rust/library/std
bors 0a3b557d52 Auto merge of #95317 - Jules-Bertholet:round_ties_to_even, r=pnkfelix,m-ou-se,scottmcm
Add `round_ties_even` to `f32` and `f64`

Tracking issue: #96710

Redux of #82273. See also #55107

Adds a new method, `round_ties_even`, to `f32` and `f64`, that rounds the float to the nearest integer , rounding halfway cases to the number with an even least significant bit. Uses the `roundeven` LLVM intrinsic to do this.

Of the five IEEE 754 rounding modes, this is the only one that doesn't already have a round-to-integer function exposed by Rust (others are `round`, `floor`, `ceil`, and `trunc`).  Ties-to-even is also the rounding mode used for int-to-float and float-to-float `as` casts, as well as float arithmentic operations. So not having an explicit rounding method for it seems like an oversight.

Bikeshed: this PR currently uses `round_ties_even` for the name of the method. But maybe `round_ties_to_even` is better, or `round_even`, or `round_to_even`?
2023-03-07 09:43:12 +00:00
..
benches mv std libs to library/ 2020-07-27 19:51:13 -05:00
primitive_docs Add primitive documentation to libcore 2021-09-12 02:23:08 +00:00
src Auto merge of #95317 - Jules-Bertholet:round_ties_to_even, r=pnkfelix,m-ou-se,scottmcm 2023-03-07 09:43:12 +00:00
tests Exclude SGX from create_dir_all_bare test 2023-02-21 18:33:20 +00:00
build.rs Add QNX Neutrino support to libstd 2023-02-28 15:59:47 +01:00
Cargo.toml Auto merge of #106673 - flba-eb:add_qnx_nto_stdlib, r=workingjubilee 2023-03-02 02:41:42 +00:00