hlog symbol lookup should not restricted to global namespace

Eigen/src/Core/arch/Default/Half.h

diff --git a/Eigen/src/Core/arch/Default/Half.h b/Eigen/src/Core/arch/Default/Half.h
index d2768b3..073cf6f 100644
--- a/Eigen/src/Core/arch/Default/Half.h
+++ b/Eigen/src/Core/arch/Default/Half.h
@@ -685,7 +685,7 @@
 #if (defined(EIGEN_HAS_CUDA_FP16) && EIGEN_CUDA_SDK_VER >= 80000 && defined(EIGEN_CUDA_ARCH) && \
      EIGEN_CUDA_ARCH >= 530) ||                                                                 \
     (defined(EIGEN_HAS_HIP_FP16) && defined(EIGEN_HIP_DEVICE_COMPILE))
-  return half(::hlog(a));
+  return half(hlog(a));
 #else
   return half(::logf(float(a)));
 #endif