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diff --git a/2.3-1/thirdparty/includes/GSL/gsl/gsl_nan.h b/2.3-1/thirdparty/includes/GSL/gsl/gsl_nan.h
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+/* gsl_nan.h
+ *
+ * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2007 Gerard Jungman, Brian Gough
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GSL_NAN_H__
+#define __GSL_NAN_H__
+
+#ifdef INFINITY
+# define GSL_POSINF INFINITY
+# define GSL_NEGINF (-INFINITY)
+#elif defined(HUGE_VAL)
+# define GSL_POSINF HUGE_VAL
+# define GSL_NEGINF (-HUGE_VAL)
+#else
+# define GSL_POSINF (gsl_posinf())
+# define GSL_NEGINF (gsl_neginf())
+#endif
+
+#ifdef NAN
+# define GSL_NAN NAN
+#elif defined(INFINITY)
+# define GSL_NAN (INFINITY/INFINITY)
+#else
+# define GSL_NAN (gsl_nan())
+#endif
+
+#define GSL_POSZERO (+0.0)
+#define GSL_NEGZERO (-0.0)
+
+#endif /* __GSL_NAN_H__ */