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/*
Copyright (C) 2018 Fredrik Johansson
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 "acb.h"
void
acb_real_abs(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
{
if (arb_is_nonnegative(acb_realref(z)))
{
acb_set_round(res, z, prec);
}
else if (arb_is_negative(acb_realref(z)))
{
acb_neg_round(res, z, prec);
}
else
{
acb_t t;
acb_init(t);
acb_neg(t, z);
acb_union(res, z, t, prec);
acb_clear(t);
}
}
}