vendor/packed_simd/src/api/reductions/mask.rs

//! Implements portable horizontal mask reductions.

macro_rules! impl_reduction_mask {
    ([$elem_ty:ident; $elem_count:expr]: $id:ident | $test_tt:tt) => {
        impl $id {
            /// Are `all` vector lanes `true`?
            #[inline]
            pub fn all(self) -> bool {
                unsafe { crate::codegen::reductions::mask::All::all(self) }
            }
            /// Is `any` vector lane `true`?
            #[inline]
            pub fn any(self) -> bool {
                unsafe { crate::codegen::reductions::mask::Any::any(self) }
            }
            /// Are `all` vector lanes `false`?
            #[inline]
            pub fn none(self) -> bool {
                !self.any()
            }
        }

        test_if!{
            $test_tt:
            paste::item! {
                pub mod [<$id _reduction>] {
                    use super::*;
                    #[cfg_attr(not(target_arch = "wasm32"), test)] #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
                    fn all() {
                        let a = $id::splat(true);
                        assert!(a.all());
                        let a = $id::splat(false);
                        assert!(!a.all());

                        if $id::lanes() > 1 {
                            for i in 0..$id::lanes() {
                                let mut a = $id::splat(true);
                                a = a.replace(i, false);
                                assert!(!a.all());
                                let mut a = $id::splat(false);
                                a = a.replace(i, true);
                                assert!(!a.all());
                            }
                        }
                    }
                    #[cfg_attr(not(target_arch = "wasm32"), test)] #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
                    fn any() {
                        let a = $id::splat(true);
                        assert!(a.any());
                        let a = $id::splat(false);
                        assert!(!a.any());

                        if $id::lanes() > 1 {
                            for i in 0..$id::lanes() {
                                let mut a = $id::splat(true);
                                a = a.replace(i, false);
                                assert!(a.any());
                                let mut a = $id::splat(false);
                                a = a.replace(i, true);
                                assert!(a.any());
                            }
                        }
                    }
                    #[cfg_attr(not(target_arch = "wasm32"), test)] #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
                    fn none() {
                        let a = $id::splat(true);
                        assert!(!a.none());
                        let a = $id::splat(false);
                        assert!(a.none());

                        if $id::lanes() > 1 {
                            for i in 0..$id::lanes() {
                                let mut a = $id::splat(true);
                                a = a.replace(i, false);
                                assert!(!a.none());
                                let mut a = $id::splat(false);
                                a = a.replace(i, true);
                                assert!(!a.none());
                            }
                        }
                    }
                }
            }
        }
    };
}