabilized API surface would be: ```rust /// Calculates the middle point of `self` and `rhs`. /// /// `midpoint(a, b)` is `(a + b) / 2` as if it were performed in a sufficiently-large unsigned integral type. /// This implies that the result is always rounded towards negative infinity and that no overflow will ever occur. impl u{8,16,32,64,128,size} { pub const fn midpoint(self, rhs: Self) -> Self; } impl NonZeroU{8,16,32,64,size} { pub const fn midpoint(self, rhs: Self) -> Self; } impl f{32,64} { pub const fn midpoint(self, rhs: Self) -> Self; } ``` The signed variants `u{8,16,32,64,128,size}` would remain gated, until a decision is made about the rounding mode, in other words that the [unresolved questions](https://github.com/rust-lang/rust/issues/110840#issue-1684506201) are resolved. cc `@rust-lang/libs-api` cc `@scottmcm` r? libs-api |
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