1# Release 0.4.4 (2023-08-22) 2 3- [Implemented `From<bool>` for `BigInt` and `BigUint`.][239] 4- [Implemented `num_traits::Euclid` and `CheckedEuclid` for `BigInt` and `BigUint`.][245] 5- [Implemented ties-to-even for `BigInt` and `BigUint::to_f32` and `to_f64`.][271] 6- [Implemented `num_traits::FromBytes` and `ToBytes` for `BigInt` and `BigUint`.][276] 7- Limited pre-allocation from serde size hints against potential OOM. 8- Miscellaneous other code cleanups and maintenance tasks. 9 10**Contributors**: @AaronKutch, @archseer, @cuviper, @dramforever, @icecream17, 11@icedrocket, @janmarthedal, @jaybosamiya, @OliveIsAWord, @PatrickNorton, 12@smoelius, @waywardmonkeys 13 14[239]: https://github.com/rust-num/num-bigint/pull/239 15[245]: https://github.com/rust-num/num-bigint/pull/245 16[271]: https://github.com/rust-num/num-bigint/pull/271 17[276]: https://github.com/rust-num/num-bigint/pull/276 18 19# Release 0.4.3 (2021-11-02) 20 21- [GHSA-v935-pqmr-g8v9]: [Fix unexpected panics in multiplication.][228] 22 23**Contributors**: @arvidn, @cuviper, @guidovranken 24 25[228]: https://github.com/rust-num/num-bigint/pull/228 26[GHSA-v935-pqmr-g8v9]: https://github.com/rust-num/num-bigint/security/advisories/GHSA-v935-pqmr-g8v9 27 28# Release 0.4.2 (2021-09-03) 29 30- [Use explicit `Integer::div_ceil` to avoid the new unstable method.][219] 31 32**Contributors**: @catenacyber, @cuviper 33 34[219]: https://github.com/rust-num/num-bigint/pull/219 35 36# Release 0.4.1 (2021-08-27) 37 38- [Fixed scalar divide-by-zero panics.][200] 39- [Implemented `DoubleEndedIterator` for `U32Digits` and `U64Digits`.][208] 40- [Optimized multiplication to avoid unnecessary allocations.][199] 41- [Optimized string formatting for very large values.][216] 42 43**Contributors**: @cuviper, @PatrickNorton 44 45[199]: https://github.com/rust-num/num-bigint/pull/199 46[200]: https://github.com/rust-num/num-bigint/pull/200 47[208]: https://github.com/rust-num/num-bigint/pull/208 48[216]: https://github.com/rust-num/num-bigint/pull/216 49 50# Release 0.4.0 (2021-03-05) 51 52### Breaking Changes 53 54- Updated public dependences on [arbitrary, quickcheck][194], and [rand][185]: 55 - `arbitrary` support has been updated to 1.0, requiring Rust 1.40. 56 - `quickcheck` support has been updated to 1.0, requiring Rust 1.46. 57 - `rand` support has been updated to 0.8, requiring Rust 1.36. 58- [`Debug` now shows plain numeric values for `BigInt` and `BigUint`][195], 59 rather than the raw list of internal digits. 60 61**Contributors**: @cuviper, @Gelbpunkt 62 63[185]: https://github.com/rust-num/num-bigint/pull/185 64[194]: https://github.com/rust-num/num-bigint/pull/194 65[195]: https://github.com/rust-num/num-bigint/pull/195 66 67# Release 0.3.3 (2021-09-03) 68 69- [Use explicit `Integer::div_ceil` to avoid the new unstable method.][219] 70 71**Contributors**: @catenacyber, @cuviper 72 73# Release 0.3.2 (2021-03-04) 74 75- [The new `BigUint` methods `count_ones` and `trailing_ones`][175] return the 76 number of `1` bits in the entire value or just its least-significant tail, 77 respectively. 78- [The new `BigInt` and `BigUint` methods `bit` and `set_bit`][183] will read 79 and write individual bits of the value. For negative `BigInt`, bits are 80 determined as if they were in the two's complement representation. 81- [The `from_radix_le` and `from_radix_be` methods][187] now accept empty 82 buffers to represent zero. 83- [`BigInt` and `BigUint` can now iterate digits as `u32` or `u64`][192], 84 regardless of the actual internal digit size. 85 86**Contributors**: @BartMassey, @cuviper, @janmarthedal, @sebastianv89, @Speedy37 87 88[175]: https://github.com/rust-num/num-bigint/pull/175 89[183]: https://github.com/rust-num/num-bigint/pull/183 90[187]: https://github.com/rust-num/num-bigint/pull/187 91[192]: https://github.com/rust-num/num-bigint/pull/192 92 93# Release 0.3.1 (2020-11-03) 94 95- [Addition and subtraction now uses intrinsics][141] for performance on `x86` 96 and `x86_64` when built with Rust 1.33 or later. 97- [Conversions `to_f32` and `to_f64` now return infinity][163] for very large 98 numbers, rather than `None`. This does preserve the sign too, so a large 99 negative `BigInt` will convert to negative infinity. 100- [The optional `arbitrary` feature implements `arbitrary::Arbitrary`][166], 101 distinct from `quickcheck::Arbitrary`. 102- [The division algorithm has been optimized][170] to reduce the number of 103 temporary allocations and improve the internal guesses at each step. 104- [`BigInt` and `BigUint` will opportunistically shrink capacity][171] if the 105 internal vector is much larger than needed. 106 107**Contributors**: @cuviper, @e00E, @ejmahler, @notoria, @tczajka 108 109[141]: https://github.com/rust-num/num-bigint/pull/141 110[163]: https://github.com/rust-num/num-bigint/pull/163 111[166]: https://github.com/rust-num/num-bigint/pull/166 112[170]: https://github.com/rust-num/num-bigint/pull/170 113[171]: https://github.com/rust-num/num-bigint/pull/171 114 115# Release 0.3.0 (2020-06-12) 116 117### Enhancements 118 119- [The internal `BigDigit` may now be either `u32` or `u64`][62], although that 120 implementation detail is not exposed in the API. For now, this is chosen to 121 match the target pointer size, but may change in the future. 122- [No-`std` is now supported with the `alloc` crate on Rust 1.36][101]. 123- [`Pow` is now implemented for bigint values][137], not just references. 124- [`TryFrom` is now implemented on Rust 1.34 and later][123], converting signed 125 integers to unsigned, and narrowing big integers to primitives. 126- [`Shl` and `Shr` are now implemented for a variety of shift types][142]. 127- A new `trailing_zeros()` returns the number of consecutive zeros from the 128 least significant bit. 129- The new `BigInt::magnitude` and `into_parts` methods give access to its 130 `BigUint` part as the magnitude. 131 132### Breaking Changes 133 134- `num-bigint` now requires Rust 1.31 or greater. 135 - The "i128" opt-in feature was removed, now always available. 136- [Updated public dependences][110]: 137 - `rand` support has been updated to 0.7, requiring Rust 1.32. 138 - `quickcheck` support has been updated to 0.9, requiring Rust 1.34. 139- [Removed `impl Neg for BigUint`][145], which only ever panicked. 140- [Bit counts are now `u64` instead of `usize`][143]. 141 142**Contributors**: @cuviper, @dignifiedquire, @hansihe, 143@kpcyrd, @milesand, @tech6hutch 144 145[62]: https://github.com/rust-num/num-bigint/pull/62 146[101]: https://github.com/rust-num/num-bigint/pull/101 147[110]: https://github.com/rust-num/num-bigint/pull/110 148[123]: https://github.com/rust-num/num-bigint/pull/123 149[137]: https://github.com/rust-num/num-bigint/pull/137 150[142]: https://github.com/rust-num/num-bigint/pull/142 151[143]: https://github.com/rust-num/num-bigint/pull/143 152[145]: https://github.com/rust-num/num-bigint/pull/145 153 154# Release 0.2.6 (2020-01-27) 155 156- [Fix the promotion of negative `isize` in `BigInt` assign-ops][133]. 157 158**Contributors**: @cuviper, @HactarCE 159 160[133]: https://github.com/rust-num/num-bigint/pull/133 161 162# Release 0.2.5 (2020-01-09) 163 164- [Updated the `autocfg` build dependency to 1.0][126]. 165 166**Contributors**: @cuviper, @tspiteri 167 168[126]: https://github.com/rust-num/num-bigint/pull/126 169 170# Release 0.2.4 (2020-01-01) 171 172- [The new `BigUint::to_u32_digits` method][104] returns the number as a 173 little-endian vector of base-2<sup>32</sup> digits. The same method on 174 `BigInt` also returns the sign. 175- [`BigUint::modpow` now applies a modulus even for exponent 1][113], which 176 also affects `BigInt::modpow`. 177- [`BigInt::modpow` now returns the correct sign for negative bases with even 178 exponents][114]. 179 180[104]: https://github.com/rust-num/num-bigint/pull/104 181[113]: https://github.com/rust-num/num-bigint/pull/113 182[114]: https://github.com/rust-num/num-bigint/pull/114 183 184**Contributors**: @alex-ozdemir, @cuviper, @dingelish, @Speedy37, @youknowone 185 186# Release 0.2.3 (2019-09-03) 187 188- [`Pow` is now implemented for `BigUint` exponents][77]. 189- [The optional `quickcheck` feature enables implementations of `Arbitrary`][99]. 190- See the [full comparison][compare-0.2.3] for performance enhancements and more! 191 192[77]: https://github.com/rust-num/num-bigint/pull/77 193[99]: https://github.com/rust-num/num-bigint/pull/99 194[compare-0.2.3]: https://github.com/rust-num/num-bigint/compare/num-bigint-0.2.2...num-bigint-0.2.3 195 196**Contributors**: @cuviper, @lcnr, @maxbla, @mikelodder7, @mikong, 197@TheLetterTheta, @tspiteri, @XAMPPRocky, @youknowone 198 199# Release 0.2.2 (2018-12-14) 200 201- [The `Roots` implementations now use better initial guesses][71]. 202- [Fixed `to_signed_bytes_*` for some positive numbers][72], where the 203 most-significant byte is `0x80` and the rest are `0`. 204 205[71]: https://github.com/rust-num/num-bigint/pull/71 206[72]: https://github.com/rust-num/num-bigint/pull/72 207 208**Contributors**: @cuviper, @leodasvacas 209 210# Release 0.2.1 (2018-11-02) 211 212- [`RandBigInt` now uses `Rng::fill_bytes`][53] to improve performance, instead 213 of repeated `gen::<u32>` calls. The also affects the implementations of the 214 other `rand` traits. This may potentially change the values produced by some 215 seeded RNGs on previous versions, but the values were tested to be stable 216 with `ChaChaRng`, `IsaacRng`, and `XorShiftRng`. 217- [`BigInt` and `BigUint` now implement `num_integer::Roots`][56]. 218- [`BigInt` and `BigUint` now implement `num_traits::Pow`][54]. 219- [`BigInt` and `BigUint` now implement operators with 128-bit integers][64]. 220 221**Contributors**: @cuviper, @dignifiedquire, @mancabizjak, @Robbepop, 222@TheIronBorn, @thomwiggers 223 224[53]: https://github.com/rust-num/num-bigint/pull/53 225[54]: https://github.com/rust-num/num-bigint/pull/54 226[56]: https://github.com/rust-num/num-bigint/pull/56 227[64]: https://github.com/rust-num/num-bigint/pull/64 228 229# Release 0.2.0 (2018-05-25) 230 231### Enhancements 232 233- [`BigInt` and `BigUint` now implement `Product` and `Sum`][22] for iterators 234 of any item that we can `Mul` and `Add`, respectively. For example, a 235 factorial can now be simply: `let f: BigUint = (1u32..1000).product();` 236- [`BigInt` now supports two's-complement logic operations][26], namely 237 `BitAnd`, `BitOr`, `BitXor`, and `Not`. These act conceptually as if each 238 number had an infinite prefix of `0` or `1` bits for positive or negative. 239- [`BigInt` now supports assignment operators][41] like `AddAssign`. 240- [`BigInt` and `BigUint` now support conversions with `i128` and `u128`][44], 241 if sufficient compiler support is detected. 242- [`BigInt` and `BigUint` now implement rand's `SampleUniform` trait][48], and 243 [a custom `RandomBits` distribution samples by bit size][49]. 244- The release also includes other miscellaneous improvements to performance. 245 246### Breaking Changes 247 248- [`num-bigint` now requires rustc 1.15 or greater][23]. 249- [The crate now has a `std` feature, and won't build without it][46]. This is 250 in preparation for someday supporting `#![no_std]` with `alloc`. 251- [The `serde` dependency has been updated to 1.0][24], still disabled by 252 default. The `rustc-serialize` crate is no longer supported by `num-bigint`. 253- [The `rand` dependency has been updated to 0.5][48], now disabled by default. 254 This requires rustc 1.22 or greater for `rand`'s own requirement. 255- [`Shr for BigInt` now rounds down][8] rather than toward zero, matching the 256 behavior of the primitive integers for negative values. 257- [`ParseBigIntError` is now an opaque type][37]. 258- [The `big_digit` module is no longer public][38], nor are the `BigDigit` and 259 `DoubleBigDigit` types and `ZERO_BIG_DIGIT` constant that were re-exported in 260 the crate root. Public APIs which deal in digits, like `BigUint::from_slice`, 261 will now always be base-`u32`. 262 263**Contributors**: @clarcharr, @cuviper, @dodomorandi, @tiehuis, @tspiteri 264 265[8]: https://github.com/rust-num/num-bigint/pull/8 266[22]: https://github.com/rust-num/num-bigint/pull/22 267[23]: https://github.com/rust-num/num-bigint/pull/23 268[24]: https://github.com/rust-num/num-bigint/pull/24 269[26]: https://github.com/rust-num/num-bigint/pull/26 270[37]: https://github.com/rust-num/num-bigint/pull/37 271[38]: https://github.com/rust-num/num-bigint/pull/38 272[41]: https://github.com/rust-num/num-bigint/pull/41 273[44]: https://github.com/rust-num/num-bigint/pull/44 274[46]: https://github.com/rust-num/num-bigint/pull/46 275[48]: https://github.com/rust-num/num-bigint/pull/48 276[49]: https://github.com/rust-num/num-bigint/pull/49 277 278# Release 0.1.44 (2018-05-14) 279 280- [Division with single-digit divisors is now much faster.][42] 281- The README now compares [`ramp`, `rug`, `rust-gmp`][20], and [`apint`][21]. 282 283**Contributors**: @cuviper, @Robbepop 284 285[20]: https://github.com/rust-num/num-bigint/pull/20 286[21]: https://github.com/rust-num/num-bigint/pull/21 287[42]: https://github.com/rust-num/num-bigint/pull/42 288 289# Release 0.1.43 (2018-02-08) 290 291- [The new `BigInt::modpow`][18] performs signed modular exponentiation, using 292 the existing `BigUint::modpow` and rounding negatives similar to `mod_floor`. 293 294**Contributors**: @cuviper 295 296[18]: https://github.com/rust-num/num-bigint/pull/18 297 298 299# Release 0.1.42 (2018-02-07) 300 301- [num-bigint now has its own source repository][num-356] at [rust-num/num-bigint][home]. 302- [`lcm` now avoids creating a large intermediate product][num-350]. 303- [`gcd` now uses Stein's algorithm][15] with faster shifts instead of division. 304- [`rand` support is now extended to 0.4][11] (while still allowing 0.3). 305 306**Contributors**: @cuviper, @Emerentius, @ignatenkobrain, @mhogrefe 307 308[home]: https://github.com/rust-num/num-bigint 309[num-350]: https://github.com/rust-num/num/pull/350 310[num-356]: https://github.com/rust-num/num/pull/356 311[11]: https://github.com/rust-num/num-bigint/pull/11 312[15]: https://github.com/rust-num/num-bigint/pull/15 313 314 315# Prior releases 316 317No prior release notes were kept. Thanks all the same to the many 318contributors that have made this crate what it is! 319 320