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diff --git a/gsl-1.9/specfunc/gsl_sf_fermi_dirac.h b/gsl-1.9/specfunc/gsl_sf_fermi_dirac.h
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+/* specfunc/gsl_sf_fermi_dirac.h
+ * 
+ * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman
+ * 
+ * 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 2 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.
+ */
+
+/* Author:  G. Jungman */
+
+#ifndef __GSL_SF_FERMI_DIRAC_H__
+#define __GSL_SF_FERMI_DIRAC_H__
+
+#include <gsl/gsl_sf_result.h>
+
+#undef __BEGIN_DECLS
+#undef __END_DECLS
+#ifdef __cplusplus
+# define __BEGIN_DECLS extern "C" {
+# define __END_DECLS }
+#else
+# define __BEGIN_DECLS /* empty */
+# define __END_DECLS /* empty */
+#endif
+
+__BEGIN_DECLS
+
+
+/* Complete Fermi-Dirac Integrals:
+ *
+ *  F_j(x)   := 1/Gamma[j+1] Integral[ t^j /(Exp[t-x] + 1), {t,0,Infinity}]
+ *
+ *
+ * Incomplete Fermi-Dirac Integrals:
+ *
+ *  F_j(x,b) := 1/Gamma[j+1] Integral[ t^j /(Exp[t-x] + 1), {t,b,Infinity}]
+ */
+
+
+/* Complete integral F_{-1}(x) = e^x / (1 + e^x)
+ *
+ * exceptions: GSL_EUNDRFLW
+ */
+int     gsl_sf_fermi_dirac_m1_e(const double x, gsl_sf_result * result);
+double     gsl_sf_fermi_dirac_m1(const double x);
+
+
+/* Complete integral F_0(x) = ln(1 + e^x)
+ *
+ * exceptions: GSL_EUNDRFLW
+ */
+int     gsl_sf_fermi_dirac_0_e(const double x, gsl_sf_result * result);
+double     gsl_sf_fermi_dirac_0(const double x);
+
+
+/* Complete integral F_1(x)
+ *
+ * exceptions: GSL_EUNDRFLW, GSL_EOVRFLW
+ */
+int     gsl_sf_fermi_dirac_1_e(const double x, gsl_sf_result * result);
+double     gsl_sf_fermi_dirac_1(const double x);
+
+
+/* Complete integral F_2(x)
+ *
+ * exceptions: GSL_EUNDRFLW, GSL_EOVRFLW
+ */
+int     gsl_sf_fermi_dirac_2_e(const double x, gsl_sf_result * result);
+double     gsl_sf_fermi_dirac_2(const double x);
+
+
+/* Complete integral F_j(x)
+ * for integer j
+ *
+ * exceptions: GSL_EUNDRFLW, GSL_EOVRFLW
+ */
+int     gsl_sf_fermi_dirac_int_e(const int j, const double x, gsl_sf_result * result);
+double     gsl_sf_fermi_dirac_int(const int j, const double x);
+
+
+/* Complete integral F_{-1/2}(x)
+ *
+ * exceptions: GSL_EUNDRFLW, GSL_EOVRFLW
+ */
+int     gsl_sf_fermi_dirac_mhalf_e(const double x, gsl_sf_result * result);
+double     gsl_sf_fermi_dirac_mhalf(const double x);
+
+
+/* Complete integral F_{1/2}(x)
+ *
+ * exceptions: GSL_EUNDRFLW, GSL_EOVRFLW
+ */
+int     gsl_sf_fermi_dirac_half_e(const double x, gsl_sf_result * result);
+double     gsl_sf_fermi_dirac_half(const double x);
+
+
+/* Complete integral F_{3/2}(x)
+ *
+ * exceptions: GSL_EUNDRFLW, GSL_EOVRFLW
+ */
+int     gsl_sf_fermi_dirac_3half_e(const double x, gsl_sf_result * result);
+double     gsl_sf_fermi_dirac_3half(const double x);
+
+
+/* Incomplete integral F_0(x,b) = ln(1 + e^(b-x)) - (b-x)
+ *
+ * exceptions: GSL_EUNDRFLW, GSL_EDOM
+ */
+int     gsl_sf_fermi_dirac_inc_0_e(const double x, const double b, gsl_sf_result * result);
+double     gsl_sf_fermi_dirac_inc_0(const double x, const double b);
+
+
+__END_DECLS
+
+#endif /* __GSL_SF_FERMI_DIRAC_H__ */