Add fake use to suppress defined-but-unused warnings

[oota-llvm.git] / lib / Support / IsNAN.cpp

diff --git a/lib/Support/IsNAN.cpp b/lib/Support/IsNAN.cpp
index 75c813f41aabbccf6e73e23d742f0e7dce097b4d..bdfdfbf3155dad820f42fef2fdd53d133dff92d2 100644 (file)
--- a/lib/Support/IsNAN.cpp
+++ b/lib/Support/IsNAN.cpp
@@ -1,17 +1,18 @@
 //===-- IsNAN.cpp ---------------------------------------------------------===//
-// 
+//
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
-// 
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
 //===----------------------------------------------------------------------===//
 //
-// Platform-independent wrapper around C99 isnan(). 
+// Platform-independent wrapper around C99 isnan().
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Config/config.h"
+
 #if HAVE_ISNAN_IN_MATH_H
 # include <math.h>
 #elif HAVE_ISNAN_IN_CMATH
@@ -19,13 +20,14 @@
 #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
 
 namespace llvm {
-
-int IsNAN (float f)  { return isnan (f); }
-int IsNAN (double d) { return isnan (d); }
-
-}; // end namespace llvm;
+  int IsNAN(float f)  { return isnan(f); }
+  int IsNAN(double d) { return isnan(d); }
+} // end namespace llvm;