macro_rules! constify_imm6 {
($imm8:expr, $expand:ident) => {
#[allow(overflowing_literals)]
match ($imm8) & 0b1_1111 {
0 => $expand!(0),
1 => $expand!(1),
2 => $expand!(2),
3 => $expand!(3),
4 => $expand!(4),
5 => $expand!(5),
6 => $expand!(6),
7 => $expand!(7),
8 => $expand!(8),
9 => $expand!(9),
10 => $expand!(10),
11 => $expand!(11),
12 => $expand!(12),
13 => $expand!(13),
14 => $expand!(14),
15 => $expand!(15),
16 => $expand!(16),
17 => $expand!(17),
18 => $expand!(18),
19 => $expand!(19),
20 => $expand!(20),
21 => $expand!(21),
22 => $expand!(22),
23 => $expand!(23),
24 => $expand!(24),
25 => $expand!(25),
26 => $expand!(26),
27 => $expand!(27),
28 => $expand!(28),
29 => $expand!(29),
30 => $expand!(30),
_ => $expand!(31),
}
};
}
macro_rules! constify_imm4 {
($imm8:expr, $expand:ident) => {
#[allow(overflowing_literals)]
match ($imm8) & 0b1111 {
0 => $expand!(0),
1 => $expand!(1),
2 => $expand!(2),
3 => $expand!(3),
4 => $expand!(4),
5 => $expand!(5),
6 => $expand!(6),
7 => $expand!(7),
8 => $expand!(8),
9 => $expand!(9),
10 => $expand!(10),
11 => $expand!(11),
12 => $expand!(12),
13 => $expand!(13),
14 => $expand!(14),
_ => $expand!(15),
}
};
}
macro_rules! constify_imm3 {
($imm8:expr, $expand:ident) => {
#[allow(overflowing_literals)]
match ($imm8) & 0b111 {
0 => $expand!(0),
1 => $expand!(1),
2 => $expand!(2),
3 => $expand!(3),
4 => $expand!(4),
5 => $expand!(5),
6 => $expand!(6),
_ => $expand!(7),
}
};
}
macro_rules! constify_imm2 {
($imm8:expr, $expand:ident) => {
#[allow(overflowing_literals)]
match ($imm8) & 0b11 {
0 => $expand!(0),
1 => $expand!(1),
2 => $expand!(2),
_ => $expand!(3),
}
};
}
#[cfg(test)]
macro_rules! assert_approx_eq {
($a:expr, $b:expr, $eps:expr) => {{
let (a, b) = (&$a, &$b);
assert!(
(*a - *b).abs() < $eps,
"assertion failed: `(left !== right)` \
(left: `{:?}`, right: `{:?}`, expect diff: `{:?}`, real diff: `{:?}`)",
*a,
*b,
$eps,
(*a - *b).abs()
);
}};
}