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ZeroTierOne/zeroidc/vendor/num-bigint/RELEASES.md

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# Release 0.4.3 (2021-11-02)
- [GHSA-v935-pqmr-g8v9]: [Fix unexpected panics in multiplication.][228]
**Contributors**: @arvidn, @cuviper, @guidovranken
[228]: https://github.com/rust-num/num-bigint/pull/228
[GHSA-v935-pqmr-g8v9]: https://github.com/rust-num/num-bigint/security/advisories/GHSA-v935-pqmr-g8v9
# Release 0.4.2 (2021-09-03)
- [Use explicit `Integer::div_ceil` to avoid the new unstable method.][219]
**Contributors**: @catenacyber, @cuviper
[219]: https://github.com/rust-num/num-bigint/pull/219
# Release 0.4.1 (2021-08-27)
- [Fixed scalar divide-by-zero panics.][200]
- [Implemented `DoubleEndedIterator` for `U32Digits` and `U64Digits`.][208]
- [Optimized multiplication to avoid unnecessary allocations.][199]
- [Optimized string formatting for very large values.][216]
**Contributors**: @cuviper, @PatrickNorton
[199]: https://github.com/rust-num/num-bigint/pull/199
[200]: https://github.com/rust-num/num-bigint/pull/200
[208]: https://github.com/rust-num/num-bigint/pull/208
[216]: https://github.com/rust-num/num-bigint/pull/216
# Release 0.4.0 (2021-03-05)
### Breaking Changes
- Updated public dependences on [arbitrary, quickcheck][194], and [rand][185]:
- `arbitrary` support has been updated to 1.0, requiring Rust 1.40.
- `quickcheck` support has been updated to 1.0, requiring Rust 1.46.
- `rand` support has been updated to 0.8, requiring Rust 1.36.
- [`Debug` now shows plain numeric values for `BigInt` and `BigUint`][195],
rather than the raw list of internal digits.
**Contributors**: @cuviper, @Gelbpunkt
[185]: https://github.com/rust-num/num-bigint/pull/185
[194]: https://github.com/rust-num/num-bigint/pull/194
[195]: https://github.com/rust-num/num-bigint/pull/195
# Release 0.3.3 (2021-09-03)
- [Use explicit `Integer::div_ceil` to avoid the new unstable method.][219]
**Contributors**: @catenacyber, @cuviper
# Release 0.3.2 (2021-03-04)
- [The new `BigUint` methods `count_ones` and `trailing_ones`][175] return the
number of `1` bits in the entire value or just its least-significant tail,
respectively.
- [The new `BigInt` and `BigUint` methods `bit` and `set_bit`][183] will read
and write individual bits of the value. For negative `BigInt`, bits are
determined as if they were in the two's complement representation.
- [The `from_radix_le` and `from_radix_be` methods][187] now accept empty
buffers to represent zero.
- [`BigInt` and `BigUint` can now iterate digits as `u32` or `u64`][192],
regardless of the actual internal digit size.
**Contributors**: @BartMassey, @cuviper, @janmarthedal, @sebastianv89, @Speedy37
[175]: https://github.com/rust-num/num-bigint/pull/175
[183]: https://github.com/rust-num/num-bigint/pull/183
[187]: https://github.com/rust-num/num-bigint/pull/187
[192]: https://github.com/rust-num/num-bigint/pull/192
# Release 0.3.1 (2020-11-03)
- [Addition and subtraction now uses intrinsics][141] for performance on `x86`
and `x86_64` when built with Rust 1.33 or later.
- [Conversions `to_f32` and `to_f64` now return infinity][163] for very large
numbers, rather than `None`. This does preserve the sign too, so a large
negative `BigInt` will convert to negative infinity.
- [The optional `arbitrary` feature implements `arbitrary::Arbitrary`][166],
distinct from `quickcheck::Arbitrary`.
- [The division algorithm has been optimized][170] to reduce the number of
temporary allocations and improve the internal guesses at each step.
- [`BigInt` and `BigUint` will opportunistically shrink capacity][171] if the
internal vector is much larger than needed.
**Contributors**: @cuviper, @e00E, @ejmahler, @notoria, @tczajka
[141]: https://github.com/rust-num/num-bigint/pull/141
[163]: https://github.com/rust-num/num-bigint/pull/163
[166]: https://github.com/rust-num/num-bigint/pull/166
[170]: https://github.com/rust-num/num-bigint/pull/170
[171]: https://github.com/rust-num/num-bigint/pull/171
# Release 0.3.0 (2020-06-12)
### Enhancements
- [The internal `BigDigit` may now be either `u32` or `u64`][62], although that
implementation detail is not exposed in the API. For now, this is chosen to
match the target pointer size, but may change in the future.
- [No-`std` is now supported with the `alloc` crate on Rust 1.36][101].
- [`Pow` is now implemented for bigint values][137], not just references.
- [`TryFrom` is now implemented on Rust 1.34 and later][123], converting signed
integers to unsigned, and narrowing big integers to primitives.
- [`Shl` and `Shr` are now implemented for a variety of shift types][142].
- A new `trailing_zeros()` returns the number of consecutive zeros from the
least significant bit.
- The new `BigInt::magnitude` and `into_parts` methods give access to its
`BigUint` part as the magnitude.
### Breaking Changes
- `num-bigint` now requires Rust 1.31 or greater.
- The "i128" opt-in feature was removed, now always available.
- [Updated public dependences][110]:
- `rand` support has been updated to 0.7, requiring Rust 1.32.
- `quickcheck` support has been updated to 0.9, requiring Rust 1.34.
- [Removed `impl Neg for BigUint`][145], which only ever panicked.
- [Bit counts are now `u64` instead of `usize`][143].
**Contributors**: @cuviper, @dignifiedquire, @hansihe,
@kpcyrd, @milesand, @tech6hutch
[62]: https://github.com/rust-num/num-bigint/pull/62
[101]: https://github.com/rust-num/num-bigint/pull/101
[110]: https://github.com/rust-num/num-bigint/pull/110
[123]: https://github.com/rust-num/num-bigint/pull/123
[137]: https://github.com/rust-num/num-bigint/pull/137
[142]: https://github.com/rust-num/num-bigint/pull/142
[143]: https://github.com/rust-num/num-bigint/pull/143
[145]: https://github.com/rust-num/num-bigint/pull/145
# Release 0.2.6 (2020-01-27)
- [Fix the promotion of negative `isize` in `BigInt` assign-ops][133].
**Contributors**: @cuviper, @HactarCE
[133]: https://github.com/rust-num/num-bigint/pull/133
# Release 0.2.5 (2020-01-09)
- [Updated the `autocfg` build dependency to 1.0][126].
**Contributors**: @cuviper, @tspiteri
[126]: https://github.com/rust-num/num-bigint/pull/126
# Release 0.2.4 (2020-01-01)
- [The new `BigUint::to_u32_digits` method][104] returns the number as a
little-endian vector of base-2<sup>32</sup> digits. The same method on
`BigInt` also returns the sign.
- [`BigUint::modpow` now applies a modulus even for exponent 1][113], which
also affects `BigInt::modpow`.
- [`BigInt::modpow` now returns the correct sign for negative bases with even
exponents][114].
[104]: https://github.com/rust-num/num-bigint/pull/104
[113]: https://github.com/rust-num/num-bigint/pull/113
[114]: https://github.com/rust-num/num-bigint/pull/114
**Contributors**: @alex-ozdemir, @cuviper, @dingelish, @Speedy37, @youknowone
# Release 0.2.3 (2019-09-03)
- [`Pow` is now implemented for `BigUint` exponents][77].
- [The optional `quickcheck` feature enables implementations of `Arbitrary`][99].
- See the [full comparison][compare-0.2.3] for performance enhancements and more!
[77]: https://github.com/rust-num/num-bigint/pull/77
[99]: https://github.com/rust-num/num-bigint/pull/99
[compare-0.2.3]: https://github.com/rust-num/num-bigint/compare/num-bigint-0.2.2...num-bigint-0.2.3
**Contributors**: @cuviper, @lcnr, @maxbla, @mikelodder7, @mikong,
@TheLetterTheta, @tspiteri, @XAMPPRocky, @youknowone
# Release 0.2.2 (2018-12-14)
- [The `Roots` implementations now use better initial guesses][71].
- [Fixed `to_signed_bytes_*` for some positive numbers][72], where the
most-significant byte is `0x80` and the rest are `0`.
[71]: https://github.com/rust-num/num-bigint/pull/71
[72]: https://github.com/rust-num/num-bigint/pull/72
**Contributors**: @cuviper, @leodasvacas
# Release 0.2.1 (2018-11-02)
- [`RandBigInt` now uses `Rng::fill_bytes`][53] to improve performance, instead
of repeated `gen::<u32>` calls. The also affects the implementations of the
other `rand` traits. This may potentially change the values produced by some
seeded RNGs on previous versions, but the values were tested to be stable
with `ChaChaRng`, `IsaacRng`, and `XorShiftRng`.
- [`BigInt` and `BigUint` now implement `num_integer::Roots`][56].
- [`BigInt` and `BigUint` now implement `num_traits::Pow`][54].
- [`BigInt` and `BigUint` now implement operators with 128-bit integers][64].
**Contributors**: @cuviper, @dignifiedquire, @mancabizjak, @Robbepop,
@TheIronBorn, @thomwiggers
[53]: https://github.com/rust-num/num-bigint/pull/53
[54]: https://github.com/rust-num/num-bigint/pull/54
[56]: https://github.com/rust-num/num-bigint/pull/56
[64]: https://github.com/rust-num/num-bigint/pull/64
# Release 0.2.0 (2018-05-25)
### Enhancements
- [`BigInt` and `BigUint` now implement `Product` and `Sum`][22] for iterators
of any item that we can `Mul` and `Add`, respectively. For example, a
factorial can now be simply: `let f: BigUint = (1u32..1000).product();`
- [`BigInt` now supports two's-complement logic operations][26], namely
`BitAnd`, `BitOr`, `BitXor`, and `Not`. These act conceptually as if each
number had an infinite prefix of `0` or `1` bits for positive or negative.
- [`BigInt` now supports assignment operators][41] like `AddAssign`.
- [`BigInt` and `BigUint` now support conversions with `i128` and `u128`][44],
if sufficient compiler support is detected.
- [`BigInt` and `BigUint` now implement rand's `SampleUniform` trait][48], and
[a custom `RandomBits` distribution samples by bit size][49].
- The release also includes other miscellaneous improvements to performance.
### Breaking Changes
- [`num-bigint` now requires rustc 1.15 or greater][23].
- [The crate now has a `std` feature, and won't build without it][46]. This is
in preparation for someday supporting `#![no_std]` with `alloc`.
- [The `serde` dependency has been updated to 1.0][24], still disabled by
default. The `rustc-serialize` crate is no longer supported by `num-bigint`.
- [The `rand` dependency has been updated to 0.5][48], now disabled by default.
This requires rustc 1.22 or greater for `rand`'s own requirement.
- [`Shr for BigInt` now rounds down][8] rather than toward zero, matching the
behavior of the primitive integers for negative values.
- [`ParseBigIntError` is now an opaque type][37].
- [The `big_digit` module is no longer public][38], nor are the `BigDigit` and
`DoubleBigDigit` types and `ZERO_BIG_DIGIT` constant that were re-exported in
the crate root. Public APIs which deal in digits, like `BigUint::from_slice`,
will now always be base-`u32`.
**Contributors**: @clarcharr, @cuviper, @dodomorandi, @tiehuis, @tspiteri
[8]: https://github.com/rust-num/num-bigint/pull/8
[22]: https://github.com/rust-num/num-bigint/pull/22
[23]: https://github.com/rust-num/num-bigint/pull/23
[24]: https://github.com/rust-num/num-bigint/pull/24
[26]: https://github.com/rust-num/num-bigint/pull/26
[37]: https://github.com/rust-num/num-bigint/pull/37
[38]: https://github.com/rust-num/num-bigint/pull/38
[41]: https://github.com/rust-num/num-bigint/pull/41
[44]: https://github.com/rust-num/num-bigint/pull/44
[46]: https://github.com/rust-num/num-bigint/pull/46
[48]: https://github.com/rust-num/num-bigint/pull/48
[49]: https://github.com/rust-num/num-bigint/pull/49
# Release 0.1.44 (2018-05-14)
- [Division with single-digit divisors is now much faster.][42]
- The README now compares [`ramp`, `rug`, `rust-gmp`][20], and [`apint`][21].
**Contributors**: @cuviper, @Robbepop
[20]: https://github.com/rust-num/num-bigint/pull/20
[21]: https://github.com/rust-num/num-bigint/pull/21
[42]: https://github.com/rust-num/num-bigint/pull/42
# Release 0.1.43 (2018-02-08)
- [The new `BigInt::modpow`][18] performs signed modular exponentiation, using
the existing `BigUint::modpow` and rounding negatives similar to `mod_floor`.
**Contributors**: @cuviper
[18]: https://github.com/rust-num/num-bigint/pull/18
# Release 0.1.42 (2018-02-07)
- [num-bigint now has its own source repository][num-356] at [rust-num/num-bigint][home].
- [`lcm` now avoids creating a large intermediate product][num-350].
- [`gcd` now uses Stein's algorithm][15] with faster shifts instead of division.
- [`rand` support is now extended to 0.4][11] (while still allowing 0.3).
**Contributors**: @cuviper, @Emerentius, @ignatenkobrain, @mhogrefe
[home]: https://github.com/rust-num/num-bigint
[num-350]: https://github.com/rust-num/num/pull/350
[num-356]: https://github.com/rust-num/num/pull/356
[11]: https://github.com/rust-num/num-bigint/pull/11
[15]: https://github.com/rust-num/num-bigint/pull/15
# Prior releases
No prior release notes were kept. Thanks all the same to the many
contributors that have made this crate what it is!
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