# ChangelogThis project follows semantic versioning.The MSRV (Minimum Supported Rust Version) is 1.37.0, and typenum is testedagainst this Rust version.### Unreleased### 1.20.0 (2026-04-18)- [removed] Removed `no_std` feature flag (deprecated since 1.3.0)- [removed] Removed `force_unix_path_separator` feature flag (deprecated since 1.17.0)- [changed] Replaced `build.rs` script with pre-generated test files- [added] Indexing into tuples - [changed] MSRV now 1.41.0### 1.19.0 (2025-10-01)- [fixed] Conflicting trait implementations with the `const-generics` feature  on 16-bit targets- [fixed] Remove deprecated feature flag- [added] Support `core::fmt::Binary`- [added] Constants for 2^N - 1- [added] Implemented `ToInt` for `isize`, `i128`, and `u128`### 1.18.0 (2025-02-17)- [changed] Remove build scripts; instead check-in the built code (PR #219)- [added] Constants for 3600 (PR #220)- [added] Elixir-style syntax for `tarr!` macro (PR #214)- [added] `FoldAdd` and `FoldMul` to get the sum/product of an array (PR #209)### 1.17.0 (2023-09-15)- [removed] Remove `force_unix_path_separator` feature, make it the default- [added] docs.rs metadata and cfg options- [added] Playground metadata### 1.16.0 (2022-12-05)- [added] `const INT` field to the `ToInt` trait.- [added] `const-generics` field with `U<N>` mapping where `N` is a const generic.### 1.15.0 (2021-12-25)- [fixed] Cross-compilation issue due to doing math in build script. (PR #177)- [added] New feature `scale_info` for using inside  [Substrate](https://github.com/paritytech/substrate.git)-based runtimes (PR  #175)### 1.14.0 (2021-09-01)- [changed] Sealed all marker traits. Documentation already stated that these  should not be implemented outside the crate, so this is not considered a  breaking change.### 1.13.0 (2021-03-12)- [changed] MSRV from 1.22.0 to 1.37.0.- [fixed] `op` macro with 2018 edition import.- [changed] Allowed calling `assert_type_eq` and `assert_type` at top level.- [added] Marker trait `Zero` for `Z0`, `U0`, and `B0`.- [added] Implementation of `Pow` trait for f32 and f64 with negative exponent.- [added] Trait `ToInt`.### 1.12.0 (2020-04-13)- [added] Feature `force_unix_path_separator` to support building without Cargo.- [added] Greatest common divisor operator `Gcd` with alias `Gcf`.- [added] `gcd` to the `op!` macro.- [changed] Added `Copy` bound to `Rhs` of `Mul<Rhs>` impl for `<TArr<V, A>`.- [changed] Added `Copy` bound to `Rhs` of `Div<Rhs>` impl for `<TArr<V, A>`.- [changed] Added `Copy` bound to `Rhs` of `PartialDiv<Rhs>` impl for `<TArr<V, A>`.- [changed] Added `Copy` bound to `Rhs` of `Rem<Rhs>` impl for `<TArr<V, A>`.- [fixed] Make all functions #[inline].### 1.11.2 (2019-08-26)- [fixed] Cross compilation from Linux to Windows.### 1.11.1 (2019-08-25)- [fixed] Builds on earlier Rust builds again and added Rust 1.22.0 to Travis to  prevent future breakage.### 1.11.0 (2019-08-25)- [added] Integer `log2` to the `op!` macro.- [added] Integer binary logarithm operator `Logarithm2` with alias `Log2`.- [changed] Removed `feature(i128_type)` when running with the `i128`  feature. Kept the feature flag.  for typenum to maintain compatibility with  old Rust versions.- [added] Integer `sqrt` to the `op!` macro.- [added] Integer square root operator `SquareRoot` with alias `Sqrt`.- [fixed] Bug with attempting to create U1024 type alias twice.### 1.10.0 (2018-03-11)- [added] The `PowerOfTwo` marker trait.- [added] Associated constants for `Bit`, `Unsigned`, and `Integer`.### 1.9.0 (2017-05-14)- [added] The `Abs` type operator and corresponding `AbsVal` alias.- [added] The feature `i128` that enables creating 128-bit integers from  typenums.- [added] The `assert_type!` and `assert_type_eq!` macros.- [added] Operators to the `op!` macro, including those performed by `cmp!`.- [fixed] Bug in `op!` macro involving functions and convoluted expressions.- [deprecated] The `cmp!` macro.### 1.8.0 (2017-04-12)- [added] The `op!` macro for conveniently performing type-level operations.- [added] The `cmp!` macro for conveniently performing type-level comparisons.- [added] Some comparison type-operators that are used by the `cmp!` macro.### 1.7.0 (2017-03-24)- [added] Type operators `Min` and `Max` with accompanying aliases `Minimum` and  `Maximum`### 1.6.0 (2017-02-24)- [fixed] Bug in `Array` division.- [fixed] Bug where `Rem` would sometimes exit early with the wrong answer.- [added] `PartialDiv` operator that performs division as a partial function --  it's defined only when there is no remainder.### 1.5.2 (2017-02-04)- [fixed] Bug between `Div` implementation and type system.### 1.5.1 (2016-11-08)- [fixed] Expanded implementation of `Pow` for primitives.### 1.5.0 (2016-11-03)- [added] Functions to the `Pow` and `Len` traits. This is *technically* a  breaking change, but it would only break someone's code if they have a custom  impl for `Pow`. I would be very surprised if that is anyone other than me.### 1.4.0 (2016-10-29)- [added] Type-level arrays of type-level integers. (PR #66)- [added] The types in this crate are now instantiable. (Issue #67, PR #68)### 1.3.1 (2016-03-31)- [fixed] Bug with recent nightlies.### 1.3.0 (2016-02-07)- [changed] Removed dependency on libstd. (Issue #53, PR #55)- [changed] Reorganized module structure. (PR #57)### 1.2.0 (2016-01-03)- [added] This change log!- [added] Convenience type aliases for operators. (Issue #48, PR #50)- [added] Types in this crate now derive all possible traits. (Issue #42, PR  #51)