The [fixed crate] provides fixed-point numbers. Currently it uses the [typenum crate] for the fractional bit count; it is planned to move to [const generics] when they are implemented by the Rust compiler.
The crate provides the following types:
FixedI8] is a signed eight-bit fixed-point number,FixedI16] is a signed 16-bit fixed-point number,FixedI32] is a signed 32-bit fixed-point number,FixedI64] is a signed 64-bit fixed-point number,FixedI128] is a signed 128-bit fixed-point number,FixedU8] is an unsigned eight-bit fixed-point number,FixedU16] is an unsigned 16-bit fixed-point number,FixedU32] is an unsigned 32-bit fixed-point number,FixedU64] is an unsigned 64-bit fixed-point number, andFixedU128] is an unsigned 128-bit fixed-point number.All fixed-point numbers can have Frac fractional bits, where Frac
can have any value from 0 up to and including the size of the number
in bits. When Frac is 0, the fixed-point number behaves like an
integer. When Frac is equal to the number of bits, the value of the
fixed-point number lies in the range −0.5 ≤ x < 0.5 for signed
fixed-point numbers, and in the range 0 ≤ x < 1 for unsigned
fixed-point numbers.
Unsigned] constants provided by the [typenum crate] are now
used for the number of fractional bits.Details on other releases can be found in [RELEASES.md].
The fixed crate is available on crates.io. To use it in your crate, add it as a dependency inside [Cargo.toml]:
toml
[dependencies]
fixed = "0.1.0"
You also need to declare it by adding this to your crate root (usually lib.rs or main.rs):
rust
extern crate fixed;
This crate is free software: you can redistribute it and/or modify it under the terms of either
at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache License, Version 2.0, shall be dual licensed as above, without any additional terms or conditions.