ALL: Add flint

external/flint-2.4.3/nmod_poly/interpolate_nmod_vec.c

@@ -0,0 +1,61 @@
+/*=============================================================================
+
+    This file is part of FLINT.
+
+    FLINT 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.
+
+    FLINT 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 FLINT; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+
+=============================================================================*/
+/******************************************************************************
+
+    Copyright (C) 2011 Fredrik Johansson
+
+******************************************************************************/
+
+#include <gmp.h>
+#include "flint.h"
+#include "ulong_extras.h"
+#include "nmod_vec.h"
+#include "nmod_poly.h"
+
+
+void
+_nmod_poly_interpolate_nmod_vec(mp_ptr poly,
+                            mp_srcptr xs, mp_srcptr ys, slong n, nmod_t mod)
+{
+    if (n < 6)
+        _nmod_poly_interpolate_nmod_vec_newton(poly, xs, ys, n, mod);
+    else if (n < 16)
+        _nmod_poly_interpolate_nmod_vec_barycentric(poly, xs, ys, n, mod);
+    else
+        _nmod_poly_interpolate_nmod_vec_fast(poly, xs, ys, n, mod);
+}
+
+void
+nmod_poly_interpolate_nmod_vec(nmod_poly_t poly,
+                                    mp_srcptr xs, mp_srcptr ys, slong n)
+{
+    if (n == 0)
+    {
+        nmod_poly_zero(poly);
+    }
+    else
+    {
+        nmod_poly_fit_length(poly, n);
+        poly->length = n;
+        _nmod_poly_interpolate_nmod_vec(poly->coeffs,
+            xs, ys, n, poly->mod);
+        _nmod_poly_normalise(poly);
+    }
+}