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-rw-r--r--src/include/cctk_Math.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/include/cctk_Math.h b/src/include/cctk_Math.h
index ac1029b4..bd7c3f6f 100644
--- a/src/include/cctk_Math.h
+++ b/src/include/cctk_Math.h
@@ -39,7 +39,7 @@ int CCTK_signbit(double x);
-#ifdef __cplusplus
+#if defined __cplusplus && ! defined __CUDACC__
/* If necessary, provide fallback C implementations for C++, using the
routines declared above. */
@@ -185,8 +185,8 @@ namespace std {
#define isnormal Cactus::good_isnormal
#define signbit Cactus::good_signbit
-#endif
+#endif /* #if defined __cplusplus && ! defined __CUDACC__ */
-#endif
+#endif /* #ifndef _CCTK_MATH_H_ */