functions.h

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/*  
 *  Copyright (C) 2001-2017 Stefan Weinzierl
 *
 *  This program 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.
 *
 *  This program 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
 
 
#ifndef __NESTEDSUMS_FUNCTIONS_H__
#define __NESTEDSUMS_FUNCTIONS_H__
 
#include "ginac/ginac.h"
 
namespace nestedsums {
 
// Harmonic sums
// first parameter is a GiNaC::lst holding the degrees, second parameter is the index
DECLARE_FUNCTION_2P(Harmonic_sum)
 
 
// Euler-Zagier sums
// first parameter is a GiNaC::lst holding the degrees, second parameter holds the index
DECLARE_FUNCTION_2P(EulerZagier_sum)
 
 
// S sums to infinity
// like the nestedsums object, arguments are in same order
DECLARE_FUNCTION_2P(S_sum_infinity)
 
 
// S sums
// like the nestedsums object, arguments are in same order
DECLARE_FUNCTION_3P(S_sum)
 
 
// Z sums
// like the nestedsums object, arguments are in same order
DECLARE_FUNCTION_3P(Z_sum)
 
 
// converts in an expression the ginac functions to the equivalent nestedsums objects
extern GiNaC::ex convert_to_nestedsums(const GiNaC::ex & e);
 
 
// converts in an expression the nestedsums objects to the equivalent ginac functions
extern GiNaC::ex convert_to_ginac_functions(const GiNaC::ex & e);
 
 
} // namespace nestedsums
 
 
#endif // __NESTEDSUMS_FUNCTIONS_H__