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3 | <!-- [History] --> |
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4 | <!-- Converted to DocBook: Katsuya Amako, Aug-2006 --> |
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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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