/*
    Copyright (C) 2018 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.h"

void
acb_real_sgn(acb_t res, const acb_t z, int analytic, slong prec)
{
    if (!acb_is_finite(z) || (analytic && arb_contains_zero(acb_realref(z))))
    {
        acb_indeterminate(res);
    }
    else
    {
        acb_csgn(acb_realref(res), z);
        arb_zero(acb_imagref(res));
    }
}