mirror of
https://github.com/vale981/arb
synced 2025-03-05 09:21:38 -05:00
38 lines
965 B
C
38 lines
965 B
C
/*
|
|
Copyright (C) 2016 Pascal Molin
|
|
|
|
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_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);
|
|
}
|