1 files changed, 75 insertions, 0 deletions
diff --git a/gsl-1.9/bspline/gsl_bspline.h b/gsl-1.9/bspline/gsl_bspline.h
new file mode 100644
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--- /dev/null
+++ b/gsl-1.9/bspline/gsl_bspline.h
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+/* bspline/gsl_bspline.h
+ * 
+ * Copyright (C) 2006 Patrick Alken
+ * 
+ * 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_BSPLINE_H__
+#define __GSL_BSPLINE_H__
+
+#include <stdlib.h>
+#include <gsl/gsl_math.h>
+#include <gsl/gsl_vector.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
+
+typedef struct
+{
+  size_t k;      /* spline order */
+  size_t km1;    /* k - 1 (polynomial order) */
+  size_t l;      /* number of polynomial pieces on interval */
+  size_t nbreak; /* number of breakpoints (l + 1) */
+  size_t n;      /* number of bspline basis functions (l + k - 1) */
+
+  gsl_vector *knots;  /* knots vector */
+  gsl_vector *deltal; /* left delta */
+  gsl_vector *deltar; /* right delta */
+  gsl_vector *B;      /* temporary spline results */
+} gsl_bspline_workspace;
+
+gsl_bspline_workspace *
+gsl_bspline_alloc(const size_t k, const size_t nbreak);
+
+void gsl_bspline_free(gsl_bspline_workspace *w);
+
+size_t gsl_bspline_ncoeffs (gsl_bspline_workspace * w);
+size_t gsl_bspline_order (gsl_bspline_workspace * w);
+size_t gsl_bspline_nbreak (gsl_bspline_workspace * w);
+double gsl_bspline_breakpoint (size_t i, gsl_bspline_workspace * w);
+
+int
+gsl_bspline_knots(const gsl_vector *breakpts, gsl_bspline_workspace *w);
+
+int gsl_bspline_knots_uniform(const double a, const double b,
+                              gsl_bspline_workspace *w);
+
+int
+gsl_bspline_eval(const double x, gsl_vector *B,
+                 gsl_bspline_workspace *w);
+
+__END_DECLS
+
+#endif /* __GSL_BSPLINE_H__ */