Last change
on this file since 714 was 577, checked in by cp3-support, 13 years ago |
upgrade HepMC to version 2.06.05
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File size:
1.4 KB
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1 | //--------------------------------------------------------------------------
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2 | // Units.cc
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3 | // Author: A. Buckley, D. Grellscheid
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4 | //
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5 | // units used by a GenEvent
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6 | // The default units are set here at compile time.
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7 | //--------------------------------------------------------------------------
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8 |
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9 | #include "Units.h"
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10 |
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11 | namespace HepMC {
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12 |
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13 | namespace Units {
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14 |
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15 | // helper functions
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16 | std::string name(MomentumUnit m) {
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17 | switch (m) {
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18 | case MEV : return "MEV";
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19 | case GEV : return "GEV";
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20 | default : return "badValue";
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21 | }
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22 | }
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23 |
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24 | std::string name(LengthUnit l) {
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25 | switch (l) {
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26 | case MM : return "MM";
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27 | case CM : return "CM";
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28 | default : return "badValue";
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29 | }
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30 | }
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31 |
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32 | double conversion_factor(MomentumUnit from, MomentumUnit to)
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33 | {
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34 | if ( from == to )
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35 | return 1.0;
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36 | else if ( from == MEV && to == GEV )
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37 | return 0.001;
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38 | else
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39 | return 1000.0;
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40 | }
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41 |
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42 | double conversion_factor(LengthUnit from, LengthUnit to)
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43 | {
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44 | if ( from == to )
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45 | return 1.0;
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46 | else if ( from == MM && to == CM )
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47 | return 0.1;
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48 | else
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49 | return 10.0;
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50 | }
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51 |
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52 | // if this function fails to compile, rerun configure using --with-length_units
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53 | LengthUnit default_length_unit() {
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54 | return MM ;
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55 | }
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56 |
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57 | // if this function fails to compile, rerun configure using --with-momentum_units
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58 | MomentumUnit default_momentum_unit() {
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59 | return GEV ;
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60 | }
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61 |
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62 | } // Units
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63 |
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64 | } // HepMC
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