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diff --git a/gsl-1.9/siman/gsl_siman.h b/gsl-1.9/siman/gsl_siman.h
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+++ b/gsl-1.9/siman/gsl_siman.h
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+/* siman/gsl_siman.h
+ * 
+ * Copyright (C) 1996, 1997, 1998, 1999, 2000 Mark Galassi
+ * 
+ * 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.
+ */
+
+#ifndef __GSL_SIMAN_H__
+#define __GSL_SIMAN_H__
+#include <stdlib.h>
+#include <gsl/gsl_rng.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
+
+/* types for the function pointers passed to gsl_siman_solve */
+
+typedef double (*gsl_siman_Efunc_t) (void *xp);
+typedef void (*gsl_siman_step_t) (const gsl_rng *r, void *xp, double step_size);
+typedef double (*gsl_siman_metric_t) (void *xp, void *yp);
+typedef void (*gsl_siman_print_t) (void *xp);
+typedef void (*gsl_siman_copy_t) (void *source, void *dest);
+typedef void * (*gsl_siman_copy_construct_t) (void *xp);
+typedef void (*gsl_siman_destroy_t) (void *xp);
+
+/* this structure contains all the information needed to structure the
+   search, beyond the energy function, the step function and the
+   initial guess. */
+
+typedef struct {
+  int n_tries;          /* how many points to try for each step */
+  int iters_fixed_T;    /* how many iterations at each temperature? */
+  double step_size;     /* max step size in the random walk */
+  /* the following parameters are for the Boltzmann distribution */
+  double k, t_initial, mu_t, t_min;
+} gsl_siman_params_t;
+
+/* prototype for the workhorse function */
+
+void gsl_siman_solve(const gsl_rng * r, 
+                     void *x0_p, gsl_siman_Efunc_t Ef,
+                     gsl_siman_step_t take_step,
+                     gsl_siman_metric_t distance,
+                     gsl_siman_print_t print_position,
+                     gsl_siman_copy_t copyfunc,
+                     gsl_siman_copy_construct_t copy_constructor,
+                     gsl_siman_destroy_t destructor,
+                     size_t element_size,
+                     gsl_siman_params_t params);
+
+void 
+gsl_siman_solve_many (const gsl_rng * r, void *x0_p, gsl_siman_Efunc_t Ef,
+                      gsl_siman_step_t take_step,
+                      gsl_siman_metric_t distance,
+                      gsl_siman_print_t print_position,
+                      size_t element_size,
+                      gsl_siman_params_t params);
+
+__END_DECLS
+
+#endif /* __GSL_SIMAN_H__ */