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/*
Copyright (C) 2016 Fredrik Johansson
This file is part of Arb.
Arb is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version. See <http://www.gnu.org/licenses/>.
*/
#include "arb_poly.h"
void
_arb_poly_taylor_shift(arb_ptr poly, const arb_t c, slong n, slong prec)
{
if (n <= 30 || (n <= 500 && arb_bits(c) == 1 && n < 30 + 3 * sqrt(prec))
|| (n <= 100 && arb_bits(c) < 0.01 * prec))
{
_arb_poly_taylor_shift_horner(poly, c, n, prec);
}
else if (prec > 2 * n)
{
_arb_poly_taylor_shift_convolution(poly, c, n, prec);
}
else
{
_arb_poly_taylor_shift_divconquer(poly, c, n, prec);
}
}
void
arb_poly_taylor_shift(arb_poly_t g, const arb_poly_t f,
const arb_t c, slong prec)
{
if (f != g)
arb_poly_set_round(g, f, prec);
_arb_poly_taylor_shift(g->coeffs, c, g->length, prec);
}
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