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-rw-r--r--PC/pyconfig.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/PC/pyconfig.h b/PC/pyconfig.h
index a9c1613807..cb42131d4f 100644
--- a/PC/pyconfig.h
+++ b/PC/pyconfig.h
@@ -162,6 +162,7 @@ typedef int pid_t;
#include <float.h>
#define Py_IS_NAN _isnan
#define Py_IS_INFINITY(X) (!_finite(X) && !_isnan(X))
+#define Py_IS_FINITE(X) _finite(X)
#endif /* _MSC_VER */