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/*
Copyright (C) 2015 Vladimir Glazachev
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_mod.h"
#include "aprcl.h"
void
unity_zp_pow_fmpz(unity_zp f, const unity_zp g, const fmpz_t pow)
{
slong i;
unity_zp temp;
unity_zp_init(temp, f->p, f->exp, fmpz_mod_ctx_modulus(f->ctx));
unity_zp_set_zero(f);
unity_zp_coeff_set_ui(f, 0, 1);
i = fmpz_bits(pow) - 1;
while (i >= 0)
{
unity_zp_sqr(temp, f);
unity_zp_swap(f, temp);
if (fmpz_tstbit(pow, i) == 1)
{
unity_zp_mul(temp, f, g);
unity_zp_swap(f, temp);
}
i--;
}
unity_zp_clear(temp);
}
void
unity_zp_pow_ui(unity_zp f, const unity_zp g, ulong pow)
{
fmpz_t p;
fmpz_init_set_ui(p, pow);
unity_zp_pow_fmpz(f, g, p);
fmpz_clear(p);
}