Hopefully added _fileio module to the Windows build system
diff --git a/PC/pyconfig.h b/PC/pyconfig.h
index 1892cf1..7cba340 100644
--- a/PC/pyconfig.h
+++ b/PC/pyconfig.h
@@ -207,12 +207,13 @@
#endif /* MS_WIN32 && !MS_WIN64 */
typedef int pid_t;
-#define hypot _hypot
#include <float.h>
#define Py_IS_NAN _isnan
#define Py_IS_INFINITY(X) (!_finite(X) && !_isnan(X))
#define Py_IS_FINITE(X) _finite(X)
+#define copysign _copysign
+#define hypot _hypot
#endif /* _MSC_VER */
@@ -392,7 +393,7 @@
/* Fairly standard from here! */
/* Define to 1 if you have the `copysign' function. */
-/* #define HAVE_COPYSIGN 1*/
+#define HAVE_COPYSIGN 1
/* Define to 1 if you have the `isinf' function. */
#define HAVE_ISINF 1