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source: svn/trunk/external/fastjet/internal/numconsts.hh@ 1204

Last change on this file since 1204 was 859, checked in by Pavel Demin, 12 years ago

update fastjet to version 3.0.3

File size: 1.9 KB
Line 
1//STARTHEADER
2// $Id: numconsts.hh 2577 2011-09-13 15:11:38Z salam $
3//
4// Copyright (c) 2005-2011, Matteo Cacciari, Gavin P. Salam and Gregory Soyez
5//
6//----------------------------------------------------------------------
7// This file is part of FastJet.
8//
9// FastJet is free software; you can redistribute it and/or modify
10// it under the terms of the GNU General Public License as published by
11// the Free Software Foundation; either version 2 of the License, or
12// (at your option) any later version.
13//
14// The algorithms that underlie FastJet have required considerable
15// development and are described in hep-ph/0512210. If you use
16// FastJet as part of work towards a scientific publication, please
17// include a citation to the FastJet paper.
18//
19// FastJet is distributed in the hope that it will be useful,
20// but WITHOUT ANY WARRANTY; without even the implied warranty of
21// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22// GNU General Public License for more details.
23//
24// You should have received a copy of the GNU General Public License
25// along with FastJet. If not, see <http://www.gnu.org/licenses/>.
26//----------------------------------------------------------------------
27//ENDHEADER
28
29
30
31#ifndef __FASTJET_NUMCONSTS__
32#define __FASTJET_NUMCONSTS__
33
34#include "fastjet/internal/base.hh"
35
36FASTJET_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
37
38// some common useful constants!
39
40const double pi = 3.141592653589793238462643383279502884197;
41const double twopi = 6.283185307179586476925286766559005768394;
42const double pisq = 9.869604401089358618834490999876151135314;
43const double zeta2 = 1.644934066848226436472415166646025189219;
44const double zeta3 = 1.202056903159594285399738161511449990765;
45const double eulergamma = 0.577215664901532860606512090082402431042;
46const double ln2 = 0.693147180559945309417232121458176568076;
47
48
49FASTJET_END_NAMESPACE
50
51#endif // __FASTJET_NUMCONSTS__
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