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numconsts.hh

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00001 //STARTHEADER
00002 // $Id: numconsts.hh 293 2006-08-17 19:38:38Z salam $
00003 //
00004 // Copyright (c) 2005-2006, Matteo Cacciari and Gavin Salam
00005 //
00006 //----------------------------------------------------------------------
00007 // This file is part of FastJet.
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00029 //ENDHEADER
00030 
00031 
00032 
00033 #ifndef __FASTJET_NUMCONSTS__
00034 #define __FASTJET_NUMCONSTS__
00035 
00036 #include "fastjet/internal/base.hh"
00037 
00038 FASTJET_BEGIN_NAMESPACE      // defined in fastjet/internal/base.hh
00039 
00040 // some common useful constants!
00041 
00042 const double pi = 3.141592653589793238462643383279502884197;
00043 const double twopi = 6.283185307179586476925286766559005768394;
00044 const double pisq  = 9.869604401089358618834490999876151135314;
00045 const double zeta2 = 1.644934066848226436472415166646025189219;
00046 const double zeta3 = 1.202056903159594285399738161511449990765;
00047 const double eulergamma = 0.577215664901532860606512090082402431042;
00048 const double ln2   = 0.693147180559945309417232121458176568076;
00049 
00050 
00051 FASTJET_END_NAMESPACE
00052 
00053 #endif // __FASTJET_NUMCONSTS__

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