pqc/external/flint-2.4.3/fq_zech/get_fq_nmod.c
2014-05-24 23:16:06 +02:00

47 lines
1.5 KiB
C

/*=============================================================================
This file is part of FLINT.
FLINT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FLINT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FLINT; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
Copyright (C) 2013 Mike Hansen
******************************************************************************/
#include "fq_zech.h"
void
fq_zech_get_fq_nmod(fq_nmod_t rop, const fq_zech_t op, const fq_zech_ctx_t ctx)
{
slong i;
mp_limb_t q, r;
nmod_poly_fit_length(rop, fq_zech_ctx_degree(ctx));
q = ctx->eval_table[op->value];
i = 0;
while (q >= ctx->p)
{
r = n_divrem2_precomp(&q, q, ctx->p, ctx->ppre);
nmod_poly_set_coeff_ui(rop, i, r);
i ++;
}
nmod_poly_set_coeff_ui(rop, i, q);
}