Expect isnan in std:: namespace in C++

ianhinder · Oct 22, 2012 · 470a94b · 470a94b
1 parent 355c7a3
commit 470a94b
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/Auxiliary/Cactus/KrancNumericalTools/GenericFD/src/GenericFD.h b/Auxiliary/Cactus/KrancNumericalTools/GenericFD/src/GenericFD.h
@@ -63,6 +63,9 @@ extern "C" {
 
 KRANC_WHERE static inline CCTK_REAL sgn(CCTK_REAL x)
 {
+#ifdef __cplusplus
+  using namespace std;
+#endif
   return x==(CCTK_REAL)0.0 ? (CCTK_REAL)0.0 : copysign((CCTK_REAL)1.0, x);
 }