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

70 lines
2.1 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) 2011 Fredrik Johansson
******************************************************************************/
#include "fmpz_mat.h"
void
fmpz_mat_multi_mod_ui_precomp(nmod_mat_t * residues, slong nres,
const fmpz_mat_t mat, const fmpz_comb_t comb, fmpz_comb_temp_t temp)
{
slong i, j, k;
mp_ptr r;
r = _nmod_vec_init(nres);
for (i = 0; i < fmpz_mat_nrows(mat); i++)
{
for (j = 0; j < fmpz_mat_ncols(mat); j++)
{
fmpz_multi_mod_ui(r, fmpz_mat_entry(mat, i, j), comb, temp);
for (k = 0; k < nres; k++)
nmod_mat_entry(residues[k], i, j) = r[k];
}
}
_nmod_vec_clear(r);
}
void
fmpz_mat_multi_mod_ui(nmod_mat_t * residues, slong nres, const fmpz_mat_t mat)
{
fmpz_comb_t comb;
fmpz_comb_temp_t temp;
mp_ptr primes;
slong i;
primes = _nmod_vec_init(nres);
for (i = 0; i < nres; i++)
primes[i] = residues[i]->mod.n;
fmpz_comb_init(comb, primes, nres);
fmpz_comb_temp_init(temp, comb);
fmpz_mat_multi_mod_ui_precomp(residues, nres, mat, comb, temp);
fmpz_comb_clear(comb);
fmpz_comb_temp_clear(temp);
_nmod_vec_clear(primes);
}