Rollup of 9 pull requests #89589
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Rollup of 9 pull requests #89589
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I intend these changes to be helpful to readers who are not yet familiar with the quirks of floating-point numbers. Additionally, I felt it was misleading to describe `Nan` as being the result of division by zero, since most divisions by zero (except for 0/0) produce `Infinite` floats, so I moved that remark to the `Infinite` variant with adjustment. The first sentence of the `Nan` documentation is copied from `f32`; I followed the example of the `f64` documentation by referring to `f32` for general concepts, rather than duplicating the text.
Co-authored-by: kennytm <kennytm@gmail.com>
Co-authored-by: kennytm <kennytm@gmail.com>
to solve rust-lang#87528 build.
Made the fields of VecDeque's IterMut private by creating a IterMut::new(...) function to create a new instance of IterMut and migrating usage to use IterMut::new(...).
Fixes rust-lang#67007 Currently, a 'borrowed data escapes' error does not mention the specific lifetime involved (except indirectly through a suggestion about adding a lifetime bound). We now explain the specific lifetime relationship that failed to hold, which improves otherwise vague error messages.
…ennytm
Add functions to add unsigned and signed integers
This PR adds methods to unsigned integers to add signed integers with good overflow semantics under `#![feature(mixed_integer_ops)]`.
The added API is:
```rust
// `uX` is `u8`, `u16`, `u32`, `u64`,`u128`, `usize`
impl uX {
pub const fn checked_add_signed(self, iX) -> Option<Self>;
pub const fn overflowing_add_signed(self, iX) -> (Self, bool);
pub const fn saturating_add_signed(self, iX) -> Self;
pub const fn wrapping_add_signed(self, iX) -> Self;
}
impl iX {
pub const fn checked_add_unsigned(self, uX) -> Option<Self>;
pub const fn overflowing_add_unsigned(self, uX) -> (Self, bool);
pub const fn saturating_add_unsigned(self, uX) -> Self;
pub const fn wrapping_add_unsigned(self, uX) -> Self;
pub const fn checked_sub_unsigned(self, uX) -> Option<Self>;
pub const fn overflowing_sub_unsigned(self, uX) -> (Self, bool);
pub const fn saturating_sub_unsigned(self, uX) -> Self;
pub const fn wrapping_sub_unsigned(self, uX) -> Self;
}
```
Maybe it would be interesting to also have `add_signed` that panics in debug and wraps in release ?
Expand documentation for `FpCategory`. I intend these changes to be helpful to readers who are not yet familiar with the quirks of floating-point numbers. Additionally, I felt it was misleading to describe `Nan` as being the result of division by zero, since most divisions by zero (except for 0/0) produce `Infinite` floats, so I moved that remark to the `Infinite` variant with adjustment. The first sentence of the `Nan` documentation is copied from `f32`; I followed the example of the `f64` documentation by referring to `f32` for general concepts, rather than duplicating the text. ---- I considered making similar changes to the documentation of the `is_*` methods of floats, but decided that that was a much larger and trickier problem; here, each of the variants' descriptions can be expected to be read in context of being mutually exclusive with the others.
…te, r=joshtriplett refactor: VecDeques Drain fields to private Made the fields of VecDeque's Drain private by creating a Drain::new(...) function to create a new instance of Drain and migrating usage to use Drain::new(...).
…ivate, r=joshtriplett refactor: make VecDeque's IterMut fields module-private, not just crate-private Made the fields of VecDeque's IterMut private by creating a IterMut::new(...) function to create a new instance of IterMut and migrating usage to use IterMut::new(...).
… r=jackh726 print-type-sizes: skip field printing for primitives Fixes rust-lang#86528.
…davidtwco Note specific regions involved in 'borrowed data escapes' error Fixes rust-lang#67007 Currently, a 'borrowed data escapes' error does not mention the specific lifetime involved (except indirectly through a suggestion about adding a lifetime bound). We now explain the specific lifetime relationship that failed to hold, which improves otherwise vague error messages.
Fix suggestion to borrow when casting from pointer to reference Fixes rust-lang#89497.
…d, r=dtolnay library std, libc dependency update to solve rust-lang#87528 build.
Add a test for generic_const_exprs Test that const_eval_resolve evaluates consts with unused inference vars in substs r? `@lcnr`
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@bors r+ p=2 |
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📌 Commit fe52017 has been approved by |
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⌛ Testing commit fe52017 with merge a33c7db9b9a4f32e7ab2289027f75575f0e2ce72... |
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A job failed! Check out the build log: (web) (plain) Click to see the possible cause of the failure (guessed by this bot) |
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💔 Test failed - checks-actions |
bors
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There issue #89593 with builds, please, bless it with priority ) |
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@bors rollup=never (it's a rollup) |
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Successful merges:
FpCategory. #88523 (Expand documentation forFpCategory.)Failed merges:
r? @ghost
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