strafe-project/lib/linear_ops/src/tests/fixed_wide.rs

use crate::types::{Matrix3,Matrix3x2,Matrix3x4,Matrix4x2,Vector3};

type Planar64=fixed_wide::types::I32F32;
type Planar64Wide1=fixed_wide::types::I64F64;
//type Planar64Wide2=fixed_wide::types::I128F128;
type Planar64Wide3=fixed_wide::types::I256F256;

#[test]
fn wide_vec3(){
	let v=Vector3::from_value(Planar64::from(3));
	let v1=v*v.x;
	let v2=v1*v1.y;
	let v3=v2*v2.z;

	assert_eq!(v3.array,Vector3::from_value(Planar64Wide3::from(3i128.pow(8))).array);
}

#[test]
fn wide_vec3_dot(){
	let v=Vector3::from_value(Planar64::from(3));
	let v1=v*v.x;
	let v2=v1*v1.y;
	let v3=v2.dot(v2);

	assert_eq!(v3,Planar64Wide3::from(3i128.pow(8)*3));
}

#[test]
fn wide_vec3_length_squared(){
	let v=Vector3::from_value(Planar64::from(3));
	let v1=v*v.x;
	let v2=v1*v1.y;
	let v3=v2.length_squared();

	assert_eq!(v3,Planar64Wide3::from(3i128.pow(8)*3));
}

#[test]
fn wide_matrix_dot(){
	let lhs=Matrix3x4::new([
		[Planar64::from(1),Planar64::from(2),Planar64::from(3),Planar64::from(4)],
		[Planar64::from(5),Planar64::from(6),Planar64::from(7),Planar64::from(8)],
		[Planar64::from(9),Planar64::from(10),Planar64::from(11),Planar64::from(12)],
	]).transpose();
	let rhs=Matrix4x2::new([
		[Planar64::from(1),Planar64::from(2)],
		[Planar64::from(3),Planar64::from(4)],
		[Planar64::from(5),Planar64::from(6)],
		[Planar64::from(7),Planar64::from(8)],
	]).transpose();
	// Mat3<Vec4>.dot(Mat4<Vec2>) -> Mat3<Vec2>
	let m_dot=lhs*rhs;
	//In[1]:= {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}} . {{1, 2}, {3, 4}, {5, 6}, {7, 8}}
	//Out[1]= {{50, 60}, {114, 140}, {178, 220}}
	assert_eq!(
		m_dot.array,
		Matrix3x2::new([
			[Planar64Wide1::from(50),Planar64Wide1::from(60)],
			[Planar64Wide1::from(114),Planar64Wide1::from(140)],
			[Planar64Wide1::from(178),Planar64Wide1::from(220)],
		]).transpose().array
	);
}

#[test]
#[cfg(feature="named-fields")]
fn wide_matrix_det(){
	let m=Matrix3::new([
		[Planar64::from(1),Planar64::from(2),Planar64::from(3)],
		[Planar64::from(4),Planar64::from(5),Planar64::from(7)],
		[Planar64::from(6),Planar64::from(8),Planar64::from(9)],
	]);
	// In[2]:= Det[{{1, 2, 3}, {4, 5, 7}, {6, 8, 9}}]
	// Out[2]= 7
	assert_eq!(m.det(),fixed_wide::fixed::Fixed::<3,96>::from(7));
}

#[test]
#[cfg(feature="named-fields")]
fn wide_matrix_adjugate(){
	let m=Matrix3::new([
		[Planar64::from(1),Planar64::from(2),Planar64::from(3)],
		[Planar64::from(4),Planar64::from(5),Planar64::from(7)],
		[Planar64::from(6),Planar64::from(8),Planar64::from(9)],
	]);
	// In[6]:= Adjugate[{{1, 2, 3}, {4, 5, 7}, {6, 8, 9}}]
	// Out[6]= {{-11, 6, -1}, {6, -9, 5}, {2, 4, -3}}
	assert_eq!(
		m.adjugate().array,
		Matrix3::new([
			[Planar64Wide1::from(-11),Planar64Wide1::from(6),Planar64Wide1::from(-1)],
			[Planar64Wide1::from(6),Planar64Wide1::from(-9),Planar64Wide1::from(5)],
			[Planar64Wide1::from(2),Planar64Wide1::from(4),Planar64Wide1::from(-3)],
		]).array
	);
}