diff --git a/nac3core/src/codegen/llvm_intrinsics.rs b/nac3core/src/codegen/llvm_intrinsics.rs
index 46b5aeea6..27f6b59c0 100644
--- a/nac3core/src/codegen/llvm_intrinsics.rs
+++ b/nac3core/src/codegen/llvm_intrinsics.rs
@@ -671,13 +671,14 @@ pub fn call_float_round<'ctx>(
 }
 
 /// Invokes the
-/// [`llvm.roundeven`](https://llvm.org/docs/LangRef.html#llvm-roundeven-intrinsic) intrinsic.
+/// [`llvm.nearbyint`](https://llvm.org/docs/LangRef.html#llvm-nearbyint-intrinsic)
+/// Note [`llvm.roundeven`](https://llvm.org/docs/LangRef.html#llvm-roundeven-intrinsic) not supported on all platforms
 pub fn call_float_roundeven<'ctx>(
     ctx: &CodeGenContext<'ctx, '_>,
     val: FloatValue<'ctx>,
     name: Option<&str>,
 ) -> FloatValue<'ctx> {
-    const FN_NAME: &str = "llvm.roundeven";
+    const FN_NAME: &str = "llvm.nearbyint";
 
     let llvm_float_t = val.get_type();
 
diff --git a/nac3standalone/demo/src/math.py b/nac3standalone/demo/src/math.py
index 290c2123d..a376de63a 100644
--- a/nac3standalone/demo/src/math.py
+++ b/nac3standalone/demo/src/math.py
@@ -37,7 +37,7 @@ def test_round64():
         output_int64(round64(x))
 
 def test_np_round():
-    for x in [-1.5, -0.5, 0.5, 1.5, dbl_inf(), -dbl_inf(), dbl_nan()]:
+    for x in [-1.5, -0.5, 0.5, 1.5, dbl_inf(), -dbl_inf(), dbl_nan(), 0.0, -0.0, 1.6, 1.4, -1.4, -1.6]:
         output_float64(np_round(x))
 
 def test_np_isnan():