Update upstream source from tag 'upstream/1.52.1+dfsg1'

[rustc.git] / vendor / packed_simd / src / api / default.rs

diff --git a/vendor/packed_simd/src/api/default.rs b/vendor/packed_simd/src/api/default.rs
new file mode 100644 (file)
index 0000000..843d51b
--- /dev/null
+++ b/vendor/packed_simd/src/api/default.rs
@@ -0,0 +1,28 @@
+//! Implements `Default` for vector types.
+
+macro_rules! impl_default {
+    ([$elem_ty:ident; $elem_count:expr]: $id:ident | $test_tt:tt) => {
+        impl Default for $id {
+            #[inline]
+            fn default() -> Self {
+                Self::splat($elem_ty::default())
+            }
+        }
+
+        test_if!{
+            $test_tt:
+            paste::item! {
+                pub mod [<$id _default>] {
+                    use super::*;
+                    #[cfg_attr(not(target_arch = "wasm32"), test)] #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
+                    fn default() {
+                        let a = $id::default();
+                        for i in 0..$id::lanes() {
+                            assert_eq!(a.extract(i), $elem_ty::default());
+                        }
+                    }
+                }
+            }
+        }
+    };
+}