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/*
Copyright (C) 2020 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 "fmpq.h"
#include "qqbar.h"
void
qqbar_fmpq_pow_si_ui(qqbar_t res, const fmpq_t x, slong a, ulong b)
{
if (b == 0)
flint_throw(FLINT_ERROR, "(%s)\n", __func__);
if (a == 0)
{
qqbar_one(res);
}
else if (a == 1)
{
qqbar_fmpq_root_ui(res, x, b);
}
else if (fmpq_sgn(x) >= 0)
{
fmpq_t t;
fmpq_init(t);
fmpq_pow_si(t, x, a);
qqbar_fmpq_root_ui(res, t, b);
fmpq_clear(t);
}
else
{
qqbar_fmpq_root_ui(res, x, b);
if (a > 0)
{
qqbar_pow_ui(res, res, a);
}
else
{
qqbar_inv(res, res);
qqbar_pow_ui(res, res, -a);
}
}
}