/usr/include/rheolef/gauss_chebyschev.icc is in librheolef-dev 6.5-1+b1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | /// This file is part of Rheolef.
///
/// Copyright (C) 2000-2009 Pierre Saramito
///
/// Rheolef 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.
///
/// Rheolef 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 Rheolef; if not, write to the Free Software
/// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/// lexer for qmg mesh files
/// =========================================================================
#include <cmath>
#include <iterator>
template <class Size, class OutputIterator1, class OutputIterator2>
void gauss_chebyschev (Size R, OutputIterator1 zeta, OutputIterator2 omega) {
typedef typename std::iterator_traits<OutputIterator1>::value_type T;
static T pi = acos(T(-1.));
for (Size r = 0; r < R; r++) {
zeta [r] = cos((2*T(r)+1)*pi/(2*T(R)));
omega[r] = pi/T(R);
}
}
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