1 files changed, 43 insertions, 0 deletions
diff --git a/third_party/rust/packed_simd/src/api/ops/vector_neg.rs b/third_party/rust/packed_simd/src/api/ops/vector_neg.rs
new file mode 100644
index 0000000000..e2d91fd2fe
--- /dev/null
+++ b/third_party/rust/packed_simd/src/api/ops/vector_neg.rs
@@ -0,0 +1,43 @@
+//! Vertical (lane-wise) vector `Neg`.
+
+macro_rules! impl_ops_vector_neg {
+    ([$elem_ty:ident; $elem_count:expr]: $id:ident | $test_tt:tt) => {
+        impl crate::ops::Neg for $id {
+            type Output = Self;
+            #[inline]
+            fn neg(self) -> Self {
+                Self::splat(-1 as $elem_ty) * self
+            }
+        }
+        test_if!{
+            $test_tt:
+            paste::item! {
+                pub mod [<$id _ops_vector_neg>] {
+                    use super::*;
+                    #[cfg_attr(not(target_arch = "wasm32"), test)] #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
+                    fn neg() {
+                        let z = $id::splat(0 as $elem_ty);
+                        let o = $id::splat(1 as $elem_ty);
+                        let t = $id::splat(2 as $elem_ty);
+                        let f = $id::splat(4 as $elem_ty);
+
+                        let nz = $id::splat(-(0 as $elem_ty));
+                        let no = $id::splat(-(1 as $elem_ty));
+                        let nt = $id::splat(-(2 as $elem_ty));
+                        let nf = $id::splat(-(4 as $elem_ty));
+
+                        assert_eq!(-z, nz);
+                        assert_eq!(-o, no);
+                        assert_eq!(-t, nt);
+                        assert_eq!(-f, nf);
+
+                        assert_eq!(z, -nz);
+                        assert_eq!(o, -no);
+                        assert_eq!(t, -nt);
+                        assert_eq!(f, -nf);
+                    }
+                }
+            }
+        }
+    };
+}