Patch to support MSVC, contributed by Morten Ofstad

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17219 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Support/IsNAN.cpp b/lib/Support/IsNAN.cpp
index 75c813f41aabbccf6e73e23d742f0e7dce097b4d..f7bb4e3d8e3dfe09c7873d20f2b22bd584c330f6 100644 (file)
--- a/lib/Support/IsNAN.cpp
+++ b/lib/Support/IsNAN.cpp
@@ -19,6 +19,9 @@
 #elif HAVE_STD_ISNAN_IN_CMATH
 # include <cmath>
 using std::isnan;
+#elif defined(_MSC_VER)
+#include <float.h>
+#define isnan _isnan
 #else
 # error "Don't know how to get isnan()"
 #endif