CPXXinfointparam and CPXinfointparam

The routine CPXXinfointparam/CPXinfointparam obtains the default, minimum, and maximum values of a CPLEX parameter of type CPXINT.

int CPXXinfointparam( CPXCENVptr env, int whichparam, CPXINT * defvalue_p, CPXINT * minvalue_p, CPXINT * maxvalue_p )

int CPXinfointparam( CPXCENVptr env, int whichparam, CPXINT * defvalue_p, CPXINT * minvalue_p, CPXINT * maxvalue_p )

Description

The routine CPXXinfointparam/CPXinfointparam obtains the default, minimum, and maximum values of a CPLEX parameter of type CPXINT.

The CPLEX Parameters Reference Manual provides a list of parameters with their types, options, and default values.

Arguments

env: A pointer to the CPLEX environment as returned by CPXXopenCPLEX/CPXopenCPLEX.
whichparam: The symbolic constant (or reference number) of the parameter for which the value is to be obtained.
defvalue_p: A pointer to an integer variable to hold the default value of the CPLEX parameter. May be NULL.
minvalue_p: A pointer to an integer variable to hold the minimum value of the CPLEX parameter. May be NULL.
maxvalue_p: A pointer to an integer variable to hold the maximum value of the CPLEX parameter. May be NULL.

Return

The routine returns 0 (zero) if successful and nonzero if an error occurs.

Example


status = CPXinfointparam (env,  
                          CPXPARAM_Preprocessing_Presolve, 
                          &default_preind,
		          &min_preind, 
                          &max_preind);

Note:

The argument whichparam denotes a parameter of type CPX_PARAMTYPE_INT. For compatibility with previous versions of the product, this routine also accepts parameters of type CPX_PARAMTYPE_LONG. If the value returned in the argument defvalue_p, minvalue_p, or maxvalue_p for the parameter denoted by whichparam is of type CPX_PARAMTYPE_LONG and fits into a value of type CPXINT without truncation, then this routine succeeds. Otherwise, if any value returned in those informational arguments is larger than INT_MAX or smaller than INT_MIN, CPLEX replaces that value by INT_MAX or INT_MIN.