1 files changed, 33 insertions, 0 deletions
diff --git a/third_party/rust/packed_simd/src/api/math/float/ln.rs b/third_party/rust/packed_simd/src/api/math/float/ln.rs
new file mode 100644
index 0000000000..5ceb9173ae
--- /dev/null
+++ b/third_party/rust/packed_simd/src/api/math/float/ln.rs
@@ -0,0 +1,33 @@
+//! Implements vertical (lane-wise) floating-point `ln`.
+
+macro_rules! impl_math_float_ln {
+    ([$elem_ty:ident; $elem_count:expr]: $id:ident | $test_tt:tt) => {
+        impl $id {
+            /// Returns the natural logarithm of `self`.
+            #[inline]
+            pub fn ln(self) -> Self {
+                use crate::codegen::math::float::ln::Ln;
+                Ln::ln(self)
+            }
+        }
+
+        test_if!{
+            $test_tt:
+            paste::item! {
+                pub mod [<$id _math_ln>] {
+                    use super::*;
+                    #[cfg_attr(not(target_arch = "wasm32"), test)] #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
+                    fn ln() {
+                        let z = $id::splat(0 as $elem_ty);
+                        let o = $id::splat(1 as $elem_ty);
+                        assert_eq!(z, o.ln());
+
+                        let e = $id::splat(crate::f64::consts::E as $elem_ty);
+                        let tol = $id::splat(2.4e-4 as $elem_ty);
+                        assert!((o - e.ln()).abs().le(tol).all());
+                    }
+                }
+            }
+        }
+    };
+}