66 lines
1.9 KiB
C++
66 lines
1.9 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
|
||
|
|
Copyright (C) 2013 Tom Bachmann (C++ adaptation)
|
||
|
|
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
/*
|
||
|
|
Demo FLINT program for generating Stirling number matrices
|
||
|
|
and inverting them.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <cstdio>
|
||
|
|
#include "fmpz_matxx.h"
|
||
|
|
#include "fmpzxx.h"
|
||
|
|
#include "arithxx.h"
|
||
|
|
|
||
|
|
using namespace std;
|
||
|
|
using namespace flint;
|
||
|
|
|
||
|
|
int main(int argc, char* argv[])
|
||
|
|
{
|
||
|
|
if (argc != 2)
|
||
|
|
{
|
||
|
|
flint_printf("Syntax: stirling_matrix <integer>\n");
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
slong n = atoi(argv[1]);
|
||
|
|
|
||
|
|
fmpz_matxx S1(stirling_matrix_1(n, n)), S2(stirling_matrix_2(n, n));
|
||
|
|
|
||
|
|
flint_printf("S1 [Stirling numbers of 1st kind]:\n");
|
||
|
|
print_pretty(S1);
|
||
|
|
flint_printf("\n\n");
|
||
|
|
|
||
|
|
flint_printf("S2 [Stirling numbers of 2nd kind]:\n");
|
||
|
|
print_pretty(S2);
|
||
|
|
flint_printf("\n\n");
|
||
|
|
|
||
|
|
flint_printf("S1 * S2:\n");
|
||
|
|
print_pretty(S1*S2);
|
||
|
|
flint_printf("\n\n");
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|