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-rw-r--r--src/include/port/win32.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/include/port/win32.h b/src/include/port/win32.h
index 2c2d93765ee..974807f5841 100644
--- a/src/include/port/win32.h
+++ b/src/include/port/win32.h
@@ -427,8 +427,10 @@ typedef unsigned short mode_t;
#define W_OK 2
#define R_OK 4
+#if (_MSC_VER < 1800)
#define isinf(x) ((_fpclass(x) == _FPCLASS_PINF) || (_fpclass(x) == _FPCLASS_NINF))
#define isnan(x) _isnan(x)
+#endif
/* Pulled from Makefile.port in mingw */
#define DLSUFFIX ".dll"