60 lines
1.8 KiB
C++
60 lines
1.8 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) 2007 David Harvey, William Hart
|
||
|
|
Copyright (C) 2010 Sebastian Pancratz
|
||
|
|
Copyright (C) 2013 Tom Bachmann (C++ adaptation)
|
||
|
|
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
/*
|
||
|
|
Demo FLINT program for computing the q-expansion of the delta function.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <iostream>
|
||
|
|
#include <cstdlib>
|
||
|
|
#include "fmpzxx.h"
|
||
|
|
#include "arithxx.h"
|
||
|
|
|
||
|
|
using namespace flint;
|
||
|
|
using namespace std;
|
||
|
|
|
||
|
|
int main(int argc, char* argv[])
|
||
|
|
{
|
||
|
|
slong N = 0;
|
||
|
|
|
||
|
|
if (argc == 2)
|
||
|
|
N = atol(argv[1]);
|
||
|
|
|
||
|
|
if (argc != 2 || N < 1)
|
||
|
|
{
|
||
|
|
flint_printf("Syntax: delta_qexp <integer>\n");
|
||
|
|
flint_printf("where <integer> is the (positive) number of terms to compute\n");
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
std::cout << "Coefficient of q^" << N << " is "
|
||
|
|
<< ramanujan_tau(fmpzxx(N)) << '\n';
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|