[904] | 1 | <!-- ******************************************************** --> |
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| 2 | <!-- --> |
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| 3 | <!-- [History] --> |
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| 4 | <!-- Converted to DocBook: Katsuya Amako, Aug-2006 --> |
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| 5 | <!-- --> |
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| 6 | <!-- ******************************************************** --> |
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| 7 | |
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| 8 | <!-- ******************* Section (Level#1) ****************** --> |
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| 9 | <sect1 id="sect.Clhep"> |
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| 10 | <title> |
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| 11 | CLHEP Foundation Library |
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| 12 | </title> |
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| 13 | |
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| 14 | <para> |
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| 15 | <ulink url="http://cern.ch/clhep/"> |
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| 16 | CLHEP |
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| 17 | </ulink> |
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| 18 | is a set of Class Libraries containing many |
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| 19 | basic classes for use in High Energy Physics. |
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| 20 | </para> |
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| 21 | |
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| 22 | <para> |
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| 23 | Both a CLHEP |
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| 24 | <ulink url="http://cern.ch/clhep/manual/RefGuide/"> |
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| 25 | Reference Guide |
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| 26 | </ulink> |
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| 27 | and a |
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| 28 | <ulink url="http://cern.ch/clhep/manual/UserGuide/"> |
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| 29 | User Guide |
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| 30 | </ulink> |
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| 31 | are available. |
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| 32 | </para> |
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| 33 | |
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| 34 | <!-- ******* Bridgehead ******* --> |
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| 35 | <bridgehead renderas='sect4'> |
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| 36 | Origin and current situation of CLHEP |
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| 37 | </bridgehead> |
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| 38 | |
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| 39 | <para> |
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| 40 | CLHEP started in 1992 as a library for fundamental classes |
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| 41 | mostly needed for, and in fact derived from, the MC event generator |
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| 42 | MC++ written in C++. Since then various authors added classes to |
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| 43 | this package, including several contributions made by developers in |
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| 44 | the Geant4 Collaboration. |
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| 45 | </para> |
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| 46 | |
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| 47 | <!-- ******* Bridgehead ******* --> |
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| 48 | <bridgehead renderas='sect4'> |
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| 49 | Geant4 and CLHEP |
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| 50 | </bridgehead> |
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| 51 | |
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| 52 | <para> |
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| 53 | The Geant4 project contributed to the development of CLHEP. The |
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| 54 | random number package, physics units and constants, and some of the |
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| 55 | numeric and geometry classes had their origins in Geant4. |
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| 56 | </para> |
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| 57 | |
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| 58 | <para> |
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| 59 | Geant4 also benefits from the development of CLHEP. In addition |
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| 60 | to the already mentioned classes for random numbers and numerics, |
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| 61 | we use the classes for points, vectors, and planes and their |
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| 62 | transformations in 3D space, and lorentz vectors and their |
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| 63 | transformations. Although these classes have Geant4 names like |
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| 64 | G4ThreeVector, these are just typedefs to the CLHEP classes. |
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| 65 | </para> |
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| 66 | |
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| 67 | |
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| 68 | </sect1> |
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