| //! Utility macros. |
| |
| // Helper macro used to trigger const eval errors when the const generic immediate value `imm` is |
| // not a round number. |
| #[allow(unused)] |
| macro_rules! static_assert_rounding { |
| ($imm:ident) => { |
| static_assert!( |
| $imm == 4 || $imm == 8 || $imm == 9 || $imm == 10 || $imm == 11, |
| "Invalid IMM value" |
| ) |
| }; |
| } |
| |
| // Helper macro used to trigger const eval errors when the const generic immediate value `imm` is |
| // not a sae number. |
| #[allow(unused)] |
| macro_rules! static_assert_sae { |
| ($imm:ident) => { |
| static_assert!($imm == 4 || $imm == 8, "Invalid IMM value") |
| }; |
| } |
| |
| // Helper macro used to trigger const eval errors when the const generic immediate value `imm` is |
| // not a mantissas sae number. |
| #[allow(unused)] |
| macro_rules! static_assert_mantissas_sae { |
| ($imm:ident) => { |
| static_assert!($imm == 4 || $imm == 8 || $imm == 12, "Invalid IMM value") |
| }; |
| } |
| |
| // Helper macro used to trigger const eval errors when the const generic immediate value `SCALE` is |
| // not valid for gather instructions: the only valid scale values are 1, 2, 4 and 8. |
| #[allow(unused)] |
| macro_rules! static_assert_imm8_scale { |
| ($imm:ident) => { |
| static_assert!( |
| $imm == 1 || $imm == 2 || $imm == 4 || $imm == 8, |
| "Invalid SCALE value" |
| ) |
| }; |
| } |
| |
| #[cfg(test)] |
| macro_rules! assert_approx_eq { |
| ($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() |
| ); |
| }}; |
| } |