1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
pub trait Tensor {
const SIZE: usize;
const NDIM: usize;
fn dims(&self) -> Vec<usize>;
}
pub trait Matrix {
const ROWS: usize;
const COLS: usize;
}
pub trait Vector {
const COLS: usize;
}
pub trait RowVector {
const ROWS: usize;
}
pub enum TensorError {
WrongSize,
}
#[macro_export]
macro_rules! make_tensor {
($name:ident $($dim:literal) * ) => {
#[derive(Debug,Default)]
pub struct $name<T> (
[T; 1 $( * $dim )*]
);
impl<T> Tensor for $name<T> {
const SIZE: usize = 1 $( * $dim )*;
const NDIM: usize = 0 $( + $dim/$dim )*;
fn dims(&self) -> Vec<usize> {
vec!($($dim),*)
}
}
};
}
#[macro_export]
macro_rules! tensor {
($name:ident $dim:literal) => {
make_tensor!($name $dim);
impl<T> Vector for $name<T> {
const COLS = $dim;
}
};
($name:ident row $dim:literal) => {
make_tensor!($name $dim);
impl<T> RowVector for $name<T> {
const ROWS = $dim;
}
};
($name:ident $dim1:literal $dim2:literal) => {
make_tensor!($name $dim1 $dim2);
impl<T> Matrix for $name<T> {
const ROWS = $dim1;
const COLS = $dim2;
}
};
($name:ident $($dim:literal) * ) => (
make_tensor!($name $($dim) *);
)
}