Macro const_linear::matrix

macro_rules! matrix {
    ($t:ty; $n:expr) => { ... };
    ($val:expr; $rows:expr, $cols:expr) => { ... };
    ($($($elem:expr),+);+$(;)?) => { ... };
}

Constructs a matrix from a type, a value, or a series of values.

Examples

Identity matrix

An invocation in the form matrix![T; N] creates an N x N identity matrix of type T.

use const_linear::matrix;

let expected = [1, 0, 0, 0, 1, 0, 0, 0, 1];
let m = matrix![i32; 3];

for (x, y) in m.column_iter().zip(expected.iter()) {
    assert_eq!(x, y);
}

Matrix from value

An invocation in the form matrix![x; M, N] creates an M x N matrix filled with the value x.

use const_linear::matrix;

let expected = [1; 16];

let m = matrix![1; 4, 4];

for (x, y) in m.column_iter().zip(expected.iter()) {
    assert_eq!(x, y);
}

Matrix from columns

An invocation in the form

matrix![
    a, b, c, d, ...;
    e, f, g, h, ...;
    ...
]

creates a matrix which has columns [a, b, c, d, ...], [e, f, g, h...], ... A semicolon indicates the end of a column.

use const_linear::matrix;

let m = matrix![
    1, 2, 3;
    4, 5, 6;
    7, 8, 9;
];

assert_eq!(m.det(), 0.0);