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The routine CPXgetparamname returns the name of a CPLEX
 parameter, given the symbolic constant (or reference number) for it.
The reference manual ILOG CPLEX Parameters provides a list of parameters with their types, options, and default values.
Example
status = CPXgetparamname (env, CPX_PARAM_ADVIND, param_string);
| env | A pointer to the CPLEX environment as returned by   | 
| whichparam | An integer indicating the symbolic constant (or reference number) of the desired parameter.  | 
| name_str | A character array to receive the name of the selected parameter.  |