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/*
Copyright (C) 2010 Sebastian Pancratz
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 "fmpz.h"
#include "fmpz_vec.h"
#include "fmpz_poly.h"
void
_fmpz_poly_pow_small(fmpz * res, const fmpz * poly, slong len, ulong e)
{
switch (e)
{
case 0:
fmpz_one(res);
break;
case 1:
_fmpz_vec_set(res, poly, len);
break;
case 2:
_fmpz_poly_sqr(res, poly, len);
break;
case 3:
{
slong alloc = 2 * len - 1;
fmpz *t = _fmpz_vec_init(alloc);
_fmpz_poly_sqr(t, poly, len);
_fmpz_poly_mul(res, t, alloc, poly, len);
_fmpz_vec_clear(t, alloc);
break;
}
case 4:
{
slong alloc = 2 * len - 1;
fmpz *t = _fmpz_vec_init(alloc);
_fmpz_poly_sqr(t, poly, len);
_fmpz_poly_sqr(res, t, alloc);
_fmpz_vec_clear(t, alloc);
break;
}
}
}