94 lines
2.5 KiB
C
94 lines
2.5 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) 2012 William Hart
|
||
|
|
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <gmp.h>
|
||
|
|
#include <float.h>
|
||
|
|
#include "flint.h"
|
||
|
|
#include "fmpz.h"
|
||
|
|
#include "fmpz_mod_poly.h"
|
||
|
|
#include "ulong_extras.h"
|
||
|
|
#include "profiler.h"
|
||
|
|
|
||
|
|
int
|
||
|
|
main(void)
|
||
|
|
{
|
||
|
|
slong len, iter;
|
||
|
|
fmpz_mod_poly_t f, g, q, r;
|
||
|
|
fmpz_t N, c, one;
|
||
|
|
timeit_t t;
|
||
|
|
char N_str[201] = "29799904256775982671863388319999573561548825027149399972531599612392671227006866151136667908641695103422986028076864929902803267437351318167549013218980573566942647077444419419003164546362008247462049";
|
||
|
|
|
||
|
|
FLINT_TEST_INIT(state);
|
||
|
|
|
||
|
|
|
||
|
|
len = 36865;
|
||
|
|
|
||
|
|
fmpz_init(N);
|
||
|
|
fmpz_init(c);
|
||
|
|
fmpz_init(one);
|
||
|
|
|
||
|
|
fmpz_set_str(N, N_str, 10);
|
||
|
|
fmpz_set_ui(one, 1);
|
||
|
|
|
||
|
|
fmpz_mod_poly_init2(f, N, len);
|
||
|
|
fmpz_mod_poly_init2(g, N, 2*len - 1);
|
||
|
|
fmpz_mod_poly_init2(q, N, len);
|
||
|
|
fmpz_mod_poly_init2(r, N, len - 1);
|
||
|
|
|
||
|
|
/*
|
||
|
|
Construct random polynomial f
|
||
|
|
*/
|
||
|
|
|
||
|
|
fmpz_mod_poly_randtest(f, state, len);
|
||
|
|
|
||
|
|
fmpz_mod_poly_set_coeff_fmpz(g, 2*len - 2, one);
|
||
|
|
|
||
|
|
/*
|
||
|
|
Time inversion
|
||
|
|
*/
|
||
|
|
|
||
|
|
timeit_start(t);
|
||
|
|
|
||
|
|
for (iter = 0; iter < 10; iter++)
|
||
|
|
fmpz_mod_poly_inv_series_newton(q, f, len);
|
||
|
|
|
||
|
|
timeit_stop(t);
|
||
|
|
|
||
|
|
flint_printf("len = %wd, time = %wdms\n", len, ((slong) t->cpu)/10);
|
||
|
|
|
||
|
|
fmpz_mod_poly_clear(f);
|
||
|
|
fmpz_mod_poly_clear(g);
|
||
|
|
fmpz_mod_poly_clear(q);
|
||
|
|
fmpz_mod_poly_clear(r);
|
||
|
|
|
||
|
|
fmpz_clear(N);
|
||
|
|
fmpz_clear(c);
|
||
|
|
fmpz_clear(one);
|
||
|
|
|
||
|
|
flint_randclear(state);
|
||
|
|
}
|