mirror of
https://github.com/vale981/arb
synced 2025-03-05 09:21:38 -05:00
41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
/*
|
|
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 "acb_poly.h"
|
|
|
|
void
|
|
_acb_poly_taylor_shift(acb_ptr poly, const acb_t c, slong n, slong prec)
|
|
{
|
|
if (n <= 30 || (n <= 500 && acb_bits(c) == 1 && n < 30 + 3 * sqrt(prec))
|
|
|| (n <= 100 && acb_bits(c) < 0.01 * prec))
|
|
{
|
|
_acb_poly_taylor_shift_horner(poly, c, n, prec);
|
|
}
|
|
else if (prec > 2 * n)
|
|
{
|
|
_acb_poly_taylor_shift_convolution(poly, c, n, prec);
|
|
}
|
|
else
|
|
{
|
|
_acb_poly_taylor_shift_divconquer(poly, c, n, prec);
|
|
}
|
|
}
|
|
|
|
void
|
|
acb_poly_taylor_shift(acb_poly_t g, const acb_poly_t f,
|
|
const acb_t c, slong prec)
|
|
{
|
|
if (f != g)
|
|
acb_poly_set_round(g, f, prec);
|
|
|
|
_acb_poly_taylor_shift(g->coeffs, c, g->length, prec);
|
|
}
|
|
|