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source: git/external/fastjet/internal/numconsts.hh@ e72ee4b

Last change on this file since e72ee4b was 35cdc46, checked in by Pavel Demin <demin@…>, 10 years ago

upgrade FastJet to version 3.1.0-beta.1, upgrade Nsubjettiness to version 2.1.0, add SoftKiller version 1.0.0

  • Property mode set to 100644
File size: 2.0 KB
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[35cdc46]1//FJSTARTHEADER
2// $Id: numconsts.hh 3433 2014-07-23 08:17:03Z salam $
[d7d2da3]3//
[35cdc46]4// Copyright (c) 2005-2014, Matteo Cacciari, Gavin P. Salam and Gregory Soyez
[d7d2da3]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
[35cdc46]15// development. They are described in the original FastJet paper,
16// hep-ph/0512210 and in the manual, arXiv:1111.6097. If you use
[d7d2da3]17// FastJet as part of work towards a scientific publication, please
[35cdc46]18// quote the version you use and include a citation to the manual and
19// optionally also to hep-ph/0512210.
[d7d2da3]20//
21// FastJet is distributed in the hope that it will be useful,
22// but WITHOUT ANY WARRANTY; without even the implied warranty of
23// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24// GNU General Public License for more details.
25//
26// You should have received a copy of the GNU General Public License
27// along with FastJet. If not, see <http://www.gnu.org/licenses/>.
28//----------------------------------------------------------------------
[35cdc46]29//FJENDHEADER
[d7d2da3]30
31
32
33#ifndef __FASTJET_NUMCONSTS__
34#define __FASTJET_NUMCONSTS__
35
36#include "fastjet/internal/base.hh"
37
38FASTJET_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
39
40// some common useful constants!
41
42const double pi = 3.141592653589793238462643383279502884197;
43const double twopi = 6.283185307179586476925286766559005768394;
44const double pisq = 9.869604401089358618834490999876151135314;
45const double zeta2 = 1.644934066848226436472415166646025189219;
46const double zeta3 = 1.202056903159594285399738161511449990765;
47const double eulergamma = 0.577215664901532860606512090082402431042;
48const double ln2 = 0.693147180559945309417232121458176568076;
49
50
51FASTJET_END_NAMESPACE
52
53#endif // __FASTJET_NUMCONSTS__
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