Use std::isnan instead of isnan.  Brought back to you from the
future, by the reconciliation of the C++ and C99 standards. Someday.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6751 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp b/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
index 8eaae50..ab5dab5 100644
--- a/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
+++ b/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
@@ -221,7 +221,7 @@
 GenericValue lle_X_isnan(FunctionType *F, const vector<GenericValue> &Args) {
   assert(Args.size() == 1);
   GenericValue GV;
-  GV.IntVal = isnan(Args[0].DoubleVal);
+  GV.IntVal = std::isnan(Args[0].DoubleVal);
   return GV;
 }