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/*
Copyright (C) 2016 Pascal Molin
This file is part of FLINT.
FLINT 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 3 of the License, or
(at your option) any later version. See <https://www.gnu.org/licenses/>.
*/
#include "arb.h"
#include "acb_dirichlet.h"
/* TODO: BSGS can reduce to nv mul */
void
acb_dirichlet_arb_quadratic_powers(arb_ptr v, slong nv, const arb_t x, slong prec)
{
slong i;
arb_t dx, x2;
arb_init(dx);
arb_init(x2);
arb_set(dx, x);
arb_mul(x2, x, x, prec);
for (i = 0; i < nv; i++)
{
if (i == 0)
arb_one(v + i);
else if (i == 1)
arb_set_round(v + i, x, prec);
else
{
arb_mul(dx, dx, x2, prec);
arb_mul(v + i, v + i - 1, dx, prec);
}
}
arb_clear(dx);
arb_clear(x2);
}