From 278007218a49cd01b971d4630bdd17b9f7658d69 Mon Sep 17 00:00:00 2001
From: Yaxun Sam Liu <yaxun.liu@amd.com>
Date: Wed, 27 Feb 2019 12:33:26 -0500
Subject: [PATCH] Fix nan for windows

---
 include/hip/hcc_detail/math_functions.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/hip/hcc_detail/math_functions.h b/include/hip/hcc_detail/math_functions.h
index 8ac87425b9..c384c5573d 100644
--- a/include/hip/hcc_detail/math_functions.h
+++ b/include/hip/hcc_detail/math_functions.h
@@ -918,9 +918,10 @@ double nan(const char* tagp)
 
     return tmp.val;
 #else
+    static_assert(sizeof(uint64_t)==sizeof(double));
     uint64_t val = __make_mantissa(tagp);
     val |= 0xFFF << 51;
-    return reinterpret_cast<double>(val);
+    return *reinterpret_cast<double*>(&val);
 #endif
 }
 __DEVICE__