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/*
Copyright (C) 2022 Daniel Schultz
Copyright (C) 2022 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 "fmpzi.h"
slong
fmpzi_canonical_unit_i_pow(const fmpzi_t x)
{
int s, t;
s = fmpz_cmp(fmpzi_realref(x), fmpzi_imagref(x));
if (s == 0)
{
if (fmpz_sgn(fmpzi_realref(x)) < 0)
return 2;
else
return 0;
}
else
{
t = fmpz_cmpabs(fmpzi_realref(x), fmpzi_imagref(x));
if (s > 0)
return (t <= 0) ? 1 : 0;
else
return (t <= 0) ? 3 : 2;
}
}