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Initial vendor packages

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Signed-off-by: Valentin Popov <valentin@popov.link>
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Valentin Popov
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{"files":{"Cargo.toml":"9951a0d2a04403a009b2b07953b430ece2b2ca44c44b1c5b2b566ba162cac951","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"6485b8ed310d3f0340bf1ad1f47645069ce4069dcc6bb46c7d5c6faf41de1fdb","README.md":"61154a19b71dd682b1955273e602e687d0cfc152afcfdf9fc9ee11beb083704a","RELEASES.md":"8e4d5cb5d36225b298f1412204d342858e6b7cc4bf4d39b53b48dd1be1c5083a","build.rs":"43a2d0ec88488d561f7b367d83f8cce81ad68bdfd352a3db9c881574a734c44f","src/lib.rs":"43762876ac4587ca6f553c029e69d3228f70c611fd7a1a8f0d4ea7859d9939e1","src/pow.rs":"c38cabc61e75e99425ee4fea7ac5b0712a648baa0635a2c40a6215edd43ae4a3"},"package":"0638a1c9d0a3c0914158145bc76cff373a75a627e6ecbfb71cbe6f453a5a19b0"}

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# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
#
# When uploading crates to the registry Cargo will automatically
# "normalize" Cargo.toml files for maximal compatibility
# with all versions of Cargo and also rewrite `path` dependencies
# to registry (e.g., crates.io) dependencies.
#
# If you are reading this file be aware that the original Cargo.toml
# will likely look very different (and much more reasonable).
# See Cargo.toml.orig for the original contents.
[package]
edition = "2018"
name = "num-rational"
version = "0.4.1"
authors = ["The Rust Project Developers"]
exclude = [
"/bors.toml",
"/ci/*",
"/.github/*",
]
description = "Rational numbers implementation for Rust"
homepage = "https://github.com/rust-num/num-rational"
documentation = "https://docs.rs/num-rational"
readme = "README.md"
keywords = [
"mathematics",
"numerics",
"fractions",
]
categories = [
"algorithms",
"data-structures",
"science",
"no-std",
]
license = "MIT OR Apache-2.0"
repository = "https://github.com/rust-num/num-rational"
[package.metadata.docs.rs]
features = [
"std",
"num-bigint-std",
"serde",
]
[dependencies.num-bigint]
version = "0.4.0"
optional = true
default-features = false
[dependencies.num-integer]
version = "0.1.42"
features = ["i128"]
default-features = false
[dependencies.num-traits]
version = "0.2.11"
features = ["i128"]
default-features = false
[dependencies.serde]
version = "1.0.0"
optional = true
default-features = false
[build-dependencies.autocfg]
version = "1.0.0"
[features]
default = [
"num-bigint-std",
"std",
]
num-bigint-std = ["num-bigint/std"]
std = [
"num-integer/std",
"num-traits/std",
]

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Copyright (c) 2014 The Rust Project Developers
Permission is hereby granted, free of charge, to any
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# num-rational
[![crate](https://img.shields.io/crates/v/num-rational.svg)](https://crates.io/crates/num-rational)
[![documentation](https://docs.rs/num-rational/badge.svg)](https://docs.rs/num-rational)
[![minimum rustc 1.31](https://img.shields.io/badge/rustc-1.31+-red.svg)](https://rust-lang.github.io/rfcs/2495-min-rust-version.html)
[![build status](https://github.com/rust-num/num-rational/workflows/master/badge.svg)](https://github.com/rust-num/num-rational/actions)
Generic `Rational` numbers (aka fractions) for Rust.
## Usage
Add this to your `Cargo.toml`:
```toml
[dependencies]
num-rational = "0.4"
```
## Features
This crate can be used without the standard library (`#![no_std]`) by disabling
the default `std` feature. Use this in `Cargo.toml`:
```toml
[dependencies.num-rational]
version = "0.4"
default-features = false
```
## Releases
Release notes are available in [RELEASES.md](RELEASES.md).
## Compatibility
The `num-rational` crate is tested for rustc 1.31 and greater.
## License
Licensed under either of
* [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0)
* [MIT license](http://opensource.org/licenses/MIT)
at your option.
### Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
dual licensed as above, without any additional terms or conditions.

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# Release 0.4.1 (2022-06-23)
- [Fewer `clone` calls are used when reducing a new `Ratio<T>`][98].
- [Conversions to floating point are better at avoiding underflow][104].
- [`Ratio<T>` now implements `Default`][105], returning a zero value.
**Contributors**: @cuviper, @lemmih, @MattX
[98]: https://github.com/rust-num/num-rational/pull/98
[104]: https://github.com/rust-num/num-rational/pull/104
[105]: https://github.com/rust-num/num-rational/pull/105
# Release 0.4.0 (2021-03-05)
- The optional `num-bigint` dependency is now 0.4.
- [The `Rational` alias for `Ratio<usize>` is now deprecated][92]. It is
recommended to use specific type sizes for numeric computation, like
`Rational32` and `Rational64`.
**Contributors**: @cuviper, @vks
[92]: https://github.com/rust-num/num-rational/pull/92
# Release 0.3.2 (2020-11-06)
- [Fix always rebuilding with --remap-path-prefix][88]
**Contributors**: @Nemo157
[88]: https://github.com/rust-num/num-rational/pull/88
# Release 0.3.1 (2020-10-29)
- [Handle to_f64() with raw division by zero][83].
- [Better document panic behaviour][84].
- Clarify the license specification as "MIT OR Apache-2.0".
**Contributors**: @cuviper, @zetok
[83]: https://github.com/rust-num/num-rational/pull/83
[84]: https://github.com/rust-num/num-rational/pull/84
# Release 0.3.0 (2020-06-13)
### Enhancements
- [`Ratio` now implements `ToPrimitive`][52].
- [`Ratio` now implements additional formatting traits][56]:
- `Binary`, `Octal`, `LowerHex`, `UpperHex`, `LowerExp`, `UpperExp`
- [The `Pow` implementations have been expanded][70].
- `Pow<BigInt>` and `Pow<BigUint>` are now implemented.
- `Pow<_> for &Ratio<T>` now uses `&T: Pow`.
- The inherent `pow` method now uses `&T: Pow`.
### Breaking Changes
- [`num-rational` now requires Rust 1.31 or greater][66].
- The "i128" opt-in feature was removed, now always available.
- [The "num-bigint-std" feature replaces "bigint" with `std` enabled][80].
- The "num-bigint" feature without `std` uses `alloc` on Rust 1.36+.
**Contributors**: @cuviper, @MattX, @maxbla
[52]: https://github.com/rust-num/num-rational/pull/52
[56]: https://github.com/rust-num/num-rational/pull/56
[66]: https://github.com/rust-num/num-rational/pull/66
[70]: https://github.com/rust-num/num-rational/pull/70
[80]: https://github.com/rust-num/num-rational/pull/80
# Release 0.2.4 (2020-03-17)
- [Fixed `CheckedDiv` when both dividend and divisor are 0][74].
- [Fixed `CheckedDiv` with `min_value()` numerators][76].
[74]: https://github.com/rust-num/num-rational/pull/74
[76]: https://github.com/rust-num/num-rational/pull/76
# Release 0.2.3 (2020-01-09)
- [`Ratio` now performs earlier reductions to avoid overflow with `+-*/%` operators][42].
- [`Ratio::{new_raw, numer, denom}` are now `const fn` for Rust 1.31 and later][48].
- [Updated the `autocfg` build dependency to 1.0][63].
**Contributors**: @cuviper, @dingelish, @jimbo1qaz, @maxbla
[42]: https://github.com/rust-num/num-rational/pull/42
[48]: https://github.com/rust-num/num-rational/pull/48
[63]: https://github.com/rust-num/num-rational/pull/63
# Release 0.2.2 (2019-06-10)
- [`Ratio` now implements `Zero::set_zero` and `One::set_one`][47].
**Contributors**: @cuviper, @ignatenkobrain, @vks
[47]: https://github.com/rust-num/num-rational/pull/47
# Release 0.2.1 (2018-06-22)
- Maintenance release to fix `html_root_url`.
# Release 0.2.0 (2018-06-19)
### Enhancements
- [`Ratio` now implements `One::is_one` and the `Inv` trait][19].
- [`Ratio` now implements `Sum` and `Product`][25].
- [`Ratio` now supports `i128` and `u128` components][29] with Rust 1.26+.
- [`Ratio` now implements the `Pow` trait][21].
### Breaking Changes
- [`num-rational` now requires rustc 1.15 or greater][18].
- [There is now a `std` feature][23], enabled by default, along with the
implication that building *without* this feature makes this a `#![no_std]`
crate. A few methods now require `FloatCore` instead of `Float`.
- [The `serde` dependency has been updated to 1.0][24], and `rustc-serialize`
is no longer supported by `num-rational`.
- The optional `num-bigint` dependency has been updated to 0.2, and should be
enabled using the `bigint-std` feature. In the future, it may be possible
to use the `bigint` feature with `no_std`.
**Contributors**: @clarcharr, @cuviper, @Emerentius, @robomancer-or, @vks
[18]: https://github.com/rust-num/num-rational/pull/18
[19]: https://github.com/rust-num/num-rational/pull/19
[21]: https://github.com/rust-num/num-rational/pull/21
[23]: https://github.com/rust-num/num-rational/pull/23
[24]: https://github.com/rust-num/num-rational/pull/24
[25]: https://github.com/rust-num/num-rational/pull/25
[29]: https://github.com/rust-num/num-rational/pull/29
# Release 0.1.42 (2018-02-08)
- Maintenance release to update dependencies.
# Release 0.1.41 (2018-01-26)
- [num-rational now has its own source repository][num-356] at [rust-num/num-rational][home].
- [`Ratio` now implements `CheckedAdd`, `CheckedSub`, `CheckedMul`, and `CheckedDiv`][11].
- [`Ratio` now implements `AddAssign`, `SubAssign`, `MulAssign`, `DivAssign`, and `RemAssign`][12]
with either `Ratio` or an integer on the right side. The non-assignment operators now also
accept integers as an operand.
- [`Ratio` operators now make fewer `clone()` calls][14].
Thanks to @c410-f3r, @cuviper, and @psimonyi for their contributions!
[home]: https://github.com/rust-num/num-rational
[num-356]: https://github.com/rust-num/num/pull/356
[11]: https://github.com/rust-num/num-rational/pull/11
[12]: https://github.com/rust-num/num-rational/pull/12
[14]: https://github.com/rust-num/num-rational/pull/14
# 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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fn main() {
let ac = autocfg::new();
if ac.probe_expression("format!(\"{:e}\", 0_isize)") {
println!("cargo:rustc-cfg=has_int_exp_fmt");
}
autocfg::rerun_path("build.rs");
}

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use crate::Ratio;
use core::cmp;
use num_integer::Integer;
use num_traits::{One, Pow};
macro_rules! pow_unsigned_impl {
(@ $exp:ty) => {
type Output = Ratio<T>;
#[inline]
fn pow(self, expon: $exp) -> Ratio<T> {
Ratio::new_raw(self.numer.pow(expon), self.denom.pow(expon))
}
};
($exp:ty) => {
impl<T: Clone + Integer + Pow<$exp, Output = T>> Pow<$exp> for Ratio<T> {
pow_unsigned_impl!(@ $exp);
}
impl<'a, T: Clone + Integer> Pow<$exp> for &'a Ratio<T>
where
&'a T: Pow<$exp, Output = T>,
{
pow_unsigned_impl!(@ $exp);
}
impl<'b, T: Clone + Integer + Pow<$exp, Output = T>> Pow<&'b $exp> for Ratio<T> {
type Output = Ratio<T>;
#[inline]
fn pow(self, expon: &'b $exp) -> Ratio<T> {
Pow::pow(self, *expon)
}
}
impl<'a, 'b, T: Clone + Integer> Pow<&'b $exp> for &'a Ratio<T>
where
&'a T: Pow<$exp, Output = T>,
{
type Output = Ratio<T>;
#[inline]
fn pow(self, expon: &'b $exp) -> Ratio<T> {
Pow::pow(self, *expon)
}
}
};
}
pow_unsigned_impl!(u8);
pow_unsigned_impl!(u16);
pow_unsigned_impl!(u32);
pow_unsigned_impl!(u64);
pow_unsigned_impl!(u128);
pow_unsigned_impl!(usize);
macro_rules! pow_signed_impl {
(@ &'b BigInt, BigUint) => {
type Output = Ratio<T>;
#[inline]
fn pow(self, expon: &'b BigInt) -> Ratio<T> {
match expon.sign() {
Sign::NoSign => One::one(),
Sign::Minus => {
Pow::pow(self, expon.magnitude()).into_recip()
}
Sign::Plus => Pow::pow(self, expon.magnitude()),
}
}
};
(@ $exp:ty, $unsigned:ty) => {
type Output = Ratio<T>;
#[inline]
fn pow(self, expon: $exp) -> Ratio<T> {
match expon.cmp(&0) {
cmp::Ordering::Equal => One::one(),
cmp::Ordering::Less => {
let expon = expon.wrapping_abs() as $unsigned;
Pow::pow(self, expon).into_recip()
}
cmp::Ordering::Greater => Pow::pow(self, expon as $unsigned),
}
}
};
($exp:ty, $unsigned:ty) => {
impl<T: Clone + Integer + Pow<$unsigned, Output = T>> Pow<$exp> for Ratio<T> {
pow_signed_impl!(@ $exp, $unsigned);
}
impl<'a, T: Clone + Integer> Pow<$exp> for &'a Ratio<T>
where
&'a T: Pow<$unsigned, Output = T>,
{
pow_signed_impl!(@ $exp, $unsigned);
}
impl<'b, T: Clone + Integer + Pow<$unsigned, Output = T>> Pow<&'b $exp> for Ratio<T> {
type Output = Ratio<T>;
#[inline]
fn pow(self, expon: &'b $exp) -> Ratio<T> {
Pow::pow(self, *expon)
}
}
impl<'a, 'b, T: Clone + Integer> Pow<&'b $exp> for &'a Ratio<T>
where
&'a T: Pow<$unsigned, Output = T>,
{
type Output = Ratio<T>;
#[inline]
fn pow(self, expon: &'b $exp) -> Ratio<T> {
Pow::pow(self, *expon)
}
}
};
}
pow_signed_impl!(i8, u8);
pow_signed_impl!(i16, u16);
pow_signed_impl!(i32, u32);
pow_signed_impl!(i64, u64);
pow_signed_impl!(i128, u128);
pow_signed_impl!(isize, usize);
#[cfg(feature = "num-bigint")]
mod bigint {
use super::*;
use num_bigint::{BigInt, BigUint, Sign};
impl<T: Clone + Integer + for<'b> Pow<&'b BigUint, Output = T>> Pow<BigUint> for Ratio<T> {
type Output = Ratio<T>;
#[inline]
fn pow(self, expon: BigUint) -> Ratio<T> {
Pow::pow(self, &expon)
}
}
impl<'a, T: Clone + Integer> Pow<BigUint> for &'a Ratio<T>
where
&'a T: for<'b> Pow<&'b BigUint, Output = T>,
{
type Output = Ratio<T>;
#[inline]
fn pow(self, expon: BigUint) -> Ratio<T> {
Pow::pow(self, &expon)
}
}
impl<'b, T: Clone + Integer + Pow<&'b BigUint, Output = T>> Pow<&'b BigUint> for Ratio<T> {
pow_unsigned_impl!(@ &'b BigUint);
}
impl<'a, 'b, T: Clone + Integer> Pow<&'b BigUint> for &'a Ratio<T>
where
&'a T: Pow<&'b BigUint, Output = T>,
{
pow_unsigned_impl!(@ &'b BigUint);
}
impl<T: Clone + Integer + for<'b> Pow<&'b BigUint, Output = T>> Pow<BigInt> for Ratio<T> {
type Output = Ratio<T>;
#[inline]
fn pow(self, expon: BigInt) -> Ratio<T> {
Pow::pow(self, &expon)
}
}
impl<'a, T: Clone + Integer> Pow<BigInt> for &'a Ratio<T>
where
&'a T: for<'b> Pow<&'b BigUint, Output = T>,
{
type Output = Ratio<T>;
#[inline]
fn pow(self, expon: BigInt) -> Ratio<T> {
Pow::pow(self, &expon)
}
}
impl<'b, T: Clone + Integer + Pow<&'b BigUint, Output = T>> Pow<&'b BigInt> for Ratio<T> {
pow_signed_impl!(@ &'b BigInt, BigUint);
}
impl<'a, 'b, T: Clone + Integer> Pow<&'b BigInt> for &'a Ratio<T>
where
&'a T: Pow<&'b BigUint, Output = T>,
{
pow_signed_impl!(@ &'b BigInt, BigUint);
}
}