diff options
Diffstat (limited to 'third_party/rust/packed_simd/src/api/math/float/rsqrte.rs')
| -rw-r--r-- | third_party/rust/packed_simd/src/api/math/float/rsqrte.rs | 40 |
1 files changed, 0 insertions, 40 deletions
diff --git a/third_party/rust/packed_simd/src/api/math/float/rsqrte.rs b/third_party/rust/packed_simd/src/api/math/float/rsqrte.rs deleted file mode 100644 index c77977f7b1..0000000000 --- a/third_party/rust/packed_simd/src/api/math/float/rsqrte.rs +++ /dev/null @@ -1,40 +0,0 @@ -//! Implements vertical (lane-wise) floating-point `rsqrte`. - -macro_rules! impl_math_float_rsqrte { - ([$elem_ty:ident; $elem_count:expr]: $id:ident | $test_tt:tt) => { - impl $id { - /// Reciprocal square-root estimate: `~= 1. / self.sqrt()`. - /// - /// FIXME: The precision of the estimate is currently unspecified. - #[inline] - pub fn rsqrte(self) -> Self { - unsafe { - use crate::llvm::simd_fsqrt; - $id::splat(1.) / Simd(simd_fsqrt(self.0)) - } - } - } - - test_if!{ - $test_tt: - paste::item! { - pub mod [<$id _math_rsqrte>] { - use super::*; - #[cfg_attr(not(target_arch = "wasm32"), test)] #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)] - fn rsqrte() { - use crate::$elem_ty::consts::SQRT_2; - let tol = $id::splat(2.4e-4 as $elem_ty); - let o = $id::splat(1 as $elem_ty); - let error = (o - o.rsqrte()).abs(); - assert!(error.le(tol).all()); - - let t = $id::splat(2 as $elem_ty); - let e = 1. / SQRT_2; - let error = (e - t.rsqrte()).abs(); - assert!(error.le(tol).all()); - } - } - } - } - }; -} |