crates/glam/src/lib.rs - platform/external/rust/android-crates-io - Git at Google

 /*!
 # glam

 `glam` is a simple and fast linear algebra library for games and graphics.

 ## Features

 * [`f32`](mod@f32) types
   * vectors: [`Vec2`], [`Vec3`], [`Vec3A`] and [`Vec4`]
   * square matrices: [`Mat2`], [`Mat3`], [`Mat3A`] and [`Mat4`]
   * a quaternion type: [`Quat`]
   * affine transformation types: [`Affine2`] and [`Affine3A`]
 * [`f64`](mod@f64) types
   * vectors: [`DVec2`], [`DVec3`] and [`DVec4`]
   * square matrices: [`DMat2`], [`DMat3`] and [`DMat4`]
   * a quaternion type: [`DQuat`]
   * affine transformation types: [`DAffine2`] and [`DAffine3`]
 * [`i8`](mod@i8) types
   * vectors: [`I8Vec2`], [`I8Vec3`] and [`I8Vec4`]
 * [`u8`](mod@u8) types
   * vectors: [`U8Vec2`], [`U8Vec3`] and [`U8Vec4`]
 * [`i16`](mod@i16) types
   * vectors: [`I16Vec2`], [`I16Vec3`] and [`I16Vec4`]
 * [`u16`](mod@u16) types
   * vectors: [`U16Vec2`], [`U16Vec3`] and [`U16Vec4`]
 * [`i32`](mod@i32) types
   * vectors: [`IVec2`], [`IVec3`] and [`IVec4`]
 * [`u32`](mod@u32) types
   * vectors: [`UVec2`], [`UVec3`] and [`UVec4`]
 * [`i64`](mod@i64) types
   * vectors: [`I64Vec2`], [`I64Vec3`] and [`I64Vec4`]
 * [`u64`](mod@u64) types
   * vectors: [`U64Vec2`], [`U64Vec3`] and [`U64Vec4`]
 * [`bool`](mod@bool) types
   * vectors: [`BVec2`], [`BVec3`] and [`BVec4`]

 ## SIMD

 `glam` is built with SIMD in mind. Many `f32` types use 128-bit SIMD vector types for storage
 and/or implementation. The use of SIMD generally enables better performance than using primitive
 numeric types such as `f32`.

 Some `glam` types use SIMD for storage meaning they are 16 byte aligned, these types include
 `Mat2`, `Mat3A`, `Mat4`, `Quat`, `Vec3A`, `Vec4`, `Affine2` an `Affine3A`. Types
 with an `A` suffix are a SIMD alternative to a scalar type, e.g. `Vec3` uses `f32` storage and
 `Vec3A` uses SIMD storage.

 When SIMD is not available on the target the types will maintain 16 byte alignment and internal
 padding so that object sizes and layouts will not change between architectures. There are scalar
 math fallback implementations exist when SIMD is not available. It is intended to add support for
 other SIMD architectures once they appear in stable Rust.

 Currently only SSE2 on x86/x86_64, NEON on Aarch64, and simd128 on WASM are supported.

 ## Vec3A and Mat3A

 `Vec3A` is a SIMD optimized version of the `Vec3` type, which due to 16 byte alignment results
 in `Vec3A` containing 4 bytes of padding making it 16 bytes in size in total. `Mat3A` is composed
 of three `Vec3A` columns.

 | Type       | `f32` bytes | Align bytes | Size bytes | Padding |
 |:-----------|------------:|------------:|-----------:|--------:|
 |[`Vec3`]    |           12|            4|          12|        0|
 |[`Vec3A`]   |           12|           16|          16|        4|
 |[`Mat3`]    |           36|            4|          36|        0|
 |[`Mat3A`]   |           36|           16|          48|       12|

 Despite this wasted space the SIMD implementations tend to outperform `f32` implementations in
 [**mathbench**](https://github.com/bitshifter/mathbench-rs) benchmarks.

 `glam` treats [`Vec3`] as the default 3D vector type and [`Vec3A`] a special case for optimization.
 When methods need to return a 3D vector they will generally return [`Vec3`].

 There are [`From`] trait implementations for converting from [`Vec4`] to a [`Vec3A`] and between
 [`Vec3`] and [`Vec3A`] (and vice versa).

 ```
 use glam::{Vec3, Vec3A, Vec4};

 let v4 = Vec4::new(1.0, 2.0, 3.0, 4.0);

 // Convert from `Vec4` to `Vec3A`, this is a no-op if SIMD is supported.
 // We use an explicit method here instead of a From impl as data is lost in the conversion.
 let v3a = Vec3A::from_vec4(v4);
 assert_eq!(Vec3A::new(1.0, 2.0, 3.0), v3a);

 // Convert from `Vec3A` to `Vec3`.
 let v3 = Vec3::from(v3a);
 assert_eq!(Vec3::new(1.0, 2.0, 3.0), v3);

 // Convert from `Vec3` to `Vec3A`.
 let v3a = Vec3A::from(v3);
 assert_eq!(Vec3A::new(1.0, 2.0, 3.0), v3a);
 ```

 ## Affine2 and Affine3A

 `Affine2` and `Affine3A` are composed of a linear transform matrix and a vector translation. The
 represent 2D and 3D affine transformations which are commonly used in games.

 The table below shows the performance advantage of `Affine2` over `Mat3A` and `Mat3A` over `Mat3`.

 | operation          | `Mat3`      | `Mat3A`    | `Affine2`  |
 |--------------------|-------------|------------|------------|
 | inverse            | 11.4±0.09ns | 7.1±0.09ns | 5.4±0.06ns |
 | mul self           | 10.5±0.04ns | 5.2±0.05ns | 4.0±0.05ns |
 | transform point2   |  2.7±0.02ns | 2.7±0.03ns | 2.8±0.04ns |
 | transform vector2  |  2.6±0.01ns | 2.6±0.03ns | 2.3±0.02ns |

 Performance is much closer between `Mat4` and `Affine3A` with the affine type being faster to
 invert.

 | operation          | `Mat4`      | `Affine3A`  |
 |--------------------|-------------|-------------|
 | inverse            | 15.9±0.11ns | 10.8±0.06ns |
 | mul self           |  7.3±0.05ns |  7.0±0.06ns |
 | transform point3   |  3.6±0.02ns |  4.3±0.04ns |
 | transform point3a  |  3.0±0.02ns |  3.0±0.04ns |
 | transform vector3  |  4.1±0.02ns |  3.9±0.04ns |
 | transform vector3a |  2.8±0.02ns |  2.8±0.02ns |

 Benchmarks were taken on an Intel Core i7-4710HQ.

 ## Linear algebra conventions

 `glam` interprets vectors as column matrices (also known as column vectors) meaning when
 transforming a vector with a matrix the matrix goes on the left.

 ```
 use glam::{Mat3, Vec3};
 let m = Mat3::IDENTITY;
 let x = Vec3::X;
 let v = m * x;
 assert_eq!(v, x);
 ```

 Matrices are stored in memory in column-major order.

 All angles are in radians. Rust provides the `f32::to_radians()` and `f64::to_radians()` methods to
 convert from degrees.

 ## Direct element access

 Because some types may internally be implemented using SIMD types, direct access to vector elements
 is supported by implementing the [`Deref`] and [`DerefMut`] traits.

 ```
 use glam::Vec3A;
 let mut v = Vec3A::new(1.0, 2.0, 3.0);
 assert_eq!(3.0, v.z);
 v.z += 1.0;
 assert_eq!(4.0, v.z);
 ```

 [`Deref`]: https://doc.rust-lang.org/std/ops/trait.Deref.html
 [`DerefMut`]: https://doc.rust-lang.org/std/ops/trait.DerefMut.html

 ## glam assertions

 `glam` does not enforce validity checks on method parameters at runtime. For example methods that
 require normalized vectors as input such as `Quat::from_axis_angle(axis, angle)` will not check
 that axis is a valid normalized vector. To help catch unintended misuse of `glam` the
 `debug-glam-assert` or `glam-assert` features can be enabled to add checks ensure that inputs to
 are valid.

 ## Vector swizzles

 `glam` vector types have functions allowing elements of vectors to be reordered, this includes
 creating a vector of a different size from the vectors elements.

 The swizzle functions are implemented using traits to add them to each vector type. This is
 primarily because there are a lot of swizzle functions which can obfuscate the other vector
 functions in documentation and so on. The traits are [`Vec2Swizzles`], [`Vec3Swizzles`] and
 [`Vec4Swizzles`].

 Note that the [`Vec3Swizzles`] implementation for [`Vec3A`] will return a [`Vec3A`] for 3 element
 swizzles, all other implementations will return [`Vec3`].

 ```
 use glam::{swizzles::*, Vec2, Vec3, Vec3A, Vec4};

 let v = Vec4::new(1.0, 2.0, 3.0, 4.0);

 // Reverse elements of `v`, if SIMD is supported this will use a vector shuffle.
 let wzyx = v.wzyx();
 assert_eq!(Vec4::new(4.0, 3.0, 2.0, 1.0), wzyx);

 // Swizzle the yzw elements of `v` into a `Vec3`
 let yzw = v.yzw();
 assert_eq!(Vec3::new(2.0, 3.0, 4.0), yzw);

 // To swizzle a `Vec4` into a `Vec3A` swizzle the `Vec4` first then convert to
 // `Vec3A`. If SIMD is supported this will use a vector shuffle. The last
 // element of the shuffled `Vec4` is ignored by the `Vec3A`.
 let yzw = Vec3A::from_vec4(v.yzwx());
 assert_eq!(Vec3A::new(2.0, 3.0, 4.0), yzw);

 // You can swizzle from a `Vec4` to a `Vec2`
 let xy = v.xy();
 assert_eq!(Vec2::new(1.0, 2.0), xy);

 // And back again
 let yyxx = xy.yyxx();
 assert_eq!(Vec4::new(2.0, 2.0, 1.0, 1.0), yyxx);
 ```

 ## SIMD and scalar consistency

 `glam` types implement `serde` `Serialize` and `Deserialize` traits to ensure
 that they will serialize and deserialize exactly the same whether or not
 SIMD support is being used.

 The SIMD versions implement the `core::fmt::Debug` and `core::fmt::Display`
 traits so they print the same as the scalar version.

 ```
 use glam::Vec4;
 let a = Vec4::new(1.0, 2.0, 3.0, 4.0);
 assert_eq!(format!("{}", a), "[1, 2, 3, 4]");
 ```

 ## Feature gates

 All `glam` dependencies are optional, however some are required for tests
 and benchmarks.

 * `std` - the default feature, has no dependencies.
 * `approx` - traits and macros for approximate float comparisons
 * `bytemuck` - for casting into slices of bytes
 * `libm` - uses `libm` math functions instead of `std`, required to compile with `no_std`
 * `mint` - for interoperating with other 3D math libraries
 * `rand` - implementations of `Distribution` trait for all `glam` types.
 * `rkyv` - implementations of `Archive`, `Serialize` and `Deserialize` for all
   `glam` types. Note that serialization is not interoperable with and without the
   `scalar-math` feature. It should work between all other builds of `glam`.
   Endian conversion is currently not supported
 * `bytecheck` - to perform archive validation when using the `rkyv` feature
 * `serde` - implementations of `Serialize` and `Deserialize` for all `glam`
   types. Note that serialization should work between builds of `glam` with and without SIMD enabled
 * `scalar-math` - disables SIMD support and uses native alignment for all types.
 * `debug-glam-assert` - adds assertions in debug builds which check the validity of parameters
   passed to `glam` to help catch runtime errors.
 * `glam-assert` - adds assertions to all builds which check the validity of parameters passed to
   `glam` to help catch runtime errors.
 * `cuda` - forces `glam` types to match expected cuda alignment
 * `fast-math` - By default, glam attempts to provide bit-for-bit identical
   results on all platforms. Using this feature will enable platform specific
   optimizations that may not be identical to other platforms. **Intermediate
   libraries should not use this feature and defer the decision to the final
   binary build**.
 * `core-simd` - enables SIMD support via the portable simd module. This is an
   unstable feature which requires a nightly Rust toolchain and `std` support.

 ## Minimum Supported Rust Version (MSRV)

 The minimum supported Rust version is `1.68.2`.

 */
 #![doc(html_root_url = "https://docs.rs/glam/0.29.2")]
 #![cfg_attr(not(feature = "std"), no_std)]
 #![cfg_attr(target_arch = "spirv", feature(repr_simd))]
 #![deny(
     rust_2018_compatibility,
     rust_2018_idioms,
     future_incompatible,
     nonstandard_style
 )]
 // clippy doesn't like `to_array(&self)`
 #![allow(clippy::wrong_self_convention)]
 #![cfg_attr(
     all(feature = "core-simd", not(feature = "scalar-math")),
     feature(portable_simd)
 )]

 #[macro_use]
 mod macros;

 mod align16;
 mod deref;
 mod euler;
 mod features;

 #[cfg(all(
     target_arch = "aarch64",
     not(any(feature = "core-simd", feature = "scalar-math"))
 ))]
 mod neon;

 #[cfg(target_arch = "spirv")]
 mod spirv;

 #[cfg(all(
     target_feature = "sse2",
     not(any(feature = "core-simd", feature = "scalar-math"))
 ))]
 mod sse2;

 #[cfg(all(
     target_feature = "simd128",
     not(any(feature = "core-simd", feature = "scalar-math"))
 ))]
 mod wasm32;

 #[cfg(all(feature = "core-simd", not(feature = "scalar-math")))]
 mod coresimd;

 #[cfg(all(
     target_feature = "sse2",
     not(any(feature = "core-simd", feature = "scalar-math"))
 ))]
 use align16::Align16;

 /** `bool` vector mask types. */
 pub mod bool;
 pub use self::bool::*;

 /** `f32` vector, quaternion and matrix types. */
 pub mod f32;
 pub use self::f32::*;

 /** `f64` vector, quaternion and matrix types. */
 pub mod f64;
 pub use self::f64::*;

 /** `i8` vector types. */
 pub mod i8;
 pub use self::i8::*;

 /** `u8` vector types. */
 pub mod u8;
 pub use self::u8::*;

 /** `i16` vector types. */
 pub mod i16;
 pub use self::i16::*;

 /** `u16` vector types. */
 pub mod u16;
 pub use self::u16::*;

 /** `i32` vector types. */
 pub mod i32;
 pub use self::i32::*;

 /** `u32` vector types. */
 pub mod u32;
 pub use self::u32::*;

 /** `i64` vector types. */
 pub mod i64;
 pub use self::i64::*;

 /** `u64` vector types. */
 pub mod u64;
 pub use self::u64::*;

 /** Traits adding swizzle methods to all vector types. */
 pub mod swizzles;
 pub use self::swizzles::{Vec2Swizzles, Vec3Swizzles, Vec4Swizzles};

 /** Rotation Helper */
 pub use euler::EulerRot;

 /** A trait for extending [`prim@f32`] and [`prim@f64`] with extra methods. */
 mod float;
 pub use float::FloatExt;
	/*!
	# glam

	`glam` is a simple and fast linear algebra library for games and graphics.

	## Features

	* [`f32`](mod@f32) types
	* vectors: [`Vec2`], [`Vec3`], [`Vec3A`] and [`Vec4`]
	* square matrices: [`Mat2`], [`Mat3`], [`Mat3A`] and [`Mat4`]
	* a quaternion type: [`Quat`]
	* affine transformation types: [`Affine2`] and [`Affine3A`]
	* [`f64`](mod@f64) types
	* vectors: [`DVec2`], [`DVec3`] and [`DVec4`]
	* square matrices: [`DMat2`], [`DMat3`] and [`DMat4`]
	* a quaternion type: [`DQuat`]
	* affine transformation types: [`DAffine2`] and [`DAffine3`]
	* [`i8`](mod@i8) types
	* vectors: [`I8Vec2`], [`I8Vec3`] and [`I8Vec4`]
	* [`u8`](mod@u8) types
	* vectors: [`U8Vec2`], [`U8Vec3`] and [`U8Vec4`]
	* [`i16`](mod@i16) types
	* vectors: [`I16Vec2`], [`I16Vec3`] and [`I16Vec4`]
	* [`u16`](mod@u16) types
	* vectors: [`U16Vec2`], [`U16Vec3`] and [`U16Vec4`]
	* [`i32`](mod@i32) types
	* vectors: [`IVec2`], [`IVec3`] and [`IVec4`]
	* [`u32`](mod@u32) types
	* vectors: [`UVec2`], [`UVec3`] and [`UVec4`]
	* [`i64`](mod@i64) types
	* vectors: [`I64Vec2`], [`I64Vec3`] and [`I64Vec4`]
	* [`u64`](mod@u64) types
	* vectors: [`U64Vec2`], [`U64Vec3`] and [`U64Vec4`]
	* [`bool`](mod@bool) types
	* vectors: [`BVec2`], [`BVec3`] and [`BVec4`]

	## SIMD

	`glam` is built with SIMD in mind. Many `f32` types use 128-bit SIMD vector types for storage
	and/or implementation. The use of SIMD generally enables better performance than using primitive
	numeric types such as `f32`.

	Some `glam` types use SIMD for storage meaning they are 16 byte aligned, these types include
	`Mat2`, `Mat3A`, `Mat4`, `Quat`, `Vec3A`, `Vec4`, `Affine2` an `Affine3A`. Types
	with an `A` suffix are a SIMD alternative to a scalar type, e.g. `Vec3` uses `f32` storage and
	`Vec3A` uses SIMD storage.

	When SIMD is not available on the target the types will maintain 16 byte alignment and internal
	padding so that object sizes and layouts will not change between architectures. There are scalar
	math fallback implementations exist when SIMD is not available. It is intended to add support for
	other SIMD architectures once they appear in stable Rust.

	Currently only SSE2 on x86/x86_64, NEON on Aarch64, and simd128 on WASM are supported.

	## Vec3A and Mat3A

	`Vec3A` is a SIMD optimized version of the `Vec3` type, which due to 16 byte alignment results
	in `Vec3A` containing 4 bytes of padding making it 16 bytes in size in total. `Mat3A` is composed
	of three `Vec3A` columns.

	\| Type \| `f32` bytes \| Align bytes \| Size bytes \| Padding \|
	\|:-----------\|------------:\|------------:\|-----------:\|--------:\|
	\|[`Vec3`] \| 12\| 4\| 12\| 0\|
	\|[`Vec3A`] \| 12\| 16\| 16\| 4\|
	\|[`Mat3`] \| 36\| 4\| 36\| 0\|
	\|[`Mat3A`] \| 36\| 16\| 48\| 12\|

	Despite this wasted space the SIMD implementations tend to outperform `f32` implementations in
	[mathbench](https://github.com/bitshifter/mathbench-rs) benchmarks.

	`glam` treats [`Vec3`] as the default 3D vector type and [`Vec3A`] a special case for optimization.
	When methods need to return a 3D vector they will generally return [`Vec3`].

	There are [`From`] trait implementations for converting from [`Vec4`] to a [`Vec3A`] and between
	[`Vec3`] and [`Vec3A`] (and vice versa).

	```
	use glam::{Vec3, Vec3A, Vec4};

	let v4 = Vec4::new(1.0, 2.0, 3.0, 4.0);

	// Convert from `Vec4` to `Vec3A`, this is a no-op if SIMD is supported.
	// We use an explicit method here instead of a From impl as data is lost in the conversion.
	let v3a = Vec3A::from_vec4(v4);
	assert_eq!(Vec3A::new(1.0, 2.0, 3.0), v3a);

	// Convert from `Vec3A` to `Vec3`.
	let v3 = Vec3::from(v3a);
	assert_eq!(Vec3::new(1.0, 2.0, 3.0), v3);

	// Convert from `Vec3` to `Vec3A`.
	let v3a = Vec3A::from(v3);
	assert_eq!(Vec3A::new(1.0, 2.0, 3.0), v3a);
	```

	## Affine2 and Affine3A

	`Affine2` and `Affine3A` are composed of a linear transform matrix and a vector translation. The
	represent 2D and 3D affine transformations which are commonly used in games.

	The table below shows the performance advantage of `Affine2` over `Mat3A` and `Mat3A` over `Mat3`.

	\| operation \| `Mat3` \| `Mat3A` \| `Affine2` \|
	\|--------------------\|-------------\|------------\|------------\|
	\| inverse \| 11.4±0.09ns \| 7.1±0.09ns \| 5.4±0.06ns \|
	\| mul self \| 10.5±0.04ns \| 5.2±0.05ns \| 4.0±0.05ns \|
	\| transform point2 \| 2.7±0.02ns \| 2.7±0.03ns \| 2.8±0.04ns \|
	\| transform vector2 \| 2.6±0.01ns \| 2.6±0.03ns \| 2.3±0.02ns \|

	Performance is much closer between `Mat4` and `Affine3A` with the affine type being faster to
	invert.

	\| operation \| `Mat4` \| `Affine3A` \|
	\|--------------------\|-------------\|-------------\|
	\| inverse \| 15.9±0.11ns \| 10.8±0.06ns \|
	\| mul self \| 7.3±0.05ns \| 7.0±0.06ns \|
	\| transform point3 \| 3.6±0.02ns \| 4.3±0.04ns \|
	\| transform point3a \| 3.0±0.02ns \| 3.0±0.04ns \|
	\| transform vector3 \| 4.1±0.02ns \| 3.9±0.04ns \|
	\| transform vector3a \| 2.8±0.02ns \| 2.8±0.02ns \|

	Benchmarks were taken on an Intel Core i7-4710HQ.

	## Linear algebra conventions

	`glam` interprets vectors as column matrices (also known as column vectors) meaning when
	transforming a vector with a matrix the matrix goes on the left.

	```
	use glam::{Mat3, Vec3};
	let m = Mat3::IDENTITY;
	let x = Vec3::X;
	let v = m * x;
	assert_eq!(v, x);
	```

	Matrices are stored in memory in column-major order.

	All angles are in radians. Rust provides the `f32::to_radians()` and `f64::to_radians()` methods to
	convert from degrees.

	## Direct element access

	Because some types may internally be implemented using SIMD types, direct access to vector elements
	is supported by implementing the [`Deref`] and [`DerefMut`] traits.

	```
	use glam::Vec3A;
	let mut v = Vec3A::new(1.0, 2.0, 3.0);
	assert_eq!(3.0, v.z);
	v.z += 1.0;
	assert_eq!(4.0, v.z);
	```

	[`Deref`]: https://doc.rust-lang.org/std/ops/trait.Deref.html
	[`DerefMut`]: https://doc.rust-lang.org/std/ops/trait.DerefMut.html

	## glam assertions

	`glam` does not enforce validity checks on method parameters at runtime. For example methods that
	require normalized vectors as input such as `Quat::from_axis_angle(axis, angle)` will not check
	that axis is a valid normalized vector. To help catch unintended misuse of `glam` the
	`debug-glam-assert` or `glam-assert` features can be enabled to add checks ensure that inputs to
	are valid.

	## Vector swizzles

	`glam` vector types have functions allowing elements of vectors to be reordered, this includes
	creating a vector of a different size from the vectors elements.

	The swizzle functions are implemented using traits to add them to each vector type. This is
	primarily because there are a lot of swizzle functions which can obfuscate the other vector
	functions in documentation and so on. The traits are [`Vec2Swizzles`], [`Vec3Swizzles`] and
	[`Vec4Swizzles`].

	Note that the [`Vec3Swizzles`] implementation for [`Vec3A`] will return a [`Vec3A`] for 3 element
	swizzles, all other implementations will return [`Vec3`].

	```
	use glam::{swizzles::*, Vec2, Vec3, Vec3A, Vec4};

	let v = Vec4::new(1.0, 2.0, 3.0, 4.0);

	// Reverse elements of `v`, if SIMD is supported this will use a vector shuffle.
	let wzyx = v.wzyx();
	assert_eq!(Vec4::new(4.0, 3.0, 2.0, 1.0), wzyx);

	// Swizzle the yzw elements of `v` into a `Vec3`
	let yzw = v.yzw();
	assert_eq!(Vec3::new(2.0, 3.0, 4.0), yzw);

	// To swizzle a `Vec4` into a `Vec3A` swizzle the `Vec4` first then convert to
	// `Vec3A`. If SIMD is supported this will use a vector shuffle. The last
	// element of the shuffled `Vec4` is ignored by the `Vec3A`.
	let yzw = Vec3A::from_vec4(v.yzwx());
	assert_eq!(Vec3A::new(2.0, 3.0, 4.0), yzw);

	// You can swizzle from a `Vec4` to a `Vec2`
	let xy = v.xy();
	assert_eq!(Vec2::new(1.0, 2.0), xy);

	// And back again
	let yyxx = xy.yyxx();
	assert_eq!(Vec4::new(2.0, 2.0, 1.0, 1.0), yyxx);
	```

	## SIMD and scalar consistency

	`glam` types implement `serde` `Serialize` and `Deserialize` traits to ensure
	that they will serialize and deserialize exactly the same whether or not
	SIMD support is being used.

	The SIMD versions implement the `core::fmt::Debug` and `core::fmt::Display`
	traits so they print the same as the scalar version.

	```
	use glam::Vec4;
	let a = Vec4::new(1.0, 2.0, 3.0, 4.0);
	assert_eq!(format!("{}", a), "[1, 2, 3, 4]");
	```

	## Feature gates

	All `glam` dependencies are optional, however some are required for tests
	and benchmarks.

	* `std` - the default feature, has no dependencies.
	* `approx` - traits and macros for approximate float comparisons
	* `bytemuck` - for casting into slices of bytes
	* `libm` - uses `libm` math functions instead of `std`, required to compile with `no_std`
	* `mint` - for interoperating with other 3D math libraries
	* `rand` - implementations of `Distribution` trait for all `glam` types.
	* `rkyv` - implementations of `Archive`, `Serialize` and `Deserialize` for all
	`glam` types. Note that serialization is not interoperable with and without the
	`scalar-math` feature. It should work between all other builds of `glam`.
	Endian conversion is currently not supported
	* `bytecheck` - to perform archive validation when using the `rkyv` feature
	* `serde` - implementations of `Serialize` and `Deserialize` for all `glam`
	types. Note that serialization should work between builds of `glam` with and without SIMD enabled
	* `scalar-math` - disables SIMD support and uses native alignment for all types.
	* `debug-glam-assert` - adds assertions in debug builds which check the validity of parameters
	passed to `glam` to help catch runtime errors.
	* `glam-assert` - adds assertions to all builds which check the validity of parameters passed to
	`glam` to help catch runtime errors.
	* `cuda` - forces `glam` types to match expected cuda alignment
	* `fast-math` - By default, glam attempts to provide bit-for-bit identical
	results on all platforms. Using this feature will enable platform specific
	optimizations that may not be identical to other platforms. **Intermediate
	libraries should not use this feature and defer the decision to the final
	binary build**.
	* `core-simd` - enables SIMD support via the portable simd module. This is an
	unstable feature which requires a nightly Rust toolchain and `std` support.

	## Minimum Supported Rust Version (MSRV)

	The minimum supported Rust version is `1.68.2`.

	*/
	#![doc(html_root_url = "https://docs.rs/glam/0.29.2")]
	#![cfg_attr(not(feature = "std"), no_std)]
	#![cfg_attr(target_arch = "spirv", feature(repr_simd))]
	#![deny(
	rust_2018_compatibility,
	rust_2018_idioms,
	future_incompatible,
	nonstandard_style
	)]
	// clippy doesn't like `to_array(&self)`
	#![allow(clippy::wrong_self_convention)]
	#![cfg_attr(
	all(feature = "core-simd", not(feature = "scalar-math")),
	feature(portable_simd)
	)]

	#[macro_use]
	mod macros;

	mod align16;
	mod deref;
	mod euler;
	mod features;

	#[cfg(all(
	target_arch = "aarch64",
	not(any(feature = "core-simd", feature = "scalar-math"))
	))]
	mod neon;

	#[cfg(target_arch = "spirv")]
	mod spirv;

	#[cfg(all(
	target_feature = "sse2",
	not(any(feature = "core-simd", feature = "scalar-math"))
	))]
	mod sse2;

	#[cfg(all(
	target_feature = "simd128",
	not(any(feature = "core-simd", feature = "scalar-math"))
	))]
	mod wasm32;

	#[cfg(all(feature = "core-simd", not(feature = "scalar-math")))]
	mod coresimd;

	#[cfg(all(
	target_feature = "sse2",
	not(any(feature = "core-simd", feature = "scalar-math"))
	))]
	use align16::Align16;

	/** `bool` vector mask types. */
	pub mod bool;
	pub use self::bool::*;

	/** `f32` vector, quaternion and matrix types. */
	pub mod f32;
	pub use self::f32::*;

	/** `f64` vector, quaternion and matrix types. */
	pub mod f64;
	pub use self::f64::*;

	/** `i8` vector types. */
	pub mod i8;
	pub use self::i8::*;

	/** `u8` vector types. */
	pub mod u8;
	pub use self::u8::*;

	/** `i16` vector types. */
	pub mod i16;
	pub use self::i16::*;

	/** `u16` vector types. */
	pub mod u16;
	pub use self::u16::*;

	/** `i32` vector types. */
	pub mod i32;
	pub use self::i32::*;

	/** `u32` vector types. */
	pub mod u32;
	pub use self::u32::*;

	/** `i64` vector types. */
	pub mod i64;
	pub use self::i64::*;

	/** `u64` vector types. */
	pub mod u64;
	pub use self::u64::*;

	/** Traits adding swizzle methods to all vector types. */
	pub mod swizzles;
	pub use self::swizzles::{Vec2Swizzles, Vec3Swizzles, Vec4Swizzles};

	/** Rotation Helper */
	pub use euler::EulerRot;

	/** A trait for extending [`prim@f32`] and [`prim@f64`] with extra methods. */
	mod float;
	pub use float::FloatExt;