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Symbolic constants
MAD recognises a few build-in built-in
mathematical and physical constants.
Their names must not be used for user-defined labels.
Additional symbolic constants may be defined to
simplify their repeated use in statements and expressions.
Table 2.7:
Predefined Symbolic Constants
| MAD name |
Mathematical symbol |
Value |
Unit |
| PI |
 |
3.1415926535898 |
1 |
| TWOPI |
 |
6.2831853071796 |
1 |
| DEGRAD |
 |
57.295779513082 |
deg/rad |
| RADDEG |
 |
.017453292519943 |
rad/deg |
| E |
 |
2.7182818284590 |
1 |
| EMASS |
 |
.51099906e-3 |
GeV |
| PMASS |
 |
.93827231 |
GeV |
| CLIGHT |
 |
299792458 |
m/s |
MAD User Guide, http://wwwslap.cern.ch/mad/