| //! Implements vertical (lane-wise) floating-point `sqrte`. |
| |
| macro_rules! impl_math_float_sqrte { |
| ([$elem_ty:ident; $elem_count:expr]: $id:ident | $test_tt:tt) => { |
| impl $id { |
| /// Square-root estimate. |
| /// |
| /// FIXME: The precision of the estimate is currently unspecified. |
| #[inline] |
| pub fn sqrte(self) -> Self { |
| use crate::codegen::math::float::sqrte::Sqrte; |
| Sqrte::sqrte(self) |
| } |
| } |
| |
| test_if!{ |
| $test_tt: |
| paste::item! { |
| pub mod [<$id _math_sqrte>] { |
| use super::*; |
| #[cfg_attr(not(target_arch = "wasm32"), test)] #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)] |
| fn sqrte() { |
| use crate::$elem_ty::consts::SQRT_2; |
| let tol = $id::splat(2.4e-4 as $elem_ty); |
| |
| let z = $id::splat(0 as $elem_ty); |
| let error = (z - z.sqrte()).abs(); |
| assert!(error.le(tol).all()); |
| |
| let o = $id::splat(1 as $elem_ty); |
| let error = (o - o.sqrte()).abs(); |
| assert!(error.le(tol).all()); |
| |
| let t = $id::splat(2 as $elem_ty); |
| let e = $id::splat(SQRT_2 as $elem_ty); |
| let error = (e - t.sqrte()).abs(); |
| |
| assert!(error.le(tol).all()); |
| } |
| } |
| } |
| } |
| }; |
| } |