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/*
Copyright (C) 2012 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_integral(arb_ptr res, arb_srcptr poly, slong len, slong prec)
{
slong k = len - 1;
for (k = len - 1; k > 0; k--)
arb_div_ui(res + k, poly + k - 1, k, prec);
arb_zero(res);
}
void
arb_poly_integral(arb_poly_t res, const arb_poly_t poly, slong prec)
{
arb_poly_fit_length(res, poly->length + 1);
_arb_poly_integral(res->coeffs, poly->coeffs, poly->length + 1, prec);
_arb_poly_set_length(res, poly->length + 1);
_arb_poly_normalise(res);
}
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