/*
    Copyright (C) 2015 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_add_si(acb_poly_t res, const acb_poly_t x, slong y, slong prec)
{
    slong len = x->length;

    if (len == 0)
    {
        acb_poly_set_si(res, y);
    }
    else
    {
        acb_poly_fit_length(res, len);

        if (y >= 0)
            acb_add_ui(res->coeffs, x->coeffs, y, prec);
        else
            acb_sub_ui(res->coeffs, x->coeffs, -y, prec);

        if (res != x)
            _acb_vec_set(res->coeffs + 1, x->coeffs + 1, len - 1);

        _acb_poly_set_length(res, len);
        _acb_poly_normalise(res);
    }
}