fix compilation under gcc-5 (apache#4346)

haohuanw · Dec 29, 2016 · c91f948 · c91f948
1 parent 02cd2da
commit c91f948
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/operator/mshadow_op.h b/src/operator/mshadow_op.h
@@ -17,6 +17,7 @@ namespace mshadow_op {
 __constant__ const float PI = 3.14159265358979323846;
 #else
 const float PI = 3.14159265358979323846;
+using std::isnan;
 #endif
 
 /*! \brief identity Operation */