diff --git a/Cargo.lock b/Cargo.lock
index 1ede15ff002..1584c704fb2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -178,6 +178,8 @@ version = "0.1.0"
 dependencies = [
  "core_simd",
  "test_helpers",
+ "wasm-bindgen",
+ "wasm-bindgen-test",
 ]
 
 [[package]]
diff --git a/crates/std_float/src/lib.rs b/crates/std_float/src/lib.rs
index 44bbcba412f..c9c4345adad 100644
--- a/crates/std_float/src/lib.rs
+++ b/crates/std_float/src/lib.rs
@@ -1,4 +1,3 @@
-#![cfg_attr(feature = "as_crate", no_std)] // We are std!
 #![cfg_attr(
     feature = "as_crate",
     feature(core_intrinsics),
@@ -188,4 +187,14 @@ where
     fn fract(self) -> Self {
         self - self.trunc()
     }
+
+    // https://github.com/llvm/llvm-project/issues/83729
+    #[cfg(target_arch = "aarch64")]
+    fn ln(self) -> Self {
+        let mut ln = Self::splat(0f64);
+        for i in 0..N {
+            ln[i] = self[i].ln()
+        }
+        ln
+    }
 }
diff --git a/crates/std_float/tests/float.rs b/crates/std_float/tests/float.rs
index 60bdf00fba8..c66c968f8c6 100644
--- a/crates/std_float/tests/float.rs
+++ b/crates/std_float/tests/float.rs
@@ -53,9 +53,19 @@ macro_rules! impl_tests {
         mod $scalar {
             use std_float::StdFloat;
 
-            unary_test! { $scalar, sqrt, sin, cos, exp, exp2, ln, log2, log10, ceil, floor, round, trunc, fract }
+            unary_test! { $scalar, sqrt, sin, cos, exp, exp2, ln, log2, log10, ceil, floor, round, trunc }
             binary_test! { $scalar, log }
             ternary_test! { $scalar, mul_add }
+
+            test_helpers::test_lanes! {
+                fn fract<const LANES: usize>() {
+                    test_helpers::test_unary_elementwise_flush_subnormals(
+                        &core_simd::simd::Simd::<$scalar, LANES>::fract,
+                        &$scalar::fract,
+                        &|_| true,
+                    )
+                }
+            }
         }
     }
 }