1 files changed, 44 insertions, 0 deletions
diff --git a/third_party/rust/packed_simd/src/api/math/float/cos.rs b/third_party/rust/packed_simd/src/api/math/float/cos.rs
new file mode 100644
index 0000000000..e5b8f46036
--- /dev/null
+++ b/third_party/rust/packed_simd/src/api/math/float/cos.rs
@@ -0,0 +1,44 @@
+//! Implements vertical (lane-wise) floating-point `cos`.
+
+macro_rules! impl_math_float_cos {
+    ([$elem_ty:ident; $elem_count:expr]: $id:ident | $test_tt:tt) => {
+        impl $id {
+            /// Cosine.
+            #[inline]
+            pub fn cos(self) -> Self {
+                use crate::codegen::math::float::cos::Cos;
+                Cos::cos(self)
+            }
+
+            /// Cosine of `self * PI`.
+            #[inline]
+            pub fn cos_pi(self) -> Self {
+                use crate::codegen::math::float::cos_pi::CosPi;
+                CosPi::cos_pi(self)
+            }
+        }
+
+        test_if!{
+            $test_tt:
+            paste::item! {
+                pub mod [<$id _math_cos>] {
+                    use super::*;
+                    #[cfg_attr(not(target_arch = "wasm32"), test)] #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
+                    fn cos() {
+                        use crate::$elem_ty::consts::PI;
+                        let z = $id::splat(0 as $elem_ty);
+                        let o = $id::splat(1 as $elem_ty);
+                        let p = $id::splat(PI as $elem_ty);
+                        let ph = $id::splat(PI as $elem_ty / 2.);
+                        let z_r = $id::splat((PI as $elem_ty / 2.).cos());
+                        let o_r = $id::splat((PI as $elem_ty).cos());
+
+                        assert_eq!(o, z.cos());
+                        assert_eq!(z_r, ph.cos());
+                        assert_eq!(o_r, p.cos());
+                    }
+                }
+            }
+        }
+    };
+}