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

[rustc.git] / vendor / packed_simd / src / api / cmp / ord.rs

diff --git a/vendor/packed_simd/src/api/cmp/ord.rs b/vendor/packed_simd/src/api/cmp/ord.rs
new file mode 100644 (file)
index 0000000..e54ba3b
--- /dev/null
+++ b/vendor/packed_simd/src/api/cmp/ord.rs
@@ -0,0 +1,43 @@
+//! Implements `Ord` for vector types.
+
+macro_rules! impl_cmp_ord {
+    (
+        [$elem_ty:ident; $elem_count:expr]:
+        $id:ident | $test_tt:tt |
+        ($true:expr, $false:expr)
+    ) => {
+        impl $id {
+            /// Returns a wrapper that implements `Ord`.
+            #[inline]
+            pub fn lex_ord(&self) -> LexicographicallyOrdered<$id> {
+                LexicographicallyOrdered(*self)
+            }
+        }
+
+        impl crate::cmp::Ord for LexicographicallyOrdered<$id> {
+            #[inline]
+            fn cmp(&self, other: &Self) -> crate::cmp::Ordering {
+                match self.partial_cmp(other) {
+                    Some(x) => x,
+                    None => unsafe { crate::hint::unreachable_unchecked() },
+                }
+            }
+        }
+
+        test_if!{
+            $test_tt:
+            paste::item! {
+                pub mod [<$id _cmp_ord>] {
+                    use super::*;
+                    #[cfg_attr(not(target_arch = "wasm32"), test)] #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
+                    fn eq() {
+                        fn foo<E: crate::cmp::Ord>(_: E) {}
+                        let a = $id::splat($false);
+                        foo(a.partial_lex_ord());
+                        foo(a.lex_ord());
+                    }
+                }
+            }
+        }
+    };
+}