Conversation
|
At this point, we can remove the internal Details |
dhardy
force-pushed
the
no-usize-except-uniform
branch
from
e950543 to
01c3e1f
Compare
|
Some regressions are quite substantial, do we understand why? E.g.: |
More half-baked thoughts:
I just pushed a slightly different impl of |
|
Adding support for |
Given that the I'd like to get some more general benchmarking done, but decided to push #1490 first. |
This is not required with 32-bit usize
dhardy
force-pushed
the
no-usize-except-uniform
branch
from
c8745e7 to
7bdd833
Compare
|
Rebased. Running benches now... |
|
Comparing In summary, the Overall, benchmark results are probably a smidgen worse, with most of the differences likely due to different inlining. I find this acceptable (given our goal of portable ranged |
- Add UniformUsize - Support ..end and ..=ub range syntax for unsigned ints
- Add UniformUsize - Support ..end and ..=ub range syntax for unsigned ints
Implementations of `Distribution<T> for StandardUniform` was removed for all SIMD types containing `isize` and `usize` following the removal of implementations for `isize` and `usize` in the `rand` crate. See rust-random/rand#1487 for details. There is a new `UniformUsize` distribution, but it is limited to a maximum value under u32::MAX for portability across 32/64bits and for use as array indexes and lengths. Probably it is not suitable if a real uniform distribution is needed.
Implementations of `Distribution<T> for StandardUniform` for all SIMD types containing `isize` and `usize` now generate random values using `fill_bytes()`. Uniform distribution for `isize` and `usize` was removed from `rand` crate. See rust-random/rand#1487 for details. There is a new `UniformUsize` distribution, but it is limited to a maximum value under u32::MAX for portability across 32/64bits and for use as array indexes and lengths. Probably it is not suitable if a real uniform distribution is required.
Implementations of `Distribution<T> for StandardUniform` for all SIMD types containing `isize` and `usize` now generate random values using `fill_bytes()`. Uniform distribution for `isize` and `usize` was removed from `rand` crate. See rust-random/rand#1487 for details. There is a new `UniformUsize` distribution, but it is limited to a maximum value under u32::MAX for portability across 32/64bits and for use as array indexes and lengths. Probably it is not suitable if a real uniform distribution is required.
Implementations of `Distribution<T> for StandardUniform` for all SIMD types containing `isize` and `usize` now generate random values using `fill_bytes()`. Uniform distribution for `isize` and `usize` was removed from `rand` crate. See rust-random/rand#1487 for details. There is a new `UniformUsize` distribution, but it is limited to a maximum value under u32::MAX for portability across 32/64bits and for use as array indexes and lengths. Probably it is not suitable if a real uniform distribution is required.
Implementations of `Distribution<T> for StandardUniform` for all SIMD types containing `isize` and `usize` now generate random values using `fill_bytes()`. Uniform distribution for `isize` and `usize` was removed from `rand` crate. See rust-random/rand#1487 for details. There is a new `UniformUsize` distribution, but it is limited to a maximum value under u32::MAX for portability across 32/64bits and for use as array indexes and lengths. Probably it is not suitable if a real uniform distribution is required.
Implementations of `Distribution<T> for StandardUniform` for all SIMD types containing `isize` and `usize` now generate random values using `fill_bytes()`. Uniform distribution for `isize` and `usize` was removed from `rand` crate. See rust-random/rand#1487 for details. There is a new `UniformUsize` distribution, but it is limited to a maximum value under u32::MAX for portability across 32/64bits and for use as array indexes and lengths. Probably it is not suitable if a real uniform distribution is required.
3 participants
CHANGELOG.mdentrySummary
This is #1471 without
Rng::gen_index. Since we can't haveUniformUsizewithout directly supportingusizeinRng::gen_rangethis is probably the best way to go.