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/*
Copyright (C) 2013 Mike Hansen
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 "fq_zech.h"
void
fq_zech_pow(fq_zech_t rop, const fq_zech_t op, const fmpz_t e,
const fq_zech_ctx_t ctx)
{
if (fmpz_sgn(e) < 0)
{
flint_throw(FLINT_ERROR, "Exception (fq_zech_pow). e < 0.\n");
}
if (fmpz_is_zero(e))
{
fq_zech_one(rop, ctx);
}
else if (fq_zech_is_zero(op, ctx))
{
fq_zech_zero(rop, ctx);
}
else if (fmpz_is_one(e))
{
fq_zech_set(rop, op, ctx);
}
else
{
fmpz_t new_e;
fmpz_init(new_e);
fmpz_mul_ui(new_e, e, op->value);
fmpz_mod_ui(new_e, new_e, ctx->qm1);
rop->value = fmpz_get_ui(new_e);
fmpz_clear(new_e);
}
}
/* TODO: Move into separate function and optimize */
void fq_zech_pow_ui(fq_zech_t rop, const fq_zech_t op,
const ulong e, const fq_zech_ctx_t ctx)
{
fmpz_t exp;
fmpz_init_set_ui(exp, e);
fq_zech_pow(rop, op, exp, ctx);
fmpz_clear(exp);
}