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diff --git a/include/math.h b/include/math.h
index 4e6304a..4d245d4 100644
--- a/include/math.h
+++ b/include/math.h
@@ -290,6 +290,9 @@ float          truncf(float x);
 long double    truncl(long double x);
 
 */
+#  ifdef __CUDACC__
+#    include <math_cuda.h>
+#  else
 
 #  include <__config>
 
@@ -323,7 +326,7 @@ extern "C++" {
 #      undef isinf
 #    endif
 
-#    ifdef isnan
+#    if defined(isnan) && !defined(_LIBCPP_MSVCRT)
 #      undef isnan
 #    endif
 
@@ -503,6 +506,8 @@ using std::__math::trunc;
 
 #  endif // __cplusplus
 
+#  endif // __CUDACC__
+
 #else // _LIBCPP_MATH_H
 
 // This include lives outside the header guard in order to support an MSVC