From de81ddf0440fdaea9e889c284b5eb1f0896277f4 Mon Sep 17 00:00:00 2001
From: Namjae Choi <Namjae.Choi@inl.gov>
Date: Thu, 16 Jul 2026 17:21:08 -0600
Subject: [PATCH] Manually implement nearbyint() for Kokkos SYCL backend

---
 src/utilities/include/metaphysicl/metaphysicl_math.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/utilities/include/metaphysicl/metaphysicl_math.h b/src/utilities/include/metaphysicl/metaphysicl_math.h
index 9107281..88ee54b 100644
--- a/src/utilities/include/metaphysicl/metaphysicl_math.h
+++ b/src/utilities/include/metaphysicl/metaphysicl_math.h
@@ -18,6 +18,18 @@
 #include <cmath>
 #include <type_traits>
 
+#if defined (METAPHYSICL_KOKKOS_COMPILATION) && defined(KOKKOS_ENABLE_SYCL)
+namespace Kokkos
+{
+template <typename T>
+KOKKOS_INLINE_FUNCTION
+T nearbyint(T x)
+{
+  return rint(x);
+}
+}
+#endif
+
 namespace MetaPhysicL {
 namespace math {