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IAimmsMathProgramMatrixManipulationInfo::GetNextAddedColumns Method

Get added columns.

virtual _LONG_T GetNextAddedColumns(
    _LONG_T max_no, 
    _LONG_T col_no[], 
    double ub[], 
    double lb[], 
    _LONG_T type_flag[]
) = 0;
Parameters 
Description 
_LONG_T max_no 
Maximum number of columns to retrieve. 
_LONG_T col_no[] 
Array with the column numbers. Length must be at least max_no
double ub[] 
Array with the upper bounds of the columns. Length must be at least max_no
double lb[] 
Array with the lower bounds of the columns. Length must be at least max_no
_LONG_T type_flag[] 
Array of bit fields that specify column (modification) properties. Flags are taken from IAimmsMathProgramInfo::ColumnRowFlag enumeration. Length must be at least max_no

The GetNextAddedColumns method returns the actual number of columns retrieved.

The GetNextAddedColumns method is used to get columns from AIMMS that were added after a solve using GMP modifications. This method should only be called if the capability flag SolverCapability::CAPAB_MATRIX_MANIP has been set in the GetInitialInfo method.

  1. The number of added columns is equal to the value of parameter IntegerMathProgramInfo::IPARAM_MM_ADD_C, as passed to the DoSolve method.
  2. If max_no is greater than or equal to the number of added columns in the problem, you get all column data using a single call to this method.
  3. If max_no is smaller than the number of added columns then you request for a block-wise retrieval, and you must call GetNextAddedColumns repeatedly, until all added columns are retrieved.

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