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// Copyright © 2016–2018 University of Malta // This program is free software: you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public License // as published by the Free Software Foundation, either version 3 of // the License, or (at your option) any later version. // // This program is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License and a copy of the GNU General Public License along with // this program. If not, see <http://www.gnu.org/licenses/>. //! # Arbitrary-precision numbers //! //! The `rug` crate provides integers and floating-point numbers with //! arbitrary precision and correct rounding. Its main features are: //! //! * big [integers][rug int] with arbitrary precision, //! * big [rational numbers][rug rat] with arbitrary precision, //! * multi-precision [floating-point numbers][rug flo] with correct //! rounding, and //! * multi-precision [complex numbers][rug com] with correct //! rounding. //! //! This crate is free software: you can redistribute it and/or modify //! it under the terms of the GNU Lesser General Public License as //! published by the Free Software Foundation, either version 3 of the //! License, or (at your option) any later version. See the full text //! of the [GNU LGPL][lgpl] and [GNU GPL][gpl] for details. //! //! This crate depends on the low-level bindings in the //! [`gmp-mpfr-sys`][sys] crate, which provides Rust FFI bindings for: //! //! * the [GNU Multiple Precision Arithmetic Library][gmp] (GMP), //! * the [GNU MPFR Library][mpfr], a library for multiple-precision //! floating-point computations, and //! * [GNU MPC][mpc], a library for the arithmetic of complex numbers //! with arbitrarily high precision. //! //! It can be helpful to refer to the documentation of the //! [GMP][gmp doc], [MPFR][mpfr doc] and [MPC][mpc doc] libraries. //! //! ## Examples //! //! ```rust //! extern crate rug; //! # #[cfg(feature = "integer")] //! use rug::{Assign, Integer}; //! //! fn main() { //! # #[cfg(feature = "integer")] { //! // Create an integer initialized as zero. //! let mut int = Integer::new(); //! assert_eq!(int, 0); //! int.assign(14); //! assert_eq!(int, 14); //! let hex_160 = "ffff0000ffff0000ffff0000ffff0000ffff0000"; //! int.assign_str_radix(hex_160, 16).unwrap(); //! assert_eq!(int.significant_bits(), 160); //! int = (int >> 128) - 1; //! assert_eq!(int, 0xfffe_ffff_u32); //! # } //! } //! ``` //! //! ## Usage //! //! This crate requires rustc version 1.18.0 or later. //! //! To use `rug` in your crate, add `extern crate rug;` to the crate //! root and add `rug` as a dependency in `Cargo.toml`: //! //! ```toml //! [dependencies] //! rug = "0.9.3" //! ``` //! //! The `rug` crate depends on the low-level bindings in the //! [`gmp-mpfr-sys`][sys] crate. This should be transparent on //! GNU/Linux and macOS, but may need some work on Windows. See the //! [`gmp-mpfr-sys`][sys] documentation for some details. //! //! ### Optional features //! //! The `rug` crate has six optional features: //! //! 1. `integer`, enabled by default. //! 2. `rational`, enabled by default. This feature requires the //! `integer` feature. //! 3. `float`, enabled by default. //! 4. `complex`, enabled by default. This feature requires the //! `float` feature. //! 5. `rand`, enabled by default. This features requires the //! `integer` feature. //! 6. `serde`, disabled by default. This provides serialization //! support for the `Integer`, `Rational`, `Float` and `Complex` //! types, providing that they are enabled. //! //! The first five optional features are enabled by default; to //! disable them add this to `Cargo.toml`: //! //! ```toml //! [dependencies.rug] //! version = "0.9.3" //! default-features = false //! ``` //! //! If none of the first five optional features are selected, the //! [`gmp-mpfr-sys`][sys] crate is not required and thus not enabled. //! //! To use features selectively, you can add this to `Cargo.toml`: //! //! ```toml //! [dependencies.rug] //! version = "0.9.3" //! default-features = false //! # Pick which features to use //! features = ["integer", "float", "rand"] //! ``` //! //! [gmp doc]: https://tspiteri.gitlab.io/gmp-mpfr-sys/gmp/index.html //! [gmp]: https://gmplib.org/ //! [gpl]: https://www.gnu.org/licenses/gpl-3.0.html //! [lgpl]: https://www.gnu.org/licenses/lgpl-3.0.en.html //! [mpc doc]: https://tspiteri.gitlab.io/gmp-mpfr-sys/mpc/index.html //! [mpc]: http://www.multiprecision.org/ //! [mpfr doc]: https://tspiteri.gitlab.io/gmp-mpfr-sys/mpfr/index.html //! [mpfr]: http://www.mpfr.org/ //! [rug com]: struct.Complex.html //! [rug flo]: struct.Float.html //! [rug int]: struct.Integer.html //! [rug ops]: ops/index.html //! [rug rat]: struct.Rational.html //! [sys]: https://docs.rs/gmp-mpfr-sys/^1.1.0/gmp_mpfr_sys/index.html #![warn(missing_docs)] #![doc(html_root_url = "https://docs.rs/rug/0.9.3")] #![doc(test(attr(deny(warnings))))] #[cfg(any(feature = "integer", feature = "float"))] extern crate gmp_mpfr_sys; #[cfg(all(test, feature = "serde", any(feature = "integer", feature = "float")))] extern crate bincode; #[cfg(all(test, feature = "serde", any(feature = "integer", feature = "float")))] extern crate byteorder; #[cfg(all(feature = "serde", any(feature = "integer", feature = "float")))] extern crate serde; #[cfg(all(test, feature = "serde", any(feature = "integer", feature = "float")))] #[macro_use] extern crate serde_json; #[cfg(all(test, feature = "serde", any(feature = "integer", feature = "float")))] extern crate serde_test; #[macro_use] mod macros; mod cast; mod ext; mod inner; #[cfg(any(feature = "integer", feature = "float"))] mod misc; #[cfg(all(feature = "serde", any(feature = "integer", feature = "float")))] mod serdeize; /// Assigns to a number from another value. /// /// # Examples /// /// ```rust /// use rug::Assign; /// struct I(i32); /// impl Assign<i16> for I { /// fn assign(&mut self, rhs: i16) { /// self.0 = rhs as i32; /// } /// } /// let mut i = I(0); /// i.assign(42_i16); /// assert_eq!(i.0, 42); /// ``` pub trait Assign<Src = Self> { /// Peforms the assignement. /// /// # Examples /// /// ```rust /// # #[cfg(feature = "integer")] { /// use rug::{Assign, Integer}; /// let mut i = Integer::from(15); /// assert_eq!(i, 15); /// i.assign(23); /// assert_eq!(i, 23); /// # } /// ``` fn assign(&mut self, src: Src); } pub mod ops; mod ops_prim; #[cfg(feature = "integer")] pub mod integer; #[cfg(feature = "integer")] pub use integer::big::Integer; #[cfg(feature = "rational")] pub mod rational; #[cfg(feature = "rational")] pub use rational::big::Rational; #[cfg(feature = "float")] pub mod float; #[cfg(feature = "float")] pub use float::big::Float; #[cfg(feature = "complex")] pub mod complex; #[cfg(feature = "complex")] pub use complex::big::Complex; #[cfg(feature = "rand")] pub mod rand; #[cfg(test)] #[cfg(any(feature = "integer", feature = "float"))] mod tests { #[cfg(feature = "float")] use std::{f32, f64}; use std::{i32, i64, u32, u64}; pub const U32: &[u32] = &[0, 1, 1000, 1001, i32::MAX as u32 + 1, u32::MAX]; pub const I32: &[i32] = &[i32::MIN, -1001, -1000, -1, 0, 1, 1000, 1001, i32::MAX]; pub const U64: &[u64] = &[ 0, 1, 1000, 1001, i32::MAX as u64 + 1, u32::MAX as u64 + 1, u64::MAX, ]; pub const I64: &[i64] = &[ i64::MIN, -(u32::MAX as i64) - 1, i32::MIN as i64 - 1, -1001, -1000, -1, 0, 1, 1000, 1001, i32::MAX as i64 + 1, u32::MAX as i64 + 1, i64::MAX, ]; #[cfg(feature = "float")] pub const F32: &[f32] = &[ -f32::NAN, f32::NEG_INFINITY, f32::MIN, -12.0e30, -2.0, -1.0, -f32::MIN_POSITIVE, -0.0, 0.0, f32::MIN_POSITIVE, 1.0, 2.0, 12.0e30, f32::MAX, f32::INFINITY, f32::NAN, ]; #[cfg(feature = "float")] pub const F64: &[f64] = &[ -f64::NAN, f64::NEG_INFINITY, f64::MIN, -12.0e43, -2.0, -1.0, -f64::MIN_POSITIVE, -0.0, 0.0, f64::MIN_POSITIVE, 1.0, 2.0, 12.0e43, f64::MAX, f64::INFINITY, f64::NAN, ]; }